[Federal Register Volume 90, Number 119 (Tuesday, June 24, 2025)]
[Notices]
[Pages 26865-26891]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-11525]



[[Page 26865]]

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SECURITIES AND EXCHANGE COMMISSION

[Release No. 34-103290; File No. SR-IEX-2025-02)]


Self-Regulatory Organizations; Investors Exchange LLC; Notice of 
Filing of Amendment No. 3 to a Proposed Rule Change To Adopt Rules To 
Govern the Trading of Options on the Exchange for a New Facility Called 
IEX Options

June 18, 2025.
    On January 10, 2025, the Investors Exchange LLC (``IEX'' or 
``Exchange'') filed with the Securities and Exchange Commission 
(``Commission''), pursuant to Section 19(b)(1) of the Securities 
Exchange Act of 1934 (``Act'') \1\ and Rule 19b-4 thereunder,\2\ a 
proposed rule change to adopt rules to govern the trading of options on 
IEX Options LLC, a facility of the Exchange that will be established in 
a separate rule filing. The proposed rule change was published for 
comment in the Federal Register on January 21, 2025.\3\ On March 6, 
2025, the Commission designated a longer period within which to take 
action on the proposed rule change.\4\ On March 12, 2025, the Exchange 
filed Amendment No. 1 to the proposed rule change,\5\ and Amendment No. 
1 was published for comment in the Federal Register on March 19, 
2025.\6\ On April 21, 2025, the Commission instituted proceedings to 
determine whether to approve or disapprove the proposed rule change 
(``OIP'').\7\ On June 13, 2025, the Exchange filed Amendment No. 2 to 
the proposed rule change, which it withdrew to correct a nonsubstantive 
pagination issue and refiled as Amendment No. 3 on June 17, 2025.\8\ 
The Commission has received comments on the proposed rule change.\9\ 
The Commission is publishing this notice to solicit comments on the 
proposed rule change, as amended by Amendment No. 3, from interested 
persons. Items I and II below have been prepared by the Exchange.
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    \1\ 15 U.S.C. 78s(b)(1).
    \2\ 17 CFR 240.19b-4.
    \3\ See Securities Exchange Act Release No. 102190 (Jan. 14, 
2025), 90 FR 7205.
    \4\ See Securities Exchange Act Release No. 102536, 90 FR 11866 
(Mar. 12, 2025). The Commission designated April 21, 2025 as the 
date by which it should approve, disapprove, or institute 
proceedings to determine whether to disapprove the proposed rule 
change. See id.
    \5\ Amendment No. 1 is publicly available on the Commission's 
website at: https://www.sec.gov/comments/sr-iex-2025-02/sriex202502-580115-1667463.pdf.
    \6\ See Securities Exchange Act Release No. 102663 (Mar. 13, 
2025), 90 FR 12890.
    \7\ See Securities Exchange Act Release No. 102895, 90 FR 17474 
(April 25, 2025).
    \8\ Amendment No. 3 is publicly available on the Commission's 
website at https://www.sec.gov/comments/sr-iex-2025-02/sriex202502.htm. See infra notes 17-19 and accompanying text for a 
further explanation of the proposed revisions to the proposed rule 
change set forth in Amendment No. 3.
    \9\ Comments on the proposed rule change are available at 
https://www.sec.gov/comments/sr-iex-2025-02/sriex202502.htm.
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I. Self-Regulatory Organization's Statement of the Terms of Substance 
of the Proposed Rule Change

    On January 10, 2025, IEX, pursuant to the provisions of Section 
19(b)(1) under the Act \10\ and Rule 19b-4 thereunder,\11\ filed with 
the Commission proposed rule change SR-IEX-2025-02 (the ``Initial 
Proposal'').\12\ As described in the Initial Proposal, IEX is proposing 
to adopt rules to govern the trading of options on IEX Options LLC, a 
facility of the Exchange that will be established in a separate rule 
filing (referred to herein as ``IEX Options''). On March 12, 2025, the 
Exchange filed with the SEC Amendment No. 1, which replaced and 
superseded the Initial Proposal in its entirety in order to provide 
increased clarity and modify certain aspects of the Initial Proposal as 
described therein (``Amendment No. 1 Proposal''). The Exchange is 
filing this Amendment No. 3 to provide increased clarity and modify 
certain aspects of the Amendment No. 1 Proposal as described herein. 
Amendment No. 3 replaces and supersedes Amendment No. 1 in its 
entirety. The Exchange previously filed Amendment No. 2 but withdrew it 
to correct a nonsubstantive pagination issue.
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    \10\ 15 U.S.C. 78s(b)(1).
    \11\ 17 CFR 240.19b-4.
    \12\ See Securities Exchange Act Release No. 102190 (January 14, 
2025), 90 FR 7205 (January 21, 2025) (``Initial Filing''), available 
at https://www.iexexchange.io/resources/regulation/rule-filings.
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    As proposed, the Exchange will operate IEX Options as a fully 
automated trading system built on the core functionality of the 
Exchange's approved equities platform, and in a manner similar to that 
of other options exchanges. In addition, IEX Options will utilize a de 
minimis delay on incoming order and quote messages designed to enable 
IEX to obtain the most accurate view of the market prior to processing 
orders and quotes, and an optional Market Maker quote parameter 
designed to protect IEX Market Makers from excessive risk due to 
execution of quotes at stale prices (i.e., before the market maker can 
update them in response to changed market data) that can be exploited 
by latency arbitrage strategies (as described below), in addition to 
other risk protections substantially similar to those offered by other 
options exchanges.
    The text of the proposed rule change is available at the Exchange's 
website at https://www.iexexchange.io/resources/regulation/rule-filings 
and at the principal office of the Exchange.

II. Self-Regulatory Organization's Statement of the Purpose of, and the 
Statutory Basis for, the Proposed Rule Change

    In its filing with the Commission, the self-regulatory organization 
included statements concerning the purpose of and basis for the 
proposed rule change and discussed any comments it received on the 
proposed rule change. The text of these statements may be examined at 
the places specified in Item IV below. The self-regulatory organization 
has prepared summaries, set forth in Sections A, B, and C below, of the 
most significant aspects of such statements.

A. Self-Regulatory Organization's Statement of the Purpose of, and 
Statutory Basis for, the Proposed Rule Change

1. Purpose
Overview
    The Commission published the proposed rule change for comment in 
the Federal Register on January 21, 2025,\13\ and on March 6, 2025, 
extended the review period to April 21, 2025.\14\ The Commission 
published Amendment No. 1 for comment in the Federal Register on March 
19, 2025.\15\ On April 21, 2025 the Commission instituted proceedings 
to determine whether to approve or disapprove the proposed rule change, 
as modified by Amendment No. 1 (``OIP'').\16\
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    \13\ Id.
    \14\ See Securities Exchange Act Release No. 102536 (March 6, 
2025), 90 FR 11866 (March 12, 2025).
    \15\ See Securities Exchange Act Release No. 102663 (March 13, 
2025), 90 FR 12890 (March 19, 2025).
    \16\ See Securities Exchange Act Release No. 102895 (April 21, 
2025); 90 FR 17474 (April 25, 2025).
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    The Exchange is filing Amendment No. 3 to the Amendment No. 1 
Proposal in order to provide increased clarity and modify certain 
aspects of Amendment No. 1, including to address the issues raised by 
the Commission in the OIP.
    First, IEX proposes to revise the Options Risk Parameter (``ORP'') 
Indicator \17\ formula specified in Supplementary Material .04 (Quote 
instability calculation) and Supplementary Material .05 (Calculation of 
implied volatility) to

[[Page 26866]]

proposed Rule 23.150 to more narrowly tailor the parameters of the 
calculation and provide greater clarity with respect to the variable 
values included therein. Specifically, IEX proposes to revise proposed 
Supplementary Material .04(1)(q) and (2)(e), and Supplementary Material 
.05 to codify the initial value for each of three variables used in the 
application of the ORP: (1) Delta Bound Band; (2) Quote Instability 
Threshold; and (3) the frequency of the calculation of implied 
volatility, respectively, and provide that, if the Exchange determines 
to change any of the codified values within the specified ranges or 
values, as applicable, it will do so by submitting a rule filing 
pursuant to Rule 19b-4(f)(1) under the Exchange Act or other 
appropriate rule filing type.
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    \17\ See proposed Rule 23.150(h)(1).
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    Second, the Exchange provides data analysis estimating that the ORP 
would only have a de minimis impact on market maker quotes on IEX thus 
evidencing that its benefit is designed to be narrowly tailored to 
protect against latency arbitrage strategies. As described herein, IEX 
expects that for significantly more than 99% of the trading day the ORP 
would not impact a quote on IEX.
    Third, IEX provides clarifications and additional support for 
certain aspects of its proposed rule change as described herein.
    Fourth, IEX proposes to revise proposed Rule 19.160 concerning when 
accounts should be aggregated when determining position limits, 
substantially similar to provisions in CBOE's rules.\18\
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    \18\ Specifically, IEX proposes to adopt language from CBOE Rule 
8.30 Interpretation and Policy .03(c)(4) in new subsection (f)(2)(D) 
to proposed Rule 19.160 and from CBOE Rule 8.30 Interpretation and 
Policy .09 in new Supplementary Material .03 to proposed Rule 
19.160.
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    Finally, IEX makes several non-substantive terminology revisions to 
enhance clarity.\19\
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    \19\ Specifically, in this Amendment No. 3 references to Cboe 
Exchange, Inc. are to CBOE rather than C1, and the Options trading 
system is referred to as the ``System'' rather than the ``Trading 
System.''
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    The Exchange proposes to adopt a series of rules in connection with 
IEX Options, which will be a facility of the Exchange.\20\ As proposed, 
the Exchange will operate IEX Options as a fully automated trading 
system built on the core functionality of the Exchange's approved 
equities platform, and in a manner similar to that of other options 
exchanges.\21\
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    \20\ IEX will file a separate proposed rule change with the 
Commission pursuant to Section 19 of the Act to provide that IEX 
Options will be operated by IEX Options LLC, a Delaware limited 
liability company wholly owned by the Exchange, as a facility of the 
Exchange as that term is defined in Section 3(a)(2) of the Act.
    \21\ The IEX Options proposed rules are largely based on the 
rules of other options exchanges, as described herein. When a 
particular proposed rule is described as ``substantively identical'' 
to a rule(s) of another exchanges that means that the substance of 
the proposed IEX Options rule is identical to the referenced rule of 
the other exchange, with differences only to reflect terminology and 
numbering. When a particular proposed rule is described as 
``substantially similar'' to a rule(s) of another exchange this rule 
filing describes the relevant differences.
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    As proposed, IEX Options will operate an electronic trading system 
to list and trade options issued by the Options Clearing Corporation 
(``Clearing Corporation'' or ``OCC''). Specifically, IEX proposes to 
operate a fully automated, pro-rata priority options market in a manner 
similar to that of other options exchanges. In addition, IEX Options 
will utilize a de minimis delay on incoming order and quote messages 
designed to enable IEX to obtain the most accurate view of the market 
prior to processing orders and quotes, and an optional Market Maker 
quote parameter designed to protect Market Makers from excessive risk 
due to execution of quotes at stale prices, in addition to other risk 
protections substantially similar to those offered by other options 
exchanges.
    The Exchange proposes to adopt rules applicable to IEX Options that 
are substantially similar to the approved rules of the MEMX, CBOE, 
MIAX, and NYSE Amex and Arca options exchanges, with the material 
proposed differences described herein.\22\
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    \22\ See rulebooks of MEMX LLC (``MEMX''), Cboe Exchange, Inc. 
(``CBOE''), Miami International Securities Exchange, LLC (``MIAX''), 
NYSE Arca, Inc. (``NYSE Arca Options''), and NYSE American LLC 
(``NYSE Amex Options''). However, IEX is not proposing to trade 
index options at this time and therefore is not proposing rules for 
the listing and trading of index options.
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    As provided in proposed Rule 17.110 (Applicability), existing 
Exchange Rules \23\ applicable to the IEX equities market contained in 
Chapters 1 through 16 of the Exchange Rules will apply to Options 
Members unless a specific Exchange Rule applicable to the IEX Options 
market (in proposed Chapters 17 through 29 of the Exchange Rules) 
governs or unless the context otherwise requires.
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    \23\ See IEX Rule 1.160(jj).
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    The IEX Options System \24\ will provide for the electronic display 
and execution of orders on a pro-rata basis. All Exchange Members will 
be eligible to participate in IEX Options by qualifying as Options 
Members \25\ and obtaining one or more trading permits for their 
activity on IEX Options, in accordance with applicable IEX Options 
rules. The IEX Options System will provide an optional routing service 
for orders when trading interest is not present on IEX Options and will 
comply with all applicable securities laws and regulations and the 
obligations of the Options Order Protection and Locked/Crossed Market 
Plan.
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    \24\ See proposed Rule 22.100(a).
    \25\ See proposed Rule 17.100.
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Background

    IEX began operation as a national securities exchange in 2016, 
introducing an innovative market design that includes a 350-microsecond 
speed bump and an indicator.\26\ These features were designed to 
protect resting liquidity generally, as well as to increase displayed 
liquidity, which enhances price discovery and the quality of markets 
overall. These innovations have been successful in counteracting the 
ability of market participants to exploit speed-based advantages when 
the market is in transition.
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    \26\ See infra notes 206 and 208 and accompanying text.
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    Latency arbitrage is a high-speed trading strategy that exploits 
microsecond resolution differences in market data dissemination and 
trade reaction times. In essence, it involves detecting price changes 
(or inconsistencies) in one market and racing to trade on another 
market before those prices fully update. Typical latency arbitrageurs 
trade with their own capital and invest heavily in highly sophisticated 
technology and connectivity to facilitate said strategies. They 
leverage these technological and speed advantages to execute rapidly 
against passive resting orders and quotes at outdated ``stale'' prices, 
microseconds before a liquidity provider has had a fair opportunity to 
modify or cancel (or is in the process of modifying or cancelling) its 
orders to reflect updated market conditions. Given the exponential 
growth in options tradeable instruments (over 1.5 million individual 
series) and the quote-driven nature of options markets, market makers 
are uniquely susceptible to such strategies. This essentially 
represents a risk-free profit for the taker whose true cost flows to 
all participants as market makers price such activity into their quoted 
spreads. This results in artificially wide markets that reduce trading 
opportunities to the detriment of all market participants.\27\
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    \27\ As the Commission has explained, latency arbitrage occurs 
in the securities markets ``[i]n those rare moments when market 
prices are in transition, a race condition exists between liquidity 
providers who want to reprice their on-exchange displayed liquidity 
to reflect the changing market prices and the liquidity takers who 
want to take before those updates can occur.'' See Securities 
Exchange Act Release No. 89686 (August 26, 2020), 85 FR 54438, at 
54442 (September 1, 2020) (SR-IEX-2019-15) (``2020 SEC Approval 
Order''). Those liquidity providers who cannot react as fast to 
changing market conditions are subject to adverse selection of 
executions at stale prices. See id.; see also Citadel Securities LLC 
v. Securities and Exchange Commission, 45 F.4th 27, 31 (D.C. Cir. 
2022) (explaining that exchanges experience latency whereby certain 
high-frequency traders can take securities at old-stale prices just 
before updated prices reach the exchange).

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    Since Commission approval as an exchange, and more recently of its 
D-Limit order type, IEX has grown in quote presence and market share as 
market participants increasingly choose to trade on its exchange, drawn 
by its innovative technology designed to protect all participants, 
including liquidity providers, from latency arbitrage. Comparing the 
third quarter of 2020 to the second quarter of 2025, IEX has 
experienced a dramatic increase in the time and size in which quotes 
entered on IEX are displayed on both sides of the NBBO (time increased 
from 1.1% to 27.9% while size increased from 0.6% to 11.6%), as well as 
a significant increase in traded volume and market share. IEX believes 
that these increases evidence that market participants value its 
protective innovations. Further, markouts for resting D-Limit orders on 
IEX, which measure the magnitude and direction of price moves after a 
trade, are substantially better when compared to other exchanges with 
at least 1% market share, evidencing D-Limit's narrowly tailored 
protection from latency arbitrage ($0.0017 per share compared to -
$0.0030 per share).\28\ And fill rates for orders attempting to trade 
with displayed orders on IEX have remained consistent.
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    \28\ Markouts are measured by comparing the trade price to the 
midpoint of the NBBO one second after the trade, expressed in mils/
share, excluding any fees/rebates. (Source: NYSE Trade and Quote 
data and IEX market data.)
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    In today's options marketplace, liquidity is primarily derived from 
market maker quotes and there are vastly more securities listed and 
traded than on equities exchanges; more than 1.5 million options series 
compared to approximately 10,000 National Market System (``NMS'') 
securities. Because of the large number of options series, there are 
less likely to be investor limit orders resting displayed on an 
exchange in any one series at any given time, so prices are commonly 
set by registered market makers' quotes. Thus, the need for such 
protections is paramount to maintaining and increasing liquidity 
available in the marketplace. Options market makers, even more so than 
equities market makers, are left highly vulnerable, particularly given 
the number of securities they are quoting, to latency arbitrage which 
has an impact on their quoting activity in each security.
    IEX believes that implementing the proposed protective measures 
would enhance the fairness and orderliness of the market, support the 
integrity of the public price discovery process, and mitigate 
competitive imbalances consistent with Exchange Act goals.\29\ The 
measures are designed to improve the execution quality experience of 
market participants that are affected by adverse selection and this 
improved execution quality could encourage more displayed liquidity and 
contribute to tighter spreads.\30\ IEX further believes that the 
innovations, that have been proven to increase displayed liquidity in 
the equity markets, would be equally, if not more beneficial to the 
options market given the market structure described above.
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    \29\ See infra note 163 discussing structural challenges facing 
market makers.
    \30\ See, e.g., Citadel Securities, Market Lens, July 2020 
(``Market Lens'') (explaining that ``a wide array of market 
participants seek to lower their risk of inopportune executions by 
constantly updating their orders to reflect changing market 
conditions'' and this can lead to higher quote cancellation rates 
and frequent quote updates to reflect accurate prices), available at 
https://www.citadel.com/securities/wp-content/uploads/sites/2/2020/07/Market-Lens-Order-Cancellation-White-Paper_FINAL.pdf).
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    Various tools provided by all options exchanges are designed to 
enable market makers to manage risks, including those presented by 
latency arbitrage, and to enhance quote accuracy on their markets (as 
described below). In IEX's continuing efforts to find innovative 
solutions to assist liquidity providers in managing risk, IEX seeks to 
extend its proven, innovative technology to further assist options 
market makers in managing such risks and thereby promote fairer markets 
and mitigate speed-based advantages on its platform. This business 
choice in exchange offerings supports the fostering of technological 
innovation and dynamic competition in the options markets, as 
envisioned by the Exchange Act.

IEX Options Members

    Pursuant to the proposed rules in Chapter 18 (Participation on IEX 
Options), the Exchange will authorize any Exchange Member that meets 
certain enumerated qualification requirements (any such Member, an 
``Options Member'') and any Options Member's Sponsored Participants to 
obtain access to, and transact business on, IEX Options.\31\
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    \31\ See proposed Rules 18.100, 18.110, 18.120, and 18.130.
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    There will be three types of Options Members--Options Order Entry 
Firms (``OEFs''), Options Market Makers, and Options Clearing Members. 
Options Members may act in one, two, or all such capacities. OEFs will 
be those Options Members representing Customer Orders as agent on IEX 
Options or trading as principal on IEX Options. Options Market Makers, 
in turn, will be eligible to participate as Registered Market Makers or 
Specialists, as set forth in Rule 23.100. Additionally, all Options 
Market Makers may participate as Directed Marker Makers.\32\ Clearing 
Members will be those Options Members that have been admitted to 
membership in the Clearing Corporation pursuant to the provisions of 
the Rules of the Clearing Corporation and are self-clearing or that 
clear IEX Options Transactions for other Options Members.
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    \32\ Directed Market Makers would be subject to enhanced quoting 
obligations (as compared to Registered Market Markers) as set forth 
in proposed Rule 23.150(e)(3), which is substantively identical to 
NYSE Amex Options Rule 964.1NYP.
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    IEX proposes to issue different types of Trading Permits to Options 
Members that allow the Trading Permit Holders to: (i) trade one or more 
products authorized for trading on the Exchange; (ii) act in one or 
more trading functions authorized by the Rules of IEX Options; and/or 
(iii) act as a Clearing Member.\33\ Trading Permits shall be for the 
types and terms as shall be determined by the Exchange from time to 
time, and subject to effectiveness of one or more rule filings pursuant 
to Section 19(b) of the Act. The proposed rule governing IEX's Trading 
Permits, Rule 18.140, is based on CBOE Rule 3.1.\34\
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    \33\ See proposed Rule 18.140.
    \34\ On CBOE, part of the process of applying to be a Trading 
Permit Holder is for a broker-dealer to qualify as a participant or 
member of the exchange. IEX's proposed rule therefore differs from 
CBOE Rule 3.1 because it does not include the membership 
qualification-related provisions that are addressed elsewhere in 
IEX's proposed Chapter 18. In particular, IEX is not proposing to 
incorporate CBOE Rule 3.1(a)(3)'s language regarding jurisdiction 
over Trading Permit Holders because it is covered by Rule 2.120 
(requiring all IEX Members to consent to the Exchange's 
jurisdiction) and proposed Rule 18.140(e) (applying the Exchange's 
jurisdictional authority to all Options Members). In addition, 
CBOE's rule includes limitations on the number of trading permits 
the exchange may issue. IEX is not proposing such limitations.
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    The rules governing Registered Market Makers and Specialists are 
substantially based on MIAX and CBOE rules.\35\ To become an Options 
Market

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Maker, an Options Member will be required to register by filing a 
written application and obtain any required trading permits.\36\ The 
Exchange will not place any limit on the number of entities that may 
become Options Market Makers, the number of appointments an Options 
Market Maker may have, or the number of Options Market Makers that may 
have appointments in a class unless the Exchange determines to impose 
any such limit based on system constraints, capacity restrictions, or 
other factors relevant to protecting the integrity of the System. The 
Exchange will not impose any such limitations until it has submitted 
objective standards for imposing the limits to the Commission for its 
review and approval.\37\
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    \35\ See MIAX Rules 600-609 (regarding market maker 
qualifications and obligations) and MIAX Rules 514(d), (e), and (g) 
(regarding market maker quoting and priority). The primary 
differences between these MIAX rules and IEX's proposed Market Maker 
rules are: (1) MIAX has three tiers of market makers, while IEX 
proposes to have two tiers; (2) MIAX puts Market Makers at a 
priority level above other non-Priority Customer interest, while IEX 
will not (IEX's proposed rules are substantively identical to the 
priority rules in CBOE Rule 5.32 as it pertains to CBOE's Preferred 
Market Makers); (3) IEX proposes to allocate participation 
entitlements for Specialists with a priority quote based on the 
amount of non-Priority customer interest (which is how CBOE Rule 
5.32(a)(2)(B) allocates priority overlays), while MIAX only looks at 
the amount of other market marker interest; and (4) MIAX offers a 
Market Turner priority overlay which IEX is not proposing to adopt.
    \36\ See proposed Rules 23.100 and 18.140.
    \37\ This provision is substantively identical to MEMX Rule 
22.2(c) and MIAX Rule 600(d).
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    As proposed, the Exchange shall appoint Registered Market Makers to 
one or more classes of options contracts traded on the Exchange. In 
making such appointments the Exchange shall consider the financial 
resources available to the Registered Market Maker, the Registered 
Market Maker's experience and expertise in market making or options 
trading, the preferences of the Registered Market Maker to receive 
appointments in specific options classes, and the maintenance and 
enhancement of competition among Registered Market Makers in each class 
of options contracts to which they are appointed.\38\
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    \38\ See proposed Rule 23.120(a)(1).
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    While there may be several Registered Market Makers appointed to a 
particular class of options contracts, the Exchange may appoint only 
one Specialist to each options class traded on the Exchange.\39\ To be 
appointed as a Specialist, an Options Member must first satisfy the 
criteria for appointment as a Registered Market Maker set forth in Rule 
23.120(a)(1) and then must participate in the Specialist Qualification 
Process conducted by the Exchange and detailed in proposed Rule 
23.130(b).\40\ Factors to be considered for selection as a Specialist 
include, but are not limited to, representations regarding capital 
operations, personnel or technical resources.\41\ After designating 
certain Market Makers as Specialists, the Exchange will conduct a 
process to determine which options classes to allocate to which 
Specialist, based upon which candidate appears best able to perform the 
functions of a Specialist in the designated options classes. Factors to 
be considered in the allocation of options classes to Specialists by 
the Exchange include, but are not limited to the following: experience 
with trading the options issue; adequacy of capital; willingness to 
promote the Exchange as a marketplace; operational capacity; support 
personnel; history of adherence to Exchange rules and securities laws; 
and evaluations made pursuant to proposed Rule 23.130(f).\42\ The 
Exchange will also consider the number and quality of issues that have 
been allocated, reallocated or transferred to a Specialist and the 
Specialist's willingness to promote the Exchange as a marketplace.\43\
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    \39\ See proposed Rule 23.130(g)(1)(A), which is substantively 
identical to NYSE Amex Options Rule 923NY(b). The language providing 
that the Exchange ``may'' appoint only one Specialist to each 
options class is based upon and substantively identical to NYSE Amex 
Options Rule 923NY(b).
    \40\ IEX based the proposed Specialist rule (23.130) on NYSE 
Amex Options Rules 927NY, 927.1NY, and 927.2NY because these rules 
provide clear instructions to prospective Specialist candidates 
about the manner in which the Exchange selects and evaluates 
Specialists, and detailed rules about Specialist rights and 
obligations.
    \41\ See proposed Rule 23.130(b)(1). This rule is substantively 
identical to NYSE Amex Options Rule 927NY, with the exception that 
IEX is not proposing to obligate Specialists to make FLEX quotes, 
because those are not offered by the Exchange.
    \42\ See proposed Rule 23.130(g). This rule is substantively 
identical to NYSE Amex Options Rule 927.2NY.
    \43\ Id.
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    The Exchange will also evaluate the performance of Specialists, and 
upon a finding that a Specialist failed to meet minimum performance 
standards, may take adverse action against the Specialist; Specialists 
shall have the right to appeal any adverse actions against them 
pursuant to IEX Rule Series 9.500, which governs adverse actions.\44\
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    \44\ See proposed Rule 23.130(b)(2), and (f). These rules are 
substantively identical to NYSE Amex Options Rules 927NY(b)(2) and 
927.1NY, respectively.
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    Quotations may only be entered by a Market Maker and only in 
classes of options contracts to which the Market Maker is 
appointed.\45\ Market Makers may also submit orders in classes of 
options contracts to which the Market Maker is appointed, which shall 
constitute a quote, and thus would help to satisfy the Market Maker's 
quoting obligation.\46\ In addition, an Options Market Maker with an 
OEF trading permit may submit orders in classes of options in which the 
Market Maker has no appointment, provided that the total number of such 
orders executed by the Market Maker do not exceed 25% of all contracts 
the Market Maker executes on the Exchange in any calendar quarter.\47\
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    \45\ See proposed Rule 23.150(a).
    \46\ See proposed Rule 17.100 (defining ``Quote'' to include 
orders entered by a Market Maker in the option series to which such 
Market Maker is registered).
    \47\ See proposed Rule 23.150(g).
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    Options Market Makers will be required to electronically engage in 
a course of dealing reasonably calculated to contribute to the 
maintenance of fair and orderly markets.\48\ IEX does not propose to 
incorporate MIAX's requirement that Market Makers refrain from 
purchasing an option at a price more than $0.25 below parity,\49\ 
because IEX does not believe the restriction is necessary to the 
maintenance of fair and orderly markets requirement, and notes that 
other exchanges do not include this restriction.\50\ Market Makers will 
be required to maintain a two-sided market on a continuous basis \51\ 
in at least 60% of the non-adjusted options series to which they are 
appointed as Registered Market Makers and at least 90% of the non-
adjusted options series to which they are appointed as Specialists, 
provided the options classes have a time to expiration of less than 
nine months.\52\ And, as noted above, Directed Market Makers are 
subject to enhanced quoting obligations compared to Registered Market 
Makers.\53\ Market Makers and Specialists may use quotes and orders to 
meet the applicable quoting requirements. These obligations will not 
apply to an intra-day add-on series on the day during which such series 
was added for trading. Market Maker quotes must be firm quotes that 
comply with enumerated price and size rules.\54\ These obligations also 
will not apply when an Options series is halted because the underlying 
security has entered a Limit or Straddle state.\55\

[[Page 26869]]

Registered Market Makers and Specialists also must maintain minimum net 
capital in accordance with Commission and Exchange rules.\56\ 
Substantial or continued failure by an Options Market Maker to meet any 
of its obligations and duties will subject the Options Market Maker to 
disciplinary action, suspension, or revocation of the Market Maker's 
registration as such or its appointment in one or more of its appointed 
options classes.\57\
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    \48\ See proposed Rule 23.140(a).
    \49\ See MIAX rule 603(a).
    \50\ See, e.g., NYSE Arca Options Rule 6.37-O.
    \51\ ``Continuous quoting'' is defined as 90% of the time. See 
proposed Rule 23.150(e).
    \52\ See proposed Rule 23.150(e)(2) and (e)(1). Proposed Rule 
23.150(e)(1) is based upon and substantively identical to NYSE Amex 
Options Rule 925.1NYP(b) and proposed Rule 23.150(e)(2) is based 
upon and substantively identical to NYSE Amex Options Rule 
925.1NYP(c).
    \53\ See supra note 29.
    \54\ See proposed Rule 23.150(b) and (d).
    \55\ See Supplementary Material .01 to proposed Rule 23.150(h), 
which is substantively identical to MIAX Rule 530(f)(1).
    \56\ See proposed Rule 23.180 ($200,000 net capital requirement 
for Registered Market Makers), which is substantively identical to 
MEMX Rule 22.9 and proposed Rule 23.130(c)(1)(H) ($1,000,000 net 
capital requirement for Specialists), which is substantively 
identical to Amex Options Rule 927NY(c)(10).
    \57\ See proposed Rule 23.120(f). NYSE Amex Options Rule 
927.1NY(1)(B) specifies that NYSE Amex Options provides its 
specialists information related to their market share in allocated 
issues on a monthly basis as part of the evaluation process. IEX is 
not proposing to include this provision because it understands that 
Specialist firms are well-equipped to monitor their market share and 
performance on IEX and other markets.
---------------------------------------------------------------------------

    As on other exchanges, Options Market Makers receive certain 
benefits for carrying out their duties. For example, a lender may 
extend credit to a broker-dealer without regard to the restrictions in 
Regulation T of the Board of Governors of the Federal Reserve System if 
the credit is to be used to finance the broker-dealer's activities as a 
specialist or market maker on a national securities exchange. Thus, an 
Options Market Maker has a corresponding obligation to hold itself out 
as willing to buy and sell options for its own account on a regular or 
continuous basis to justify this favorable treatment.
    Every Options Member shall at all times maintain membership in 
another registered options exchange that is not registered solely under 
Section 6(g) of the Exchange Act or in the Financial Industry 
Regulatory Association (``FINRA'').\58\ OEFs and other Options Members 
that transact business with Public Customers must at all times be 
members of FINRA. Pursuant to proposed Rule 18.110(h), every Options 
Member will be required to have at least one registered Options 
Principal who satisfies the criteria of that rule, including the 
satisfaction of a proper qualification examination. An OEF may only 
transact business with Public Customers if such Options Member also is 
an Options Member of another registered national securities exchange or 
association with which the Exchange has entered into an agreement under 
Rule 17d-2 under the Exchange Act \59\ pursuant to which such other 
exchange or association shall be the designated options examining 
authority for the OEF.\60\
---------------------------------------------------------------------------

    \58\ See proposed Rule 18.110(g).
    \59\ 17 CFR 240.17d-2.
    \60\ See proposed Rule 27.100.
---------------------------------------------------------------------------

    The proposed rules relating to qualification and participation on 
IEX Options as an Options Member (including as an OEF, Options Market 
Maker, or Clearing Member) are substantively identical to the relevant 
rules of MEMX Options.\61\
---------------------------------------------------------------------------

    \61\ See MEMX Rulebook Chapters 17 and 22.
---------------------------------------------------------------------------

    As provided in proposed Rule 17.110, existing Exchange Rules 
applicable to the IEX equities market contained in Chapters 1 through 
16 of the Exchange Rules will apply to Options Members unless a 
specific Exchange Rule applicable to the IEX Options market (proposed 
Chapters 17 through 29 of the Exchange Rules) governs or unless the 
context otherwise requires. Options Members can therefore provide 
sponsored access to the IEX Options Exchange to a non-Member (i.e., a 
Sponsored Participant) pursuant to Rule 11.130 of the Exchange Rules.
Definitions
    The Exchange proposes to define a series of terms under proposed 
Rule 17.100 (Definitions), which are to be used in proposed Chapters 17 
to 29 relating to the trading of options contracts on the Exchange. 
Unless otherwise indicated, all of the terms defined in proposed Rule 
17.100 are either identical or substantially similar to definitions 
included in MEMX Rule 16.1. Any modifications to the MEMX definitions, 
or definitions based upon the rules of other exchanges are specifically 
indicated below.
    The definitions under proposed Rule 17.100 are as follows:
     ABBO. The term ``ABBO'' or ``Away Best Bid or Offer'' 
means the best bid(s) or offer(s) disseminated by other Eligible 
Exchanges (as defined in Rule 28.100) and calculated by the Exchange 
based on market information the Exchange receives from OPRA.\62\
---------------------------------------------------------------------------

    \62\ IEX notes that this definition differs from the MEMX 
definition of ABBO by spelling out the phrase ``Away Best Bid or 
Offer'' that ABBO refers to for added clarity.
---------------------------------------------------------------------------

     Aggregate Exercise Price. The term ``Aggregate Exercise 
Price'' means the exercise price of an options contract multiplied by 
the number of units of the underlying security covered by the options 
contract.
     American-Style Option. The term ``American-Style'' option 
means an options contract that, subject to the provisions of Rule 
24.100 (relating to the cutoff time for exercise instructions) and to 
the Rules of the Clearing Corporation, may be exercised at any time 
from its commencement time until its expiration.
     Associated Person and Person Associated with an Options 
Member. The terms ``associated person'' and ``person associated with an 
Options Member'' mean any partner, officer, director, or branch manager 
of an Options Member (or any person occupying a similar status or 
performing similar functions), any person directly or indirectly 
controlling, controlled by, or under common control with an Options 
Member or any employee of an Options Member, except that any person 
associated with an Options Member whose functions are solely clerical 
or ministerial shall not be included in the meaning of such term for 
purposes of these Rules.
     Bid. The term ``bid'' means a Limit order to buy one or 
more options contracts.
     Board. The term ``Board'' means the Board of Directors of 
Investors' Exchange LLC.
     Call. The term ``call'' means an options contract under 
which the holder of the option has the right, in accordance with the 
terms of the option, to purchase from the Clearing Corporation the 
number of shares of the underlying security covered by the options 
contract.
     Capacity. The term ``capacity'' means the capacity in 
which a User submits an order, which the User specifies by applying the 
corresponding code to the order. The capacity codes available on IEX 
Options will be listed in publicly available specifications and 
published in a Regulatory Circular.
     Class of Options. The terms ``class'' or ``class of 
options'' mean all options contracts with the same unit of trading 
covering the same underlying security.
     Clearing Corporation and OCC. The terms ``Clearing 
Corporation'' and ``OCC'' mean The Options Clearing Corporation.
     Clearing Member. The term ``Clearing Member'' means an 
Options Member that is self-clearing or an Options Member that clears 
IEX Options Transactions for other Options Members.
     Closing Purchase Transaction. The term ``closing purchase 
transaction'' means an IEX Options Transaction that reduces or 
eliminates a short position in an options contract.
     Closing Writing Transaction. The term ``closing writing 
transaction'' means an IEX Options Transaction that reduces or 
eliminates a long position in an options contract.
     Control. The term ``control'' means the power to exercise 
a controlling influence over the management or

[[Page 26870]]

policies of a person, unless such power is solely the result of an 
official position with such person. Any person who owns beneficially, 
directly or indirectly, more than 20% of the voting power in the 
election of directors of a corporation, or more than 25% of the voting 
power in the election of directors of any other corporation which 
directly or through one or more affiliates owns beneficially more than 
25% of the voting power in the election of directors of such 
corporation, shall be presumed to control such corporation.\63\
---------------------------------------------------------------------------

    \63\ This definition is substantively identical to the 
definition in CBOE Rule 1.1. IEX proposes to incorporate this 
definition, because the term is not specifically defined in the MEMX 
rulebook and IEX believes that term would provide helpful context to 
Options Members with respect to other rules that use the term, e.g., 
proposed IEX Rule 19.200.
---------------------------------------------------------------------------

     Covered Short Position. The term ``covered short 
position'' means (i) an options position where the obligation of the 
writer of a call option is secured by a ``specific deposit'' or an 
``escrow deposit'' meeting the conditions of Rules 610(f) or 610(g), 
respectively, of the Rules of the Clearing Corporation, or the writer 
holds in the same account as the short position, on a share-for-share 
basis, a long position either in the underlying security or in an 
options contract of the same class of options where the exercise price 
of the options contract in such long position is equal to or less than 
the exercise price of the options contract in such short position; and 
(ii) an options position where the writer of a put option holds in the 
same account as the short position, on a share-for-share basis, a long 
position in an options contract of the same class of options where the 
exercise price of the options contract in such long position is equal 
to or greater than the exercise price of the options contract in such 
short position.
     Customer. The term ``Customer'' means a Public Customer or 
a broker-dealer.
     Customer Order. The term ``Customer order'' means an 
agency order for the account of a Customer.
     Directed Order. The term ``Directed Order'' is an order 
entered into the System by an Options Member with a designation for a 
Market Maker in that class (referred to as a ``Directed Market Maker'' 
or ``DMM''). To qualify as a Directed Order, an order must be entered 
on behalf of a Priority Customer.\64\
---------------------------------------------------------------------------

    \64\ This definition is based upon the definition in MIAX 
Options Exchange (``MIAX'') Rule 100, with the distinction that IEX 
proposes to make any Market Maker eligible to receive a Directed 
Order, while MIAX only allows their Lead Market Makers (akin to 
IEX's proposed ``Specialists'') and Primary Lead Market Makers 
eligible; this aspect of IEX's proposed rule change is based upon 
and substantially similar to CBOE Rule 5.32. Additionally, IEX 
proposes to include language in the last sentence of this definition 
based on NYSE Amex Rule 900.3NYP(i)(4) to clarify that an order 
submitted on behalf of a non-Priority Customer would be treated as a 
non-Directed Order.
---------------------------------------------------------------------------

     Discretion. The term ``discretion'' means the authority of 
a broker or dealer to determine for a Customer the type of option, the 
class or series of options, the number of contracts, or whether options 
are to be bought or sold.
     European-Style Option. The term ``European-style option'' 
means an options contract that, subject to the provisions of Rule 
24.100 (relating to the cutoff time for exercise instructions) and to 
the Rules of the Clearing Corporation, can be exercised only on its 
expiration date.
     Exchange Act. The term ``Exchange Act'' or ``Act'' means 
the Securities Exchange Act of 1934, as amended, or Rules thereunder.
     Exercise Price. The term ``exercise price'' means the 
specified price per unit at which the underlying security may be 
purchased or sold upon the exercise of an options contract.
     He, Him, and His. The terms ``he,'' ``him'' and ``his'' 
are deemed to refer to persons of female as well as male gender, and to 
include organizations, as well as individuals, when the context so 
requires.
     IEX Exchange and Exchange. The terms ``IEX Exchange'' and 
``Exchange'' mean Investors' Exchange LLC, a registered national 
securities exchange.
     IEX Options. The term ``IEX Options'' means IEX Options 
LLC, a Delaware limited liability company wholly owned by the Exchange, 
which operates as an options trading facility of the Exchange under 
Section 3(a)(2) of the Exchange Act.
     IEX Options Book. The term ``IEX Options Book'' means the 
electronic book of options orders maintained by the System.\65\
---------------------------------------------------------------------------

    \65\ This definition is substantively identical to the 
equivalent definition in the MEMX rulebook, except that it refers to 
IEX, not MEMX.
---------------------------------------------------------------------------

     IEX Options Transaction. The term ``IEX Options 
Transaction'' means a transaction involving an options contract that is 
effected on or through IEX Options or its facilities or systems.\66\
---------------------------------------------------------------------------

    \66\ This definition is substantively identical to the 
equivalent definition in the MEMX rulebook, except that it refers to 
IEX, not MEMX.
---------------------------------------------------------------------------

     Individual Equity Option. The term ``individual equity 
option'' means an options contract which is an option on an equity 
security.
     Long Position. The term ``long position'' means a person's 
interest as the holder of one or more options contracts.
     Market Makers (and Options Market Makers). The terms 
``Market Makers'' or ``Options Market Makers'' refer collectively to 
Options Members registered, pursuant to Rule 23.100, as either a 
``Registered Market Maker'' or a ``Specialist''.\67\
---------------------------------------------------------------------------

    \67\ This definition is substantively identical to the 
definition in the MIAX rulebook, except that MIAX has three classes 
of Market Makers (Registered Market Makers, Lead Market Makers, and 
Primary Lead Market Makers) while IEX proposes to have two classes 
of Market Makers: Registered Market Makers (equivalent to MIAX 
Registered Market Maker) and Specialists (which is based on MIAX's 
Lead Market Maker and Primary Lead Market Maker rules). IEX proposes 
to incorporate this definition, because the Market Maker rules 
proposed herein are substantially based upon the rules of MIAX.
---------------------------------------------------------------------------

     MPID. The term ``MPID'' means unique market participant 
identifier assigned to an Options Member.
     NBB, NBO, and NBBO. The term ``NBB'' means the national 
best bid, the term ``NBO'' means the national best offer, and the term 
``NBBO'' means the national best bid or offer as calculated by IEX 
Options based on market information received by IEX Options from OPRA.
     Offer. The term ``offer'' means a Limit order to sell one 
or more options contracts.
     OPRA. The term ``OPRA'' means the Options Price Reporting 
Authority.
     Opening Purchase Transaction. The term ``opening purchase 
transaction'' means a IEX Options Transaction that creates or increases 
a long position in an options contract.
     Opening Writing Transaction. The term ``opening writing 
transaction'' means a IEX Options Transaction that creates or increases 
a short position in an options contract.
     Options Contracts. The term ``options contract'' means a 
put or a call issued, or subject to issuance by the Clearing 
Corporation pursuant to the Rules of the Clearing Corporation.
     Options Market Close and Market Close. The terms ``options 
market close'' and ``market close'' mean the time the Exchange 
specifies for the end of a trading session on the Exchange on that 
trading day.
     Options Market Open and Market Open. The terms ``options 
market open'' and ``market open'' mean the time the Exchange specifies 
for the beginning of a trading session on the Exchange on that trading 
day.
     Options Member. The term ``Options Member'' means a firm, 
or organization that is registered with the Exchange pursuant to 
Chapter 18 of these Rules for purposes of participating in options 
trading on IEX Options as an ``Options Order Entry Firm'', ``Options 
Market Maker'', or ``Clearing Member.''

[[Page 26871]]

     Options Member Agreement. The term ``Options Member 
Agreement'' means the agreement to be executed by Options Members to 
qualify to participate on IEX Options.
     Options Order Entry Firm, Order Entry Firm, and OEF. The 
terms ``Options Order Entry Firm'' and ``Order Entry Firm'' or ``OEF'' 
mean those Options Members representing as agent Customer Orders on IEX 
Options and those non-Market Maker Members conducting proprietary 
trading.
     Options Principal. The term ``Options Principal'' means a 
person engaged in the management and supervision of the Options 
Member's business pertaining to options contracts that has 
responsibility for the overall oversight of the Options Member's 
options related activities on the Exchange.
     Order. The term ``order'' means a firm commitment to buy 
or sell options contracts as defined in Rule 22.100.
     Outstanding. The term ``outstanding'' means an options 
contract which has been issued by the Clearing Corporation and has 
neither been the subject of a closing writing transaction nor has 
reached its expiration date.
     Primary Market. The term ``primary market'' means the 
primary exchange on which an underlying security is listed.\68\
---------------------------------------------------------------------------

    \68\ This definition is based on the definition in CBOE Rule 
1.1, because IEX believed the definition was more streamlined than 
the equivalent definition in the MEMX rulebook.
---------------------------------------------------------------------------

     Priority Customer and Priority Customer Order. The term 
``Priority Customer'' means any person or entity that is not: (A) a 
broker or dealer in securities; or (B) a Professional. The term 
``Priority Customer Order'' means an order for the account of a 
Priority Customer.
     Professional. The term ``Professional'' means any person 
or entity that (A) is not a broker or dealer in securities; and (B) 
places more than 390 orders in listed options per day on average during 
a calendar month for its own beneficial account(s). All Professional 
orders shall be appropriately marked by Options Members.\69\
---------------------------------------------------------------------------

    \69\ See Supplementary Material .01 to proposed Rule 17.100, 
which sets forth the methodology for calculation of Professional 
orders.
---------------------------------------------------------------------------

     Protected Quotation. The term ``Protected Quotation'' has 
the meaning provided in Rule 28.100.
     Public Customer and Public Customer Order. The term 
``Public Customer'' means a person that is not a broker or dealer in 
securities. The term ``Public Customer Order'' means an order for the 
account of a Public Customer.
     Put. The term ``put'' means an options contract under 
which the holder of the option has the right, in accordance with the 
terms and provisions of the option and the Rules of the OCC, to sell to 
the Clearing Corporation the number of units of the underlying security 
covered by the options contract, at a price per unit equal to the 
exercise price, upon the timely exercise of such option.
     Quarterly Options Series. The term ``Quarterly Options 
Series'' means a series in an options class that is approved for 
listing and trading on the Exchange in which the series is opened for 
trading on any business day and expires at the close of business on the 
last business day of a calendar quarter.
     Quote or Quotation. The terms ``quote'' or ``quotation'' 
means a bid or offer entered by a Market Maker as a firm order that 
updates the Market Maker's previous bid or offer, if any. When the term 
order is used in these Rules and a bid or offer is entered by the 
Market Maker in the options series to which such Market Maker is 
registered, such order shall, as applicable, constitute a quote or 
quotation for purposes of these Rules. A quote or quotation may be 
canceled or repriced in accordance with Rules 22.250, 22.260, or 
23.150, if so designated by the Market Maker to assist in its risk 
management.
     Registered Market Maker. The term ``Registered Market 
Maker'' means an Options Member registered with the Exchange for the 
purpose of making markets in securities traded on the Exchange, who is 
vested with the rights and responsibilities specified in Chapter 23 of 
these Rules with respect to Registered Market Makers.\70\
---------------------------------------------------------------------------

    \70\ This definition is substantively identical to the 
definition in MIAX Rule 100. IEX proposes to incorporate this 
definition, because the Market Maker rules proposed herein are 
substantially based upon the rules of MIAX.
---------------------------------------------------------------------------

     Responsible Person. The term ``Responsible Person'' means 
a U.S.-based officer, director, or management-level employee of an 
Options Member, who is registered with the Exchange as an Options 
Principal, responsible for the direct supervision and control of 
associated persons of that Options Member.
     Rules of IEX Options. The term ``Rules of IEX Options'' 
mean the rules contained in Chapters 17 to 29 of the Investors Exchange 
Rules governing the trading of options on the Exchange.
     Rules of the Clearing Corporation and Rules of the OCC. 
The terms ``Rules of the Clearing Corporation'' and ``Rules of the 
OCC'' mean the Certificate of Incorporation, the By-Laws and the Rules 
of the Clearing Corporation, and all written interpretations thereof, 
as may be in effect from time to time.
     SEC or Commission. The terms ``SEC'' or ``Commission'' 
mean the United States Securities and Exchange Commission.
     Series of Options. The terms ``series'' or ``series of 
options'' mean all options contracts of the same class that are the 
same type of options and have the same exercise price and expiration 
date.
     Short Position. The term ``short position'' means a 
person's interest as the writer of one or more options contracts.
     Short Term Options Series. The term ``Short Term Options 
Series'' means a series in an options class that is approved for 
listing and trading on the Exchange in which the series is opened for 
trading on any Monday, Tuesday, Wednesday, Thursday or Friday that is a 
business day and that expires on the Monday, Tuesday, Wednesday, 
Thursday or Friday of the next business week, or, in the case of a 
series that is listed on a Friday and expires on a Monday, is listed 
one business week and one business day prior to that expiration. If a 
Tuesday, Wednesday, Thursday or Friday is not a business day, the 
series may be opened (or shall expire) on the first business day 
immediately prior to that Tuesday, Wednesday, Thursday or Friday, 
respectively. For a series listed pursuant to this section for Monday 
expiration, if a Monday is not a business day, the series shall expire 
on the first business day immediately following that Monday.
     Specialist. The term ``Specialist'' means a Market Maker 
appointed by the Exchange to act as the primary lead Market Maker for 
the purpose of making markets in securities traded on the Exchange. The 
Specialist is vested with the rights and responsibilities specified in 
Chapter 23 of these Rules with respect to Specialists.\71\
---------------------------------------------------------------------------

    \71\ This definition is substantively identical to the 
definition of Lead Market Makers and Primary Lead Market Makers in 
MIAX Rule 100. As discussed above, IEX proposes to incorporate the 
MIAX definitions for both Lead Market Makers and Primary Lead Market 
Makers into its definition for Specialists, because the Market Maker 
rules proposed herein are substantially based upon the rules of 
MIAX.
---------------------------------------------------------------------------

     SRO. The term ``SRO'' means a self-regulatory organization 
as defined in Section 3(a)(26) of the Exchange Act.
     System. The term ``System'' means the automated trading 
system used by IEX Options for the trading of options contracts.

[[Page 26872]]

     Timestamp. The term ``timestamp'' means the effective time 
sequence assigned to an order for purposes of determining its priority 
ranking.
     Trading Permit. The term ``Trading Permit'' means a 
license issued by the Exchange to an Options Member that grants the 
Trading Permit Holder (``TPH'') the right to access one or more of the 
facilities of the Exchange for the purpose of effecting transactions in 
options traded on the Exchange without the services of another person 
acting as broker, and otherwise to access the facilities of the 
Exchange for purposes of trading or reporting transactions or 
transmitting orders or quotations in options traded on the Exchange, or 
to engage in other activities that, under the Rules of IEX Options, may 
only be engaged in by the TPH that satisfies any applicable 
qualification requirements to exercise those rights. A Trading Permit 
conveys no ownership interest in the Exchange, is only available 
through the Exchange, and is subject to the terms and conditions set 
forth in Rule 18.140.\72\
---------------------------------------------------------------------------

    \72\ This definition is substantively identical to the 
definition in CBOE Rule 1.1. IEX proposes to incorporate this 
definition, because its proposed Trading Permit rule (Rule 18.140), 
is substantively similar to the equivalent CBOE Rule (CBOE Rule 
3.1).
---------------------------------------------------------------------------

     Trading Permit Holder. The term ``Trading Permit Holder'' 
or ``TPH'' means the holder of a Trading Permit, as described in IEX 
Rule 18.140.\73\
---------------------------------------------------------------------------

    \73\ This definition is substantively identical to the 
definition in CBOE Rule 1.1. IEX proposes to incorporate this 
definition, because its proposed Trading Permit rule (Rule 18.140), 
is substantively similar to the equivalent CBOE Rule (CBOE Rule 
3.1).
---------------------------------------------------------------------------

     Type of Option. The term ``type of option'' means the 
classification of an options contract as either a put or a call.
     Uncovered. The term ``uncovered'' means a short position 
in an options contract that is not covered.
     Underlying Security. The term ``underlying security'' 
means the security that the Clearing Corporation shall be obligated to 
sell (in the case of a call option) or purchase (in the case of a put 
option) upon the valid exercise of an options contract.
     User. The term ``User'' means any Options Member or 
Sponsored Participant who is authorized to obtain access to the System 
pursuant to Rule 11.130 (Access).
Execution System
    IEX Options will utilize a pro-rata allocation model with execution 
priority dependent on the size and capacity of an order; specifically, 
Priority Customer or non-Priority Customer, as well as status as a 
Registered Market Maker or Specialist, as applicable. The proposed pro-
rata allocation model is similar to the MIAX and NYSE Amex options 
exchanges.\74\
---------------------------------------------------------------------------

    \74\ See infra note 96.
---------------------------------------------------------------------------

    The Exchange will become an exchange member of the OCC. The System 
will be linked to OCC for the Exchange to transmit locked-in trades for 
clearance and settlement.\75\
---------------------------------------------------------------------------

    \75\ Proposed Rule 22.220(a) notes that all Options transactions 
shall be submitted for clearance to the Clearing Corporation, and 
the Exchange shall assume no responsibility with respect to any 
unmatched trade or for any delays or errors in the reporting to it 
of trade information. This provision is based upon and substantively 
identical to MIAX Rule 524.
---------------------------------------------------------------------------

    IEX Options will include a de minimis delay on incoming order and 
quote messages designed to enable IEX to obtain the most accurate view 
of the market prior to processing orders and quotes, and an optional 
Market Maker quote parameter designed to protect Market Makers from 
excessive risk due to execution of quotes at stale prices, in addition 
to other risk protections substantially similar to those offered by 
other options exchanges.
    Anonymity. As set forth in proposed Rule 22.190, aggregated and 
individual transaction reports produced by the System will indicate the 
details of a User's transactions, including the contra party's unique 
market participant identifier (``MPID''), capacity, and clearing firm 
account number.\76\
---------------------------------------------------------------------------

    \76\ The Exchange shall also reveal a User's identity: (i) when 
a registered clearing agency ceases to act for a participant, or the 
User's clearing firm, and the registered clearing agency determines 
not to guarantee the settlement of the User's trades; and (ii) for 
regulatory purposes or to comply with an order of an arbitrator or 
court. See proposed Rule 22.190. The Exchange notes that proposed 
Rule 22.190 is identical to MEMX Rule 21.10.
---------------------------------------------------------------------------

    Latency Mechanism.77 IEX's proposal includes a de 
minimis hardware based latency mechanism (or speedbump) of 350 
microseconds added to each incoming order and quote message \78\ 
designed to enable IEX to obtain the most accurate view of the market 
prior to processing orders and quotes as well as to perform the Options 
Quote Indicator (``Indicator'') calculation, and effectuate any action, 
with current market data.\79\ If the Exchange determines to change the 
duration of the delay, it will do so only pursuant to an effective rule 
filing submitted to the Commission pursuant to Section 19 of the 
Exchange Act.\80\
---------------------------------------------------------------------------

    \77\ See proposed Rule 22.100(n).
    \78\ As it does for equities trading (which also applies an 
inbound latency of 350 microseconds), IEX will subject incoming 
order and quote messages to a de minimis delay using coiled optical 
fiber. See Rule 11.510(a). Due to force majeure events and acts of 
third parties, the Exchange does not guarantee that the delay will 
always be consistent. The Exchange will periodically monitor such 
latency and will make adjustments to the latency as reasonably 
necessary to achieve consistency with the latency targets as soon as 
commercially practicable.
    \79\ See infra for more information about the Indicator.
    \80\ The latency mechanism will not apply to outbound 
communications from the Exchange to a User, inbound and outbound 
communications between the Exchange and an Away Market regarding a 
routed order, inbound communications from data feeds, order 
processing and order execution on the IEX Options Order Book, 
outbound communications to the Exchange's proprietary data feeds or 
OPRA.
---------------------------------------------------------------------------

    Hours of Operation. As provided in proposed Rule 22.110(a), the IEX 
Options System will begin accepting orders and quotes beginning at 8:00 
a.m.\81\ pursuant to the market opening procedures described in 
proposed Rule 22.160. Orders and bids and offers shall be open and 
available until 4:00 p.m. except for options contracts on Fund Shares, 
as defined in proposed Rule 20.120(i), which may close as of 4:15 p.m. 
The Proposed Hours of Operation rule is based on MEMX Rule 21.2, except 
that MEMX does not allow for submission of quotes before the market 
opens for trading; IEX notes that other exchanges begin accepting 
orders and quotes before the market opens, for example CBOE begins 
accepting quotes at 7:30 a.m.\82\ Except as set forth above, IEX 
Options shall operate during the normal business days and hours set 
forth in the rules of the primary market trading the securities 
underlying options traded on IEX Options, absent unusual conditions as 
may be determined by the Exchange.\83\ IEX Options will not be open for 
business on any holiday observed by the Exchange.\84\
---------------------------------------------------------------------------

    \81\ All times in this filing refer to the Eastern time zone.
    \82\ See CBOE Rule 5.7.
    \83\ See proposed IEX Rule 22.110(b).
    \84\ See proposed IEX Rule 22.110(c).
---------------------------------------------------------------------------

    Units of Trading. As stated in proposed Rule 22.120, the unit of 
trading in each series of options traded on IEX Options will be the 
unit of trading established for that series by the OCC pursuant to the 
rules of the OCC and the agreements of the Exchange with the OCC. The 
proposed determination of the unit of trading for a series of options 
traded on IEX Options is the same as on MEMX Options pursuant to MEMX 
Rule 21.3.
    Minimum Quotation and Trading Increments. As stated in proposed 
Rule 22.140(a), the Exchange is proposing to apply the following 
quotation increments: (1) if the options series is trading at less than 
$3.00, five (5) cents; (2) if the options series is trading at $3.00 or 
higher, ten (10) cents; and (3) if the options series is trading 
pursuant

[[Page 26873]]

to the Penny Interval Program one (1) cent if the options series is 
trading at less than $3.00, five (5) cents if the options series is 
trading at $3.00 or higher, except for QQQ, SPY, or IWM where the 
minimum quoting increment will be one (1) cent for all series. In 
addition, as stated in proposed Rule 22.140(b), the Exchange is 
proposing that the minimum trading increment for options contracts 
traded on IEX Options will be one (1) cent for all series. Such 
proposed minimum quotation and trading increments are the same as on 
MEMX Options pursuant to MEMX Rules 21.5(a) and (b).
    Penny Interval Program. As set forth in proposed Rule 22.140(c), 
the Exchange is proposing to adopt a Penny Interval Program that is 
substantially similar to the penny programs of other exchanges, 
including MEMX Options pursuant to MEMX Rule 21.5(d), which includes 
minimum quoting requirements for options classes listed under the Penny 
Interval Program. However, eligibility for inclusion in the Penny 
Interval Program will be limited to those classes already operating 
under penny programs of other options exchanges at the time IEX Options 
is launched. The list of options classes included in the Penny Interval 
Program will be announced by the Exchange via circular distributed to 
Options Members and published by the Exchange on its website.
    Order Types and Handling Instructions. The System will make 
available to Users two Order Types (as defined in proposed Rule 
22.100(d))--Limit orders and Market orders--as well as various order 
instructions and modifiers that can be appended to such orders. The 
characteristics and functionality of each Order Type is substantially 
similar to what is currently approved for use in the Exchange's 
equities trading facility or on other options exchanges, including MEMX 
Options, except where described below.
    IEX Options will support bulk messages for Options Market Makers as 
specified in the description of each Order Type or other instruction. 
Proposed Rule 22.100(d) includes the following details with respect to 
Limit orders and Market orders:
     Limit order. Limit orders are orders (including bulk 
messages) to buy or sell an option at a specified price or better. A 
Limit order is marketable when, for a Limit order to buy, at the time 
it is entered into the System, the order is priced at the current 
inside offer or higher, or for a Limit order to sell, at the time it is 
entered into the System, the order is priced at the current inside bid 
or lower.
     Market order. Market orders are orders to buy or sell at 
the best price available at the time of execution. Market orders to buy 
or sell an option traded on IEX Options will be rejected if they are 
received when the underlying security is subject to a ``Limit State'' 
or ``Straddle State'' as defined in the Plan to Address Extraordinary 
Market Volatility Pursuant to Rule 608 of Regulation NMS under the Act 
(the ``Limit Up-Limit Down Plan''). Bulk messages may not be Market 
orders.
    Pursuant to Rule 22.100(d)(3), Users have the option to designate 
an order as ``attributable'' to that User's MPID. Attributable orders 
are Market or Limit orders which display the User's MPID for purposes 
of trading on the Exchange. Use of attributable orders is voluntary. 
Attributable orders may not be available for all Exchange processes. 
The Exchange will distribute a circular to Options Members specifying 
the processes for which the attributable order-type shall be 
available.\85\
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    \85\ The proposed definition is substantively identical to the 
definition in MIAX Rule 516(e). IEX proposes to incorporate this 
definition and functionality, because MEMX Options does not have 
Attributable Orders.
---------------------------------------------------------------------------

    The System will also make available to Users several additional 
instructions that can be designated on an order (``Handling 
Instructions''). A Handling Instruction applied to a bulk message 
applies to each bid and offer within that bulk message. The Handling 
Instructions available on IEX Options are described in proposed Rule 
22.100(e) and will include the following:
     Book Only. Book Only is an instruction that an order is to 
be ranked and executed on the Exchange pursuant to proposed Rule 22.170 
(Order Display and Book Processing) or to be repriced or cancelled, as 
appropriate, without routing away to another options exchange.
     Post Only. Post Only is an instruction that an order is to 
be ranked and executed on the Exchange pursuant to proposed Rule 22.170 
(Order Display and Book Processing) or cancelled, as appropriate, 
without routing away to another options exchange except that the order 
will not remove liquidity from the IEX Options Book. The System 
reprices, cancels or rejects a bid (offer) designated as Post Only with 
a price that locks or crosses the Exchange's best offer (bid). A Market 
order cannot be designated as Post Only.
     Intermarket Sweep Order (``ISO''). ISOs are orders that 
shall have the meaning provided in proposed Rule 28.100, which relates 
to intermarket trading. Such orders may be executed at one or multiple 
price levels in the System without regard to Protected Quotations at 
other options exchanges (i.e., may trade through such quotations). The 
Exchange relies on the marking of an order as an ISO order when 
handling such order, and thus, it is the entering Options Member's 
responsibility, not the Exchange's responsibility, to comply with the 
requirements relating to ISOs. ISOs are not eligible for routing 
pursuant to proposed Rule 22.180. A Market order cannot be designated 
as an Intermarket Sweep Order. Users may not designate bulk messages as 
ISOs.
    The Exchange notes that each of the proposed Order Types and 
Handling Instructions available on IEX Options are based upon and 
substantially similar to those of MEMX, with the exception of the 
Attributable Orders not offered by MEMX.
    Time-in-Force (``TIF'') Designations. Users entering orders into 
the System may designate such orders to remain in force and available 
for display and/or potential execution for varying periods of time. 
Unless cancelled earlier, once these time periods expire, the order (or 
the unexecuted portion thereof) is returned to the entering party. A 
TIF applied to a bulk message applies to each bid and offer within that 
bulk message. Unless otherwise specified in the Exchange Rules or the 
context indicates otherwise, the Exchange determines which of the 
following TIFs are available on a class or system basis. The TIF 
designations available on IEX Options are described in proposed Rule 
22.100(g) and will include the following:
     Immediate Or Cancel (``IOC''). IOC means, for an order so 
designated, an order that is to be executed in whole or in part as soon 
as such order is received. The portion not so executed immediately on 
the Exchange or another options exchange is cancelled and is not posted 
to the IEX Options Book. IOC orders that are not designated as Book 
Only and that cannot be executed in accordance with proposed Rule 
22.170 on the System when reaching the Exchange will be eligible for 
routing away pursuant to proposed Rule 22.180.
     Day. Day means, for an order so designated, an order to 
buy or sell which, if not executed expires at market close. Market 
Makers may designate bulk messages as Day.
    The Exchange notes that each of the proposed TIF designations 
available on IEX Options is identical to the same TIF designations 
available on MEMX Options, except that they are applied differently in 
one respect. Specifically, MEMX Options allows bulk messages to

[[Page 26874]]

have a TIF of IOC. IEX is proposing to only allow bulk messages to have 
a TIF of DAY so that Market Makers do not take liquidity with quotes 
submitted via bulk messages, and which are meant for liquidity 
provision by Market Makers, which by definition the Exchange believes 
constitutes orders resting on the Order Book.
    Anti-Internalization Qualifier (``AIQ'') Modifiers. As with its 
equities market, the Exchange will allow Users to use certain AIQ 
modifiers, which are described in proposed Rule 22.100(h). Any incoming 
order designated with an AIQ modifier will be prevented from executing 
against a resting opposite side order also designated with an AIQ 
modifier and originating from the same MPID, Options Member identifier, 
trading group identifier, or Sponsored Participant identifier. The 
Exchange will offer the following AIQ modifiers: AIQ Cancel Newest, 
described in proposed Rule 22.100(h)(1); AIQ Cancel Oldest, described 
in proposed Rule 22.100(h)(2); AIQ Cancel Both, described in proposed 
Rule 22.100(h)(3); and AIQ Cancel Smallest, described in proposed Rule 
22.100(h)(4). The Exchange notes that each of the proposed AIQ 
modifiers available on IEX Options is substantially similar to the same 
modifiers available on MEMX Options,\86\ with the distinction that on 
MEMX a market maker may include the AIQ modifier on bulk messages, 
while IEX is proposing to not allow AIQ modifiers to be included on 
bulk messages because it would be meaningless on IEX where bulk 
messages will only be for liquidity adding quotes, and the AIQ modifier 
that dictates the AIQ interaction is determined by the liquidity 
removing order.\87\
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    \86\ MEMX does not offer an AIQ Cancel Smallest modifier, but it 
is offered by other exchanges such as CBOE. See CBOE Rule 5.6 (Match 
Trade Prevention Modifier--MTP Cancel Smallest).
    \87\ MEMX calls them ``Match Trade Prevention'' modifiers. See 
MEMX Rule 21.1(h).
---------------------------------------------------------------------------

    Re-Pricing Mechanism. Like other options exchanges, the Exchange 
proposes to offer a re-pricing mechanism to Users to comply with the 
order protection and trade through restrictions of the Options Order 
Protection and Locked/Crossed Market Plan.\88\ This re-pricing 
mechanism, described in proposed Rule 22.100(i), is referred to by the 
Exchange as Price Adjust and is substantially similar to the Price 
Adjust mechanism offered by MEMX Options pursuant to MEMX Rule 21.1(i), 
with the exception that IEX will only allow the ranked price and 
displayed price of an order that has been repriced to be adjusted to a 
more aggressive price one additional time (unlike MEMX, which allows 
multiple adjustments).\89\
---------------------------------------------------------------------------

    \88\ See Securities Exchange Act Release No. 60405 (July 30, 
2009), 74 FR 39362 (Aug. 6, 2009) (File No. 4-546).
    \89\ The Exchange notes that this behavior is substantially 
similar to the ``single price adjust'' behavior in CBOE Rule 
5.32(b)(2)(A).
---------------------------------------------------------------------------

    MPIDs. As proposed in Rule 22.100(j), the term ``MPID'' means the 
unique market participant identifier assigned to a User and shall refer 
to what the System uses to identify the User and the clearing number 
for the execution of orders and quotes submitted to the System with 
that MPID. Each MPID corresponds to a single User and a single clearing 
number of a Clearing Member with the Clearing Corporation. A User may 
obtain multiple MPIDs, which may be for the same or different clearing 
numbers. A User is able (in a form and manner determined by the 
Exchange) to designate which of its MPIDs may be used for each of its 
ports. If a User submits an order or quote through a port with an MPID 
not enabled for that port, the System cancels or rejects the order or 
quote. The Exchange notes that its proposed Rule 22.100(j) is identical 
to MEMX Rule 21.1(j) except that MEMX uses the term EFID rather than 
MPID.
    Ports and Bulk Messages. Proposed Rule 22.100(k) defines two types 
of ports: (1) a ``physical port,'' which provides a physical connection 
to the System and may provide access to multiple logical ports; and (2) 
a ``logical port'' or ``application session,'' which provides Users 
with the ability within the System to accomplish a specific function 
through a connection, such as order entry, data receipt, or access to 
information. The Exchange notes that each of the proposed types of 
ports available on IEX Options is identical to the same types of ports 
on MEMX Options.
    The term ``bulk message'' is proposed to mean a single electronic 
message a User submits with a Market Maker Capacity to the Exchange in 
which the User may enter, modify, or cancel up to an Exchange-specified 
number of bids and offers (which number the Exchange will announce via 
Exchange notice and publicly available technical specifications). The 
System handles a bulk message in the same manner as it handles an order 
or quote, unless the Exchange Rules specify otherwise.
    Only Market Makers may submit bulk messages through a logical port 
in a class in which the Market Maker has an appointment. In addition, 
bulk messages have a default TIF of Day and a default designation of 
Post Only. As proposed, the System will cancel, reject, or reprice a 
Post Only bulk message bid (offer) with a price that locks or crosses 
the Exchange best offer (bid) or ABO \90\ (ABB \91\).\92\ These 
provisions are similar to the manner in which market maker bulk 
messages are handled by MEMX, which allows bulk messages to also have a 
TIF of IOC, a designation as book only, and post only bulk messages in 
unassigned classes.\93\
---------------------------------------------------------------------------

    \90\ The term ``ABO'' means the best offer(s) disseminated by 
other Eligible Exchanges (as defined in proposed Rule 28.100) and 
calculated by the Exchange based on market information the Exchange 
receives from OPRA.
    \91\ The term ``ABB'' means the best bid(s) disseminated by 
other Eligible Exchanges (as defined in proposed Rule 28.100) and 
calculated by the Exchange based on market information the Exchange 
receives from OPRA.
    \92\ See proposed Rule 22.100.
    \93\ See MEMX Rule 21.1(l). IEX notes that the ability of the 
System to cancel or reject a post only order submitted on a bulk 
port with a price that locks or crosses the Exchange best offer 
(bid) or ABO (ABB) is substantively identical to MEMX Rule 
21.1(l)(3); IEX will also allow the System to reprice a post only 
order submitted on a bulk port with a price that locks or crosses 
the Exchange best offer (bid) or ABO (ABB), which is substantively 
identical to the functionality in CBOE Rule 5.32(b)(1)(B).
---------------------------------------------------------------------------

    Cancel Back. The term ``Cancel Back'' is proposed to mean an 
instruction a User designates on an order (including bulk messages) to 
not be subject to the Price Adjust process pursuant to proposed Rule 
22.100(i). The System cancels or rejects an order with a Cancel Back 
instruction (immediately at the time the System receives the order or 
upon return to the System after being routed away) if displaying the 
order on the Book would create a violation of proposed Rule 28.120, or 
if the order cannot otherwise be executed or displayed in the Book at 
its limit price. The System executes a Book Only--Cancel Back order 
against resting orders. The proposed definition of Cancel Back in 
proposed Rule 22.100(m) is substantively identical to a Cancel Back 
Order defined in MEMX Rule 21.1(m).
    Market Opening Procedures. As proposed, the System will accept 
quotes, Limit orders with a TIF of DAY and Market orders for inclusion 
in the opening process (``Opening Process'') beginning at 8:00 a.m. or 
immediately upon trading being halted in an options series due to the 
primary listing market for the applicable underlying security declaring 
a regulatory trading halt, suspension, or pause with respect to such 
security (a ``Regulatory Halt''), and will continue to accept Market 
and Limit orders and quotes until such time as the Opening Process is 
initiated in

[[Page 26875]]

that options series (the ``Pre-open state'').\94\
---------------------------------------------------------------------------

    \94\ See proposed Rule 22.160(a)(13).
---------------------------------------------------------------------------

    After the first transaction on the primary listing market after 
9:30 a.m. in the securities underlying the options as reported on the 
first print disseminated pursuant to an effective national market 
system plan or the Regulatory Halt has been lifted, the related options 
series will be opened automatically as described below. The Exchange 
will conduct its ``Core Open Auction'' for each series of options 
contracts upon receipt of an ``Auction Trigger'', i.e., the moment that 
the Primary Market for the underlying security first disseminates both 
a two-sided quote and a trade of any size that is at or within the 
quote (in the case of reopening after a Regulatory Halt, the Auction 
Trigger also includes notification that the underlying stock is no 
longer halted).\95\ The Exchange will disseminate a message to market 
participants indicating the initiation of the opening process, conduct 
the opening auction, and then transition to continuous trading for each 
series of options contracts.\96\ The proposed market opening procedures 
are substantially similar to the market opening procedures specified in 
NYSE Arca Options Rule 6.64P-O, subject to several differences, most 
notably that any imbalance would be allocated on a pro rata basis.\97\
---------------------------------------------------------------------------

    \95\ See proposed Rule 22.160(a)(5) and (7).
    \96\ See proposed Rule 22.160. IEX notes that pursuant to 
proposed Rule 22.160(b)(3), the priority overlays specified in 
proposed Rule 22.170(f)(2) and (3) will not be available during an 
Auction, but will resume once the Exchange has transitioned to 
continuous trading.
    \97\ See proposed Rule 22.160(b). Other differences include: IEX 
will begin accepting orders for the opening auction at 8:00 a.m., 
while NYSE Arca begins accepting orders for their opening auction at 
6:00 a.m. See proposed Rule 22.160(a)(13)(A) versus NYSE Arca 
Options Rule 6.64P-O(a)(12)(A). Additionally, IEX will begin 
disseminating Auction Imbalance Information at 8:30 a.m., while NYSE 
Arca begins disseminating imbalance information at 8:00 a.m. See 
proposed Rule 22.160(c)(1) versus NYSE Arca Options Rule 6.64P-
O(c)(1). Further, IEX does not define Far Clearing Price, because 
IEX does not propose to have Auction Only orders, to which the Far 
Clearing Price relates.
---------------------------------------------------------------------------

    Order Display/Matching System. The System will be based upon 
functionality currently approved for use in the Exchange's equities 
trading system. Specifically, the System will allow Users to enter 
Market orders and priced Limit orders to buy (bids) and sell (offers). 
All bids or offers made and accepted on IEX Options in accordance with 
the Exchange Rules shall constitute binding contracts, subject to 
applicable requirements of the Exchange Rules and the Rules of the 
Clearing Corporation. Such orders are executable against marketable 
contra-side orders in the System.\98\ Resting quotes and orders on the 
IEX Options Book will be prioritized according to price. If there are 
two or more quotes or orders at the best price, then the options 
contracts will be allocated proportionally according to size (in a pro-
rata fashion), rounded down to the nearest contract. If there are 
residual options contracts to be filled, the quote or order with the 
largest remaining size (based on the pro rata calculation) will receive 
the first contract, and each successive contract (if any) will be 
allocated to each subsequent quote or order based on size (largest to 
smallest). If there are two or more quotes or orders with the same 
remaining size, then the quote or order with the first time priority 
will be allocated the next options contract. Each successive options 
contract (if any) will be allocated in the same manner.\99\
---------------------------------------------------------------------------

    \98\ See proposed Rule 22.170.
    \99\ See proposed Rule 22.170(b). This pro-rata allocation 
methodology is based upon the substantially similar methodology in 
MIAX Rule 514(c)(2) and NYSE Amex Rule 964NYP(i)(2).
---------------------------------------------------------------------------

    Routing. IEX Options will offer a simple optional routing 
functionality to facilitate compliance with applicable regulations and 
will not offer other complex routing strategies. Options Members can 
designate orders that have not been executed in full by the System 
pursuant to proposed Rule 22.170 above as either available for routing 
or not available for routing.\100\ IEX Options will support orders that 
are designated to be routed to the NBBO as well as orders that will 
execute only within IEX Options. Orders that are designated to execute 
at the NBBO will be routed to other options markets to be executed when 
the Exchange is not at the NBBO \101\ consistent with the Options Order 
Protection and Locked/Crossed Market Plan.\102\
---------------------------------------------------------------------------

    \100\ See proposed Rule 22.180(a).
    \101\ As described infra, if the order is eligible for the Step-
Up Mechanism (set forth in proposed Rule 22.270), the System will 
attempt to fill the order before routing it to an away market.
    \102\ See supra note 85.
---------------------------------------------------------------------------

    Subject to the exceptions contained in proposed Rule 28.110(b), the 
System will ensure that an order will not be executed at a price that 
trades through another options exchange. An order that is designated by 
an Options Member as routable will be routed in compliance with 
applicable trade-through restrictions. Any order entered with a price 
that would lock or cross a Protected Quotation that is not eligible for 
either routing or the price adjust process as defined in proposed Rule 
22.100(i) will be cancelled. Bulk messages are not eligible for 
routing.
    IEX Options will route orders in options via IEX Services LLC 
(``IEX Services''), which serves as the Outbound Router of the 
Exchange, as defined in Rule 2.220 (IEX Services LLC as Outbound 
Router).\103\ The function of the Outbound Router will be to route 
orders in options listed and open for trading on IEX Options by 
transmitting such orders to one or more routing brokers that are not 
affiliated with the Exchange to other options exchanges (``Routing 
Services'') pursuant to the Exchange Rules on behalf of IEX 
Options.\104\ The Outbound Router is subject to regulation as a 
facility of the Exchange, including the requirement to file proposed 
rule changes under Section 19 of the Exchange Act.\105\ Parties that do 
not desire to use the Routing Services provided by the Exchange must 
designate orders as not available for routing.\106\ The Exchange notes 
that the proposed rules relating to the routing of orders on IEX 
Options to away options markets are substantively identical to the MEMX 
Back-Up Order Routing Services described in MEMX Rule 21.9(e).\107\
---------------------------------------------------------------------------

    \103\ See proposed Rule 22.180(d).
    \104\ Id.
    \105\ Id.
    \106\ Id.
    \107\ MEMX also offers the option of using its outbound router, 
MEMX Execution Services, to route directly to other exchanges. See 
MEMX Rule 21.9(d). IEX is not proposing to adopt this functionality 
because it will only provide for routing through IEX Services to 
third party broker dealers.
---------------------------------------------------------------------------

    Priority of Routed Orders. Orders that have been routed by the 
System to other options exchanges are not ranked and maintained in the 
IEX Options Book pursuant to proposed Rule 22.170, and therefore are 
not available to execute against incoming orders. Once routed by the 
System, an order becomes subject to the rules and procedures of the 
destination options exchange including, but not limited to, order 
cancellation. If a routed order is subsequently returned, in whole or 
in part, that order, or its remainder, shall receive a new time stamp 
reflecting the time of its return to the System.\108\
---------------------------------------------------------------------------

    \108\ See proposed Rule 22.180(b).
---------------------------------------------------------------------------

    Market Access. In connection with the proposed rules regarding 
routing to away options exchanges, proposed Rule 22.180(e) provides 
that IEX Services has, pursuant to Rule 15c3-5 under the Act,\109\ 
implemented certain tests designed to mitigate the financial and 
regulatory risks associated with providing the Exchange's Users with 
access to such away options exchanges. Pursuant to the policies and 
procedures developed by IEX Services to comply

[[Page 26876]]

with Rule 15c3-5, if an order or series of orders are deemed to be 
erroneous or duplicative, would cause the entering User's credit 
exposure to exceed a preset credit threshold, or are non-compliant with 
applicable pre-trade regulatory requirements (as defined in Rule 15c3-
5), IEX Services will reject such orders prior to routing and/or seek 
to cancel any orders that have been routed. This is consistent with the 
routing implementation of other options exchanges, and the Exchange 
notes that proposed Rule 22.180(e) is substantively identical to MEMX 
Rule 21.9(f).
---------------------------------------------------------------------------

    \109\ 17 CFR 240.15c3-5.
---------------------------------------------------------------------------

    Order Priority. After the opening, trades on the Exchange will 
occur when a buy order/quote and a sell order/quote match on the 
Exchange's order book. The System shall execute trading interest within 
the System in price priority, meaning it will execute all trading 
interest at the best price level within the System before executing 
trading interest at the next best price. Pursuant to proposed Rule 
22.170, after considering price priority, all options contracts are 
allocated proportionally according to size (in a pro-rata fashion). If 
the executed quantity cannot be evenly allocated, the remaining options 
contracts will be distributed one at a time based upon price-size-time 
priority.
    In addition, the Exchange supports multiple priority overlays that 
apply ahead of the default pro-rata allocation at a given price level. 
Pursuant to proposed Rule 22.170(f),\110\ these priority overlays are 
made available at the Exchange's discretion on a class-by-class basis: 
(1) the Priority Customer overlay,\111\ which provides resting interest 
from Priority Customers with priority over all non-Priority Customer 
interest at the same price, will always take priority over all other 
priority overlays; (2) the Specialist Participation Entitlement 
overlay,\112\ which provides the Specialist with priority over interest 
from other non-Priority Customers for a certain percentage of contracts 
allocated at the same price (entitling the Specialist to 60% of the 
allocation if there is another non-Priority Customer at the NBBO or 40% 
if there are two or more other non-Priority Customers at the NBBO 
\113\) when quoting at the NBBO, inclusive of the case in which the 
order is directed to the Specialist; (3) the Directed Market Maker 
Participation Entitlement overlay,\114\ which provides a Directed 
Market Maker with priority over interest from other non-Priority 
Customers for a certain percentage of contracts allocated at the same 
price (entitling the DMM to 60% of the allocation if there is another 
non-Priority Customer at the NBBO or 40% if there are two or more other 
non-Priority Customers at the NBBO \115\) when quoting at the NBBO and 
always applies in place of the Specialist Participation Entitlement 
overlay when both are in effect and the order is directed to a Directed 
Market Maker other than the Specialist; \116\ and (4) the Small-Size 
Order Entitlement overlay,\117\ which provides a Specialist quoting at 
the NBBO the priority to execute against the entire size of an order or 
quote of five or fewer contracts that does not first execute against 
any Priority Customer orders at that price, provided that if an order 
subject to the Small-Size Order Entitlement is directed to a Directed 
Market Maker who is not the Specialist quoting at the NBBO, and the 
Directed Market Maker priority overlay is enabled in the series, then 
the Directed Market Maker Participation Entitlement priority overlay 
will apply instead of the Small-Size Order Entitlement priority 
overlay,\118\ and in the case that an order subject to the Small-Size 
Order Entitlement is directed to the Specialist, the Small-Size Order 
Entitlement priority overlay will apply while the Specialist 
Participation Entitlement and Directed Market Maker Entitlement 
overlays will not.\119\
---------------------------------------------------------------------------

    \110\ Proposed Rule 22.170(f) is based upon and substantially 
similar to CBOE Rule 5.32(a)(2), except is different in one respect. 
Unlike CBOE, in the event that a Small-Size order is directed to a 
Specialist, the IEX Options trading system will apply the Small-Size 
Order Entitlement to the order and not the Directed Order guarantee, 
meaning the Specialist will have priority to execute against the 
entire size of the order that does not execute against any Priority 
Customer orders at that price.
    \111\ See proposed Rule 22.170(f)(1).
    \112\ See proposed Rule 22.170(f)(2). This overlay may only be 
in effect if the Priority Customer overlay is also in effect. See 
proposed Rule 22.170(f).
    \113\ These allocation entitlements are based on MIAX Rule 
514(h)(1), after accounting for the additional priorities afforded 
market makers on MIAX, as set forth in MIAX Rule 514(e). See supra 
note 96 and accompanying text.
    \114\ See proposed Rule 22.170(f)(2). This overlay may only be 
in effect if the Priority Customer overlay is also in effect. See 
proposed Rule 22.170(f).
    \115\ These allocation entitlements are based on MIAX Rule 
514(h)(1), after accounting for the additional priorities afforded 
market makers on MIAX, as set forth in MIAX Rule 514(e). See supra 
note 96 and accompanying text.
    \116\ Prioritizing the DMM entitlement over the Specialist 
entitlement in these circumstances is the same functionality offered 
by several other exchanges. See, e.g., NYSE Amex Options Rule 
964NYP(h)(1).
    \117\ See proposed Rule 22.170(f)(3).
    \118\ See proposed Rule 22.170(f)(3)(A).
    \119\ See proposed Rule 22.170(f)(3)(B). This is functionally 
identical to how NYSE Amex Options allocates small-size Directed 
Orders that are directed to a Specialist. See NYSE Amex Options Rule 
965NYP(h)(2)(B).
---------------------------------------------------------------------------

    After executions resulting from the Priority Overlays described 
above, orders and quotes within the System for the accounts of non-
Priority Customers, including Professional Customers, have next 
priority. If there is more than one highest bid or more than one lowest 
offer on the Options Order Book for the account of a non-Priority 
Customer, then such bids or offers will be afforded priority on a size 
pro-rata basis, as described above.
    Step Up Mechanism. IEX proposes to offer Options Members an 
optional Step Up Mechanism (``SUM''), which is a feature within the 
System that provides automated order handling in designated classes 
trading for qualifying orders that are not automatically executed by 
the System.\120\ The Exchange will determine eligibility of an order 
for the SUM (including order size, type, capacity, handling 
instructions, as well as which classes of options contracts). The 
Exchange will not initiate the SUM process if the NBBO is crossed.\121\ 
SUM automatically processes upon receipt of an eligible order that is 
marketable against the BBO that is not the NBBO; or an eligible order 
that would improve the Exchange's BBO and that is marketable against 
the ABBO. This proposed functionality is substantively identical to the 
Step-Up Mechanism offered by CBOE, with the exception that IEX is not 
proposing to offer All or None orders.\122\ IEX notes that the optional 
SUM mechanism is designed to benefit a routable order that is not 
immediately eligible for execution on the Exchange, but if routed to an 
away exchange might miss a potential execution on that exchange. And, 
because SUM is optional, a Member can choose not to have its order 
subject to the SUM mechanism if it determines that the functionality is 
not consistent with its objectives. Given the multitude of tradeable 
listed options securities (compared to listed equities) not all 
available liquidity is always reflected in an exchange's order book, 
and the SUM mechanism provides an opportunity to source such additional 
liquidity to the benefit of the order in question. Moreover, IEX notes 
as well that other options exchanges offer similar mechanisms, and 
order flow might be directed to such exchanges if IEX did not offer 
such a mechanism.
---------------------------------------------------------------------------

    \120\ See proposed Rule 22.270. IEX's proposed Step-Up Mechanism 
is substantively identical to CBOE Rule 5.35.
    \121\ See proposed Rule 22.270(a).
    \122\ See CBOE Rule 5.35.
---------------------------------------------------------------------------

    Upon receipt of a SUM eligible order, the System will expose the 
order at the NBBO upon receipt for a period of time

[[Page 26877]]

determined by the Exchange on a class-by-class basis, which period of 
time may not exceed one second. All Users may submit responses to the 
exposure message, which must be limited to the size of the order being 
exposed, may be modified, cancelled or replaced any time during the 
exposure period, and are cancelled back at the end of the exposure 
period if unexecuted. Responses priced at the prevailing NBBO or better 
will immediately trade against the order in time priority. If during 
the exposure period the Exchange receives an unrelated order (or quote) 
on the opposite side of the market from the exposed order that could 
trade against the exposed order at the prevailing NBBO price or better, 
then the orders will trade at the prevailing NBBO price. The exposure 
period will not terminate if a quantity remains on the exposed order 
after such trade.
    Responses that are not immediately executable based on the 
prevailing NBBO may become executable during the exposure period based 
on changes to the NBBO. In the event of a change to the NBBO and at the 
conclusion of the exposure period, the Exchange will evaluate remaining 
responses as well as the ABBO and execute any remaining portion of the 
exposed order to the fullest extent possible at the best price(s) by 
executing against responses and unrelated orders.
    Following the exposure period, the Exchange will route the 
remaining portion of the exposed order to other exchanges, unless 
otherwise instructed by the User. Any portion of a routed order that 
returns unfilled shall trade against the Exchange's best bid/offer 
unless another exchange is quoting at a better price in which case new 
orders shall be generated and routed to trade against such better 
prices.
    Data Dissemination. The Exchange will disseminate to OPRA the 
highest bid and the lowest offer, and the aggregate quotation size 
associated therewith that is available, in accordance with the 
requirements of Rule 602 of Regulation NMS under the Act.\123\ The 
Exchange will also offer three data products: (1) IEX Options DEEP: an 
uncompressed data feed that offers depth of book quotations and 
execution information based on options orders entered into the System; 
(2) IEX Options TOPS: an uncompressed data feed that offers top of book 
quotations and execution information based on options orders entered 
into the System; and (3) DROP: an uncompressed data feed that offers 
information regarding the options trading activity of a specific 
User.\124\ DROP is only available to the User to whom the specific data 
relates and those recipients expressly authorized by the User.\125\
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    \123\ See proposed Rule 22.240(a).
    \124\ See proposed Rule 22.240(b).
    \125\ Data products will be subject to fees as specified in an 
effective Commission rule filing.
---------------------------------------------------------------------------

    Risk Controls. The Exchange also proposes to offer to all Users of 
IEX Options the ability to establish certain risk control parameters 
and limits that are intended to assist Users in managing their market 
risk. All options exchanges recognize the essential role of risk 
controls in managing market maker exposure and IEX intends to offer 
comparable controls to allow for these risk management protections. The 
proposed risk controls are based, in part, on those of the NYSE Arca 
and CBOE options exchanges, with certain additions and differences 
described below. The proposed risk controls are designed to offer Users 
protection from entering orders outside of certain size and price 
parameters, as well as certain standard or Exchange-established 
parameters based on order type and market conditions.
    The proposed risk controls include: (i) pre-trade risk controls; 
(ii) activity-based risk controls; and (iii) global risk controls, as 
set forth in proposed Rule 22.250.\126\ Pre-trade, activity-based, and 
global risk controls may be set before the beginning of a trading 
day.\127\ Pre-trade, activity-based, and global risk controls can be 
set at the MPID or MPID Group level,\128\ or both, depending on the 
risk control.\129\ Additionally, pre-trade risk controls to restrict 
the options class(es) transacted must be set per options class.\130\ 
The following describes each category of risk protection mechanism:
---------------------------------------------------------------------------

    \126\ Proposed Rule 22.250 is based upon and substantially 
similar to NYSE Arca Rule 6.40P-O.
    \127\ See proposed Rule 22.250(b)(1).
    \128\ MPID Groups, defined in proposed Rule 22.250(a)(5), are 
based upon CBOE Rule 5.34(c)(4)(A), which allows for the setting of 
risk control limits for EFID Groups, which are equivalent to MPID 
Groups. IEX notes that it proposes to retain the right to limit the 
number of MPID Groups an Options Member can configure based upon 
potential technical limitations.
    \129\ See proposed Rule 22.250(b)(2). IEX notes that while it 
allows these risk controls to be set at MPID or MPID Group levels, 
NYSE Arca allows the equivalent controls to be set at either the 
MPID or the MPID Sub-ID level (a more granular level than the MPID).
    \130\ See proposed Rule 22.250(b)(2).
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    Pre-Trade Risk Controls.\131\ The pre-trade risk controls mechanism 
is a set of optional limits, each of which an Options Member may 
utilize with respect to its trading activity on the Exchange. These 
controls include controls related to the maximum dollar amount for a 
single order to be applied one time and the maximum number of contracts 
that may be included in a single order before it can be traded. 
Additionally, there are optional controls related to the price of an 
order or quote (including percentage-based and dollar-based controls), 
controls related to the order types or modifiers that can be utilized, 
controls to restrict the options classes transacted, and controls to 
prohibit duplicative orders.
---------------------------------------------------------------------------

    \131\ See proposed Rule 22.250(a)(1), which is substantively 
identical to NYSE Arca Rule 6.40P-O(a)(2).
---------------------------------------------------------------------------

    Activity-Based Risk Controls.\132\ The Exchange also proposes to 
offer activity-based risk limits that may be applied to orders and 
quotes in an options class (when acting as a Market Maker, an Options 
Member is required to select at least one of the following controls 
\133\) based on specified thresholds measured over the course of a 
configurable time period (``Interval''). The Exchange will offer the 
following activity-based risk controls: (i) transaction-based risk 
limits, which are pre-established limits on the number of an Options 
Member's orders and quotes executed in a specified class of options per 
Interval; (ii) volume-based risk limits, which are pre-established 
limits on the number of contracts of an Options Member's orders and 
quotes that can be executed in a specified class of options per 
Interval; and (iii) percentage-based risk limits, which are pre-
established limits on the percentage of contracts executed in a 
specified class of options as measured against the full size of an 
Options Member's orders and quotes executed per Interval. To determine 
whether an Options Member has breached the specified percentage limit, 
the Exchange calculates the percent of each order or quote in a 
specified class of options that is executed during an Interval (each, a 
``percentage''), and sums up those percentages. This risk limit will be 
breached if the sum of the percentages exceeds the pre-established 
limit.
---------------------------------------------------------------------------

    \132\ See proposed Rule 22.250(a)(2), which is substantively 
identical to NYSE Arca Rule 6.40P-O(a)(3).
    \133\ See proposed Rule 22.250(c)(2)(A).
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    Global Risk Control.\134\ The Exchange also proposes to offer a 
global risk control, which is a pre-established limit on the number of 
times an Options Member may breach its activity-based risk controls per 
Interval.
---------------------------------------------------------------------------

    \134\ See proposed Rule 22.250(a)(3), which is substantively 
identical to NYSE Arca Options Rule 6.40P-O(a)(4).
---------------------------------------------------------------------------

    Automated Breach Actions.\135\ Proposed Rule 22.250(c) details the

[[Page 26878]]

``automated breach actions'' the Exchange will take if any of the three 
above-described risk controls are breached. Based on User preference, 
these actions can include blocking new orders and quotes, canceling 
orders and quotes on the Order Book, or notifying the Options Member of 
the breach. With respect to the activity-based and global risk controls 
(as well as Kill Switch Actions described below), in order to remain 
consistent with the firm quote obligations of a broker-dealer pursuant 
to Rule 602 of Regulation NMS, any marketable interest that is 
executable against an order or quote that is received \136\ prior to 
the time the applicable threshold is triggered and processed by the 
System will be automatically executed up to the size of the resting 
order or quote, regardless of whether the execution would cause the 
Options Member to exceed their pre-set risk threshold(s).\137\
---------------------------------------------------------------------------

    \135\ See proposed Rule 22.250(c), which is substantively 
identical to NYSE Arca Options Rule 6.40P-O(c).
    \136\ The time of receipt for an order or quote is the time such 
message is processed by the Exchange's order book.
    \137\ Pre-trade risk controls are implemented prior to an order 
or quote resting on the order book (or being placed on the book 
again following an auction) and therefore do not implicate firm 
quote obligations.
---------------------------------------------------------------------------

    Kill Switch Actions.\138\ Additionally, Options Members may direct 
the Exchange to operate a ``kill switch'' to either cancel all 
unexecuted orders and quotes on the Order Book, block the entry of any 
new order and quote messages, or both.
---------------------------------------------------------------------------

    \138\ See proposed Rule 22.250(e), which is substantively 
identical to NYSE Arca Options Rule 6.40P-O(e).
---------------------------------------------------------------------------

    Limit Order Price Protection.\139\ The Exchange also proposes to 
offer price protection mechanisms, as set forth in proposed Rule 
22.260.\140\ These protections include Limit Order Price Protection, in 
which the System will reject an order or quote upon entry, or cancel at 
the conclusion of an auction, if its price exceeds a pre-established, 
Exchange-defined ``specified threshold'' amount above or below the 
reference price. The Reference Price for calculating Limit Order Price 
Protection for an order or quote to buy (sell) will be the NBO (NBB), 
provided that, immediately following an auction, the reference price 
will be the price at which the auction match occurred, or, if none, the 
upper (lower) auction collar price, or, if none, the NBO (NBB).
---------------------------------------------------------------------------

    \139\ See proposed Rule 22.260(a), which is substantively 
identical to NYSE Arca Options Rule 6.62P-O(a)(3).
    \140\ IEX notes that these proposed risk control mechanisms are 
based on similar rules of other options exchanges, in particular: 
NYSE Arca Options Rules 6.62P-O(a)(3) and 6.41P-O and CBOE Rules 
5.34(a)(1), (2) and (4).
---------------------------------------------------------------------------

    Market Orders in No-Bid (Offer) Series.\141\ If the System receives 
a sell Market order in a series after it is open for trading with an 
NBB of zero and an NBO less than or equal to $0.50, then the System 
converts the Market order to a Limit order with a limit price equal to 
the minimum trading increment applicable to the series and enters the 
order into the IEX Options. If the System receives a sell Market order 
in a series after it is open for trading with an NBB of zero and an NBO 
greater than $0.50, then the System cancels or rejects the Market 
order, except if the sell Market order would be subject to the drill-
through protection (as discussed below), in which case the order joins 
the ongoing drill-through process. If the System receives a buy Market 
order in a series after it is open for trading with an NBO of zero, the 
System cancels or rejects the Market order.
---------------------------------------------------------------------------

    \141\ See proposed Rule 22.260(b), which is substantively 
identical to CBOE Rule 5.34(a)(1).
---------------------------------------------------------------------------

    Market Order NBBO Width Protection.\142\ If a User submits a Market 
order to the System when the NBBO width is greater than x% of the 
midpoint of the NBBO, subject to a minimum and maximum dollar value 
(the Exchange determines ``x'' and the minimum and maximum dollar 
values on a class-by-class basis), the System cancels or rejects the 
Market order.
---------------------------------------------------------------------------

    \142\ See proposed Rule 22.260(c), which is substantively 
identical to CBOE Rule 5.34(a)(2).
---------------------------------------------------------------------------

    Price Reasonability Checks.\143\ Additionally, the Exchange will 
apply price reasonability checks to most Limit orders and quotes during 
continuous trading on each trading day. One price reasonability check, 
the ``arbitrage check,'' will reject order or quote messages to buy put 
options if the price of the order is equal to or greater than the 
strike price of the option and will reject (or cancel, if resting) 
order or quote messages to buy call options if the price of the order 
is equal to or greater than the price of the last trade in the 
underlying security plus an Exchange-defined specified threshold.\144\ 
Another price reasonability check, the ``intrinsic value check,'' will 
assess the intrinsic value of an option based on the last sale price of 
the underlying security (for calls) or the strike price of the option 
(for puts), and reject or cancel certain orders or quotes if the price 
of the order is dislocated from the intrinsic value of the option by a 
certain Exchange-defined specified threshold.\145\
---------------------------------------------------------------------------

    \143\ See proposed Rule 22.260(d), which is substantively 
identical to NYSE Arca Options Rule 6.41P-O.
    \144\ See proposed Rule 22.260(d)(2), which is substantively 
identical to NYSE Arca Options Rule 6.41P-O(b).
    \145\ See proposed Rule 22.260(d)(3), which is substantively 
identical to NYSE Arca Options Rule 6.41P-O(c). IEX notes that like 
NYSE Arca Options, the term ``Automated Breach Action'' is used in 
two of its risk controls with different meanings: first with respect 
to the intrinsic value risk checks for market makers, see NYSE Arca 
Options Rule 6.40P-O(d) and proposed Rule 22.260(d)(3)(E); and also 
with respect to activity based risk controls. See NYSE Arca Options 
Rule 6.41P-O(d) and proposed Rule 22.250(c).
---------------------------------------------------------------------------

    Drill-Through Protection. Another proposed price protection 
mechanism is drill-through protection, which will prevent an order from 
executing beyond a ``buffer amount'' determined based on a drill-
through price.\146\ This rule is based upon and substantially similar 
to CBOE Rule 5.34(a)(4), with the distinction that IEX's Drill-Through 
Protection will have a finite, Exchange-defined number of iterations, 
that are communicated by a Trading Alert with at least 30 days prior 
notice.\147\ IEX notes that other exchanges have also set a finite 
number of iterations for their Drill-Through Protection.\148\
---------------------------------------------------------------------------

    \146\ See proposed Rule 22.260(e).
    \147\ IEX notes that other exchanges also have the ability to 
change any exchange-determined parameters with a trading alert. See, 
e.g., CBOE Rule 1.5.
    \148\ See, e.g., Securities Exchange Act Release No. 86923 
(September 10, 2019), 84 FR 48664 (September 16, 2019) (SR-CBOE-
2019-057) with respect to CBOE's prior functionality.
---------------------------------------------------------------------------

    Options Risk Parameter. In order to address structural challenges 
\149\ that Market Makers face in the listed options market, and thereby 
incentivize deeper and tighter liquidity, IEX proposes to offer an 
optional quote parameter that would augment the standard risk tools 
that will be available to Options Market Makers referred to as the 
Options Risk Parameter, or ORP. Further, IEX believes that in addition 
to mitigating market maker risks from latency arbitrage strategies 
(irrespective of whether spreads tighten), the ORP can also help to 
reduce barriers to entry for market maker participation and thereby 
support competition and reduce market maker concentration risk. This is 
particularly important given the options markets' reliance on market 
maker provision of liquidity. As proposed, the ORP will be a parameter 
that can be applied to a quotation that rests on the Order Book at the 
price designated by the Market Maker that entered the quotation. When 
the ORP is triggered based on pre-defined criteria, the relevant 
quotation(s) will be adjusted or canceled in a manner specified 
transparently in IEX's rules, as described below.\150\
---------------------------------------------------------------------------

    \149\ See infra note 160.
    \150\ See proposed Rule 23.150(h).
---------------------------------------------------------------------------

    The ORP would leverage IEX's proprietary mathematical formula--the

[[Page 26879]]

Options Quote Indicator (the ``Indicator'')--which is based on the 
preeminent Black-Scholes options pricing model. This Nobel-Prize-
winning approach for evaluating the price of an options contract has 
been studied extensively, and is widely considered as a primary 
starting point for both academic and industrial options pricing 
applications.\151\
---------------------------------------------------------------------------

    \151\ See Revolutionary Black-Scholes Option Pricing Model is 
Published by Fischer Black, Later a Partner at Goldman Sachs, 
available at https://www.goldmansachs.com/our-firm/history/moments/1973-black-scholes.
---------------------------------------------------------------------------

    Proposed Rule 23.150(h) sets forth the application of the Indicator 
and optional ORP.\152\ The ORP is designed to enable Market Makers to 
provide tighter and deeper quotes on IEX by providing protection from 
execution against quotes at stale prices by identifying when the best 
Protected Bid or best Protected Offer of the Away Markets (as defined 
in Proposed Rule 22.160(a)(8)) in a particular options series is 
sufficiently dislocated from the price of the underlying security to 
indicate that the best Protected Bid or best Protected Offer of the 
Away Markets in the options series is likely in transition. The 
Exchange believes that the protection provided by the ORP will thus 
enable market makers to provide tighter and deeper quotes on IEX to the 
benefit of all market participants.
---------------------------------------------------------------------------

    \152\ The quote instability calculation is set forth in 
Supplementary Material .04 to proposed Rule 23.150(h); the 
calculation of implied volatility is set forth in Supplementary 
Material .05 to proposed Rule 23.150(h).
---------------------------------------------------------------------------

    The Exchange will determine on a class-by-class basis whether to 
make the ORP available, which determination will be communicated by 
Trading Alert.\153\ This flexibility will therefore allow the Exchange 
to focus its technology resources in an impactful manner to ensure the 
ORP is available for those classes where its use will achieve its 
intended purpose, while excluding its use where it would likely provide 
minimal incremental value (for example, for classes with nonstandard 
characteristics).\154\
---------------------------------------------------------------------------

    \153\ See proposed Rule 23.150(h)(1).
    \154\ The Exchange notes that it is not an equities listing 
exchange. The Exchange does not believe that making class-by-class 
determinations in this context or otherwise creates a conflict of 
interest.
---------------------------------------------------------------------------

    As proposed, the Exchange will utilize the Indicator, which is a 
fixed formula specified transparently in IEX's rules, to assess the 
materiality of an imminent change to the current best Protected Bid 
\155\ of the Away Markets to a lower price or of an imminent change to 
the current best Protected Offer \156\ of the Away Markets to a higher 
price for a particular listed options series (i.e., an imminent adverse 
price change).\157\
---------------------------------------------------------------------------

    \155\ See proposed Rule 28.100(a)(19).
    \156\ Id.
    \157\ See proposed Rule 23.150(h).
---------------------------------------------------------------------------

    The Indicator utilizes real time relative quoting activity of 
protected quotations from Signal Exchanges (as defined in IEX Rule 
11.190(g)) in securities underlying each listed options series and a 
proprietary mathematical calculation (the ``quote instability 
calculation''), as described in more detail below, to assess the impact 
of a price change in the underlying on the price of a particular 
options series. When the quote instability calculation identifies an 
imminent adverse price change to the best Protected Bid and/or best 
Protected Offer of the Away Markets in a particular listed options 
series, it will generate a quote instability determination. A quote 
instability determination may only be generated at least 200 
microseconds after a prior quote instability determination for a 
particular options series on the same side of the market (i.e., 
affecting resting bids or offers). If a quote instability determination 
is generated for an options series quoted by a Market Maker and the 
quote is above (below) the price level of the quote instability 
determination, the quote will be either cancelled or repriced to the 
price level of the quote instability determination, as instructed by 
the Market Maker.
    As proposed, for two aspects of the formula -the Delta Bound Band 
\158\ and the Quote Instability Threshold \159\--the Exchange will 
specify the possible range of values the Exchange may use for each 
aspect as well as the initial value for each aspect. The Exchange may 
determine to change such values, within the applicable specified range, 
based on its assessment of factors that could optimize effectiveness of 
the ORP. In such an event, the Exchange will submit a rule filing 
pursuant to Rule 19b-4(f)(1) under the Exchange Act \160\ (or other 
appropriate rule filing type) specifying the new value, within the 
range of possible values specified in the applicable rule.\161\ Such 
change to a value that falls within the range of possible values would 
constitute an interpretation with respect to the meaning of an existing 
rule, and IEX understands therefore that a filing pursuant to Rule 19b-
4(f)(1) under the Exchange Act would be appropriate. When determining 
to modify values within the specified ranges, the Exchange will 
consider (as relevant) factors such as the distribution of quote 
instability determinations, the precision of quote instability 
determinations, system capacity and performance, fill rates, markout 
data, and client feedback. In modifying a value, the Exchange will aim 
to balance the interests of both liquidity takers and makers.
---------------------------------------------------------------------------

    \158\ See Supplementary Material .04(1)(q) to proposed Rule 
23.150(h). Delta is a key metric in options trading that measures 
the sensitivity of an option's price to changes in the price of the 
underlying asset. As proposed, the Delta Bound Band would restrict 
the ORP from triggering unless the option's Delta is within the 
specified band. The initial value for the Delta Bound Band would be 
between 0--1, with the possible range of values between 0--1.
    \159\ See Supplementary Material .04(2)(e) to proposed Rule 
23.150(h). As proposed, the possible Quote Instability Threshold 
range will be within a range of 0%-100%. If the Quote Instability 
Threshold is set at 100%, the expected change in the NBB/NBO of the 
option resulting from price movement in the underlying must be at 
least 100% of the current value of the NBB/NBO of the option for the 
ORP to trigger. If the Quote Instability Threshold is set at 0%, ORP 
would trigger if there is any expected change to the NBB/NBO of the 
option resulting from price movement in the underlying. As proposed, 
the initial value for the Quote Instability Threshold would be 0.1%. 
When triggered, ORP will only result in the repricing or 
cancellation of quotes if the change to the NBB/NBO of the option 
resulting from price movement in the underlying is to a different 
price level than the current NBB/NBO after rounding to the nearest 
minimum price variation.
    \160\ See 17 CFR 240.19b-4(f)(1). A rule filing pursuant to Rule 
19b-4(f)(1) under the Exchange Act takes effect upon filing with the 
Commission.
    \161\ Should IEX determine that it needs to apply a value that 
falls outside of the range of values that are approved by the 
Commission pursuant to this rule filing and disclosed in the rule 
book, it would seek to change such value via a filing made pursuant 
to either Section 19(b)(3)(A) or Section 19(b)(2) of the Act.
---------------------------------------------------------------------------

    Similarly, as proposed, the frequency of calculation of implied 
volatility, which is used to calculate Delta will be calculated each 
half-hour of system operation.\162\ If the Exchange determines to 
update the implied volatility computation more frequently, based on its 
assessment of relevant factors discussed above that would optimize 
application of the ORP, it will submit a rule filing pursuant to Rule 
19b-4(f)(1) under the Exchange Act (or other appropriate rule filing 
type) specifying the new timing for implied volatility computation.
---------------------------------------------------------------------------

    \162\ See Supplementary Material .05 to proposed Rule 23.150(h).
---------------------------------------------------------------------------

    IEX believes that offering this optional risk protection for market 
makers is particularly important in the options markets where market 
makers are exposed to added risk given their continuous quoting 
obligations. Although equities and options exchanges share a number of 
similarities, a meaningful difference is that in the listed options 
market, liquidity is available only on-exchange and is primarily 
displayed and derived from market maker quotes, and options markets, 
when compared to equities markets, have a much higher quote to

[[Page 26880]]

trade ratio.\163\ Exchange market makers in the listed options market 
play an essential role in providing liquidity. Moreover, given the 
sheer difference in magnitude of tradeable instruments in listed 
options as compared to equities (approximately 1.5 million listed 
options series compared to approximately 11,000 listed equity 
securities), the options exchanges often do not have the same sources 
of natural liquidity of buyers and sellers for each tradeable 
instrument as is generally the case for equities exchanges. Thus, 
options market makers are tasked with affirmative obligations to 
support the provision of liquidity to options exchanges through 
continuous two-sided quotes in large numbers of listed options series. 
As a result, IEX understands that options market makers can be subject 
to excessive risk of one or more quotes being executed at stale prices 
compared to equities market makers or other liquidity providers.\164\ 
Because options market makers maintain hundreds (and sometimes 
thousands) of quotes on options for a given underlying security at any 
one time, a sudden market move in the underlying security can leave an 
options market maker vulnerable to being executed across multiple 
quotes that are stale and dislocated from the price of the underlying 
securities. Liquidity takers engaged in latency arbitrage can target 
one or more of these quotes at stale prices, with limited risk should 
they fail to execute (i.e., lost opportunity vs. trading at a stale 
price), before the Market Makers are able to move their quotes (often 
hundreds or more for a given underlying) to reflect the price change in 
the underlying securities, thereby exposing those Market Makers to 
potentially major losses. IEX understands that incurring such losses 
over time reduces a market maker's willingness to provide narrow and 
deep quotes, which decreases liquidity and price discovery in the 
market. Moreover, to the extent that such losses result in market 
making firms being less profitable (or unprofitable), they may cease 
market making activity or limit the options classes in which they 
compete, which can, over time, decrease competition and increase market 
maker concentration. IEX believes that by providing incremental risk 
reduction, the ORP could help to counter these impacts.\165\
---------------------------------------------------------------------------

    \163\ See Staff Report on Equity and Options Market Structure 
Conditions in Early 2021 (Oct. 14, 2021) at 4 (explaining that 
options market structure is broadly similar to equities market 
structure and noting a key difference that displayed liquidity is 
primarily derived from market maker quotes), available at https://www.sec.gov/files/staff-report-equity-options-market-struction-conditions-early-2021.pdf; see also Lehoczky, Sandor and Woods, 
Ellen and Russell, Matthew and Nguyen, Mina and Somers, James, Dead 
Man's Switch: Making Options Markets Safer with Active Quote 
Protection (May 2020) (``Dead Man's Switch''), at 2 (explaining that 
options markets ``depend especially on market makers--who account 
for 99.9% of open orders--to connect buyers and sellers, due to a 
combinatorial explosion of expirations and strike prices'').
    \164\ See, e.g., Protecting Liquidity in Options Markets, Market 
Structure, Optiver, July 12, 2023 (``Protecting Liquidity''), 
(concluding that ``liquidity protection improves options markets'' 
by safeguarding market makers against ``excessive risk'' that 
results from ``liquidity providers maintain[ing] hundreds of quotes 
on a given underlying at any one time [and] a sudden market move can 
leave them vulnerable to showing stale, or outdated, quotes,'' 
thereby ``exposing them to potentially major losses'' if unable to 
amend or cancel quotes before executed), available at https://optiver.com/insights/protecting-liquidity-in-options-markets/.
    \165\ IEX notes that such trends have been in place for some 
time. See, e.g., Joint letter from CBOE, SIFMA and The STA to Brett 
Redfearn (Director, Division of Trading and Markets, Commission) 
dated June 4, 2018, available at 
Cboe_Joint_Letter_with_SIFMA_and_The_STA_on_Options_Market_Structure.
pdf, noting that ``. . .[i]n particular over the past several years, 
there has been wide discussion in the options industry regarding 
market metrics and it has been shown that quoted liquidity has 
decreased and spreads have widened. Further many market makers have 
consolidated their businesses, reduced their participation, or 
stopped making options markets entirely--there are approximately 
half as many registered market makers actively participating in the 
U.S. options markets than there were five years ago. This trend 
obviously has impacted market quality in the U.S. options markets.''
---------------------------------------------------------------------------

    More specifically, as discussed above, traders using these specific 
strategies can leverage technological and speed advantages to identify 
when options prices are in transition and react in microseconds before 
others and rapidly execute against resting orders at outdated, stale 
prices, before those orders can be modified or cancelled to reflect 
updated market conditions, and before others have a fair opportunity to 
adjust them. However, these technological and speed advantages are 
expensive and challenging to achieve and maintain, and therefore not 
readily available to all market participants. The optional ORP is 
designed to augment these risk protections with a transparent, rules-
based formula that identifies when a market maker's quote is clearly 
mispriced based on a price change in the underlying security and 
reprice or cancel the quote in a manner with effects that are 
predictable to both market makers and other participants, who expect 
the price of an option to change in response to a material change in 
price of the underlying security because options are derivative 
securities whose prices are based in part on the price of their 
underlying security.
    Without robust liquidity protection mechanisms to protect against 
these risks, market makers may be forced to widen their spreads, show 
less liquidity, or simply exit the market. Overall market quality could 
deteriorate as a result, and investors would suffer when it becomes too 
expensive to transact, or when there is insufficient liquidity to 
enable transacting altogether. Accordingly, liquidity protection 
mechanisms for market makers, which all options exchanges offer, and 
IEX proposes to offer, are vital for achieving a healthy balance 
between market makers and liquidity takers in the listed options 
market. These include, but are not limited to, activity-based risk 
controls, price reasonability checks, and functionality (such as bulk 
quoting and purge ports) to facilitate timely quoting, quote updates, 
and quote cancellation.
    For each options series, the System will maintain a real-time 
estimate of the sensitivity of the series to changes in the midpoint of 
the best Protected Bid and best Protected Offer of the Signal Exchanges 
for the underlying security (based on a Black-Scholes assessment). When 
there is a change in the best Protected Bid or best Protected Offer of 
the Signal Exchanges for the underlying security, the System will use 
the quote instability calculation formula set forth in proposed IEX 
Rule 23.150(h) to calculate whether to generate a quote instability 
determination for each options series overlying the underlying 
security. The System independently assesses whether to generate a quote 
instability determination affecting resting bids or offers for each 
options series. A quote instability determination is generated by the 
System when, pursuant to the quote instability calculation, the quote 
instability factor is greater than the defined Quote Instability 
Threshold and the delta absolute value is within the Delta Bound 
Band.\166\ As proposed, the Delta Bound Band would be uniformly applied 
across all options in order to more narrowly tailor deployment of the 
ORP to options series at the greatest risk of adverse selection based 
on the Exchange's assessment of relevant factors.
---------------------------------------------------------------------------

    \166\ See discussion supra on how modifications to these values 
will be made.
---------------------------------------------------------------------------

    If a Market Maker has opted to utilize the ORP and its quote in an 
options series that was the subject of a quote instability 
determination is at or above (below) the price level of the quote 
instability determination the System will either cancel the Market 
Maker's quote or reprice it to the price level of the quote instability 
determination,

[[Page 26881]]

pursuant to the Market Maker's instruction.\167\ Regardless of whether 
it chooses to use the ORP, a Market Maker will be able to adjust the 
price of its quote in the same manner as other Market Makers' quotes 
that have not opted to use the ORP.\168\
---------------------------------------------------------------------------

    \167\ See proposed Rule 23.150(h)(1)(c).
    \168\ The Exchange will comply with Consolidated Audit Trail 
reporting requirements in accordance with applicable technical 
specifications.
---------------------------------------------------------------------------

    One Second Exposure Period. Proposed Rule 23.200 would require 
Options Members to expose their customers' orders on the Exchange for 
at least one second under certain circumstances before trading against 
such orders. During this one second exposure period, other Options 
Members will be able to enter orders to trade against the exposed 
order. In adopting a one second order exposure period, the Exchange is 
proposing a requirement that is consistent with the rules of other 
options exchanges.\169\ Thus, the exposure period will allow Options 
Members that are members of other options exchanges to comply with 
proposed Rule 23.200 without programming separate time parameters into 
their systems for order entry or compliance purposes. The Exchange 
believes that market participants are sufficiently automated that a one 
second exposure period allows an adequate time for market participants 
to electronically respond to an order. Also, it is possible that market 
participants might wait until the end of the exposure period, no matter 
how long, before responding. Thus, the Exchange believes that any 
longer than one second would not further the protection of investors or 
market participants, but rather, would potentially increase market risk 
to investors and other market participants by creating a longer period 
of time for the exposed order to be subject to market risk.
---------------------------------------------------------------------------

    \169\ See, e.g., MEMX Rule 22.11; CBOE Rule 5.9; and MIAX 
Options Rule 520(b).
---------------------------------------------------------------------------

Options Order Protection and Locked/Crossed Market Plan Rules
    The Exchange will participate in the Options Order Protection and 
Locked/Crossed Market Plan (the ``Plan''),\170\ and therefore will be 
required to comply with the obligations of Participants under the Plan. 
The Exchange proposes to adopt rules relating to the Plan that are 
substantially similar to the rules in place on all of the options 
exchanges that are Participants to the Plan. The Plan essentially 
applies the Regulation NMS price-protection provisions to the options 
markets. Similar to Regulation NMS, the Plan requires the Plan 
Participants to adopt rules ``reasonably designed to prevent Trade-
Throughs'', while exempting ISOs from that prohibition. The Plan's 
definition of an ISO is essentially the same as under Regulation NMS. 
The remaining exceptions to the trade-through prohibition, discussed 
more specifically below, either track those under Regulation NMS or 
correspond to unique aspects of the options market, or both.
---------------------------------------------------------------------------

    \170\ See supra note 85.
---------------------------------------------------------------------------

    The proposed rules in Chapter 28 (Options Order Protection and 
Locked and Crossed Markets Rules) conform to the requirements of the 
Plan. Proposed Rule 28.100 sets forth the defined terms for use under 
the Plan. Proposed Rule 28.110 prohibits trade-throughs and exempts 
ISOs from that prohibition. Proposed Rule 28.110 also contains 
additional exceptions to the trade-through prohibition that track the 
exceptions under Regulation NMS or correspond to unique aspects of the 
options market, or both.
    Proposed Rule 28.120 sets forth the general prohibition against 
locking/crossing other eligible exchanges as well as certain enumerated 
exceptions that permit locked markets in limited circumstances; such 
exceptions have been approved by the Commission for inclusion in the 
rules of other options exchanges. Specifically, the exceptions to the 
general prohibition on locking and crossing occur when: (1) the locking 
or crossing quotation was displayed at a time when the Exchange was 
experiencing a failure, material delay, or malfunction of its systems 
or equipment; (2) the locking or crossing quotation was displayed at a 
time when there is a Crossed Market; (3) the Options Member 
simultaneously routed an ISO to execute against the full displayed size 
of any locked or crossed Protected Bid or Protected Offer; or (4) with 
respect to a locking quotation, the order entered on the Exchange that 
will lock a Protected Bid or Protected Offer, is: (i) not a Customer 
order, and the Exchange can determine via identification available 
pursuant to the OPRA Plan that such Protected Bid or Protected Offer 
does not represent, in whole or in part, a Customer order; or (ii) a 
Customer order, and the Exchange can determine via identification 
available pursuant to the OPRA Plan that such Protected Bid or 
Protected Offer does not represent, in whole or in part, a Customer 
order, and, on a case-by-case basis, the Customer specifically 
authorizes the Member to lock such Protected Bid or Protected 
Offer.\171\
---------------------------------------------------------------------------

    \171\ See proposed Rule 28.120(b).
---------------------------------------------------------------------------

    The Exchange notes that the proposed rules in Chapter 28 (Options 
Order Protection and Locked and Crossed Markets Rules) are 
substantively identical to the rules of MEMX Options.\172\
---------------------------------------------------------------------------

    \172\ See MEMX Rule 27.1, 27.2, and 27.3.
---------------------------------------------------------------------------

Securities Traded on IEX Options
    General Listing Standards. The Exchange proposes to adopt listing 
standards for options traded on IEX Options as described in Chapter 20 
(Securities Traded on IEX Options), which are substantively identical 
to the equivalent MEMX Options rules,\173\ with the exception of: (i) 
some language in Supplementary Material .02 to proposed Rule 20.140 
concerning the $1 strike price program which is not included in the 
equivalent MEMX rule, and therefore borrowed from the equivalent MIAX 
rule; \174\ and (ii) the addition of language allowing the Exchange to 
list for closing transactions an Options series that is listed but 
restricted to closing transactions on another exchange.\175\ The 
Exchange will join the Options Listings Procedures Plan and will list 
and trade options already listed on other options exchanges. The 
Exchange will gradually phase-in its trading of options, beginning with 
a selection of actively traded options.
---------------------------------------------------------------------------

    \173\ See MEMX Rules, Chapter 19. IEX notes that the MEMX Rules 
include Chapter 29: Index Rules. IEX is not proposing to adopt 
similar rules at this time, and any references to index options in 
MEMX Chapter 19 are not in proposed IEX Chapter 20.
    \174\ See MIAX Rule 404 Interpretation and Policy .01.
    \175\ See Supplementary Material .01 to proposed Rule 20.130, 
which mirrors MIAX Rule 403 Interpretation and Policy .01.
---------------------------------------------------------------------------

Conduct and Operational Rules for Options Members
    The Exchange proposes to adopt rules in Chapter 19 for IEX Options 
that are substantively identical to the rules of MEMX Options 
regarding: exercises and deliveries as described in Chapter 24 
(Exercises and Deliveries); records, reports and audits as described in 
Chapter 25 (Records, Reports and Audits); minor rule violations as 
described in Chapter 26 (Discipline and Summary Suspensions); doing 
business with the public as described in Chapter 27 (Doing Business 
With the Public); and margin as described in Chapter 29 (Margin 
Requirements).\176\ The Exchange also proposes to adopt rules that are 
substantively similar to most of MEMX's Chapter 18 (Business Conduct), 
with the exception of proposed Rules 19.160 (Position Limits), 19.170

[[Page 26882]]

(Exemptions from Position Limits), 19.180 (Exercise Limits) that are 
substantively similar to MIAX Rules 307, 308, and 309, 
respectively.\177\ IEX proposed to adopt MIAX's versions of these rules 
because they provided specificity about the types of position limits 
the Exchange will apply to Options Members (as opposed to the MEMX 
rules, which rely on position limits set by other exchanges).
---------------------------------------------------------------------------

    \176\ See MEMX Rules, Chapters 23, 24, 25, 26 and 28.
    \177\ The Exchange also proposes to adopt provisions comparable 
to CBOE Rule 8.30 Interpretation .03(c)(4) in proposed Rule 
19.160(f)(2)(D) (regarding control for purposes aggregating 
positions held by different accounts for purposes of applying the 
position limit rules) and CBOE Rule 8.30 Interpretation .09 in 
Supplementary Material .03 to proposed Rule 19.160 (regarding 
aggregation of positions in options contacts on the same underlying 
security for purposes of position limit rules).
---------------------------------------------------------------------------

National Market System
    IEX Options will operate as a full and equal participant in the 
national market system for options trading established under Section 
11A of the Exchange Act.\178\ IEX Options will become a member of the 
Options Price Reporting Authority (``OPRA''), the Options Order 
Protection and Locked/Crossed Market Plan, the Options Regulatory 
Surveillance Authority (``ORSA''), and the Options Listing Procedures 
Plan (``OLPP''). The Exchange expects to participate in those plans on 
the same terms currently applicable to current members of those plans. 
The Exchange is in the process of contacting the leadership of each 
options-related national market system plan to begin the membership 
process.
---------------------------------------------------------------------------

    \178\ 15 U.S.C. 78k-1.
---------------------------------------------------------------------------

Regulation
    The Exchange will leverage many of the structures it established to 
operate a national securities exchange trading NMS equities securities, 
in compliance with Section 6 of the Exchange Act.\179\ As described in 
more detail below, there will be three elements of that regulation: (1) 
the Exchange will join the existing options industry agreements 
pursuant to Section 17(d) of the Exchange Act prior to commencing 
operations,\180\ as it did with respect to equities; (2) the Exchange's 
Regulatory Services Agreement (``RSA'') with FINRA will be amended 
prior to commencing operations to provide that FINRA will perform 
regulatory surveillance, investigation, disciplinary and hearing 
services of options trading on IEX subject to oversight by IEX 
Regulation, just as it does for equities regulation; and (3) the 
Exchange will perform options listing regulation, as well as authorize 
Options Members to trade on IEX Options. Section 17(d) of the Exchange 
Act and the related Exchange Act rules permit SROs to allocate certain 
regulatory responsibilities to avoid duplicative oversight and 
regulation. Under Exchange Act Rule 17d-1,\181\ the SEC designates one 
SRO to be the Designated Examining Authority, or DEA, for each broker-
dealer that is a member of more than one SRO. The DEA is responsible 
for the financial aspects of that broker-dealer's regulatory oversight. 
Because IEX Options Members also must be members of at least one other 
SRO, the Exchange would generally not expect to be designated as the 
DEA for any of its members.\182\
---------------------------------------------------------------------------

    \179\ 15 U.S.C. 78f.
    \180\ 15 U.S.C. 78q(d).
    \181\ 17 CFR 240.17d-1.
    \182\ If IEX were to be designated as the DEA for any of its 
members, FINRA would perform the DEA functions on behalf of IEX 
pursuant to the RSA.
---------------------------------------------------------------------------

    Exchange Act Rule 17d-2 \183\ permits SROs to file with the 
Commission plans under which the SROs allocate among each other the 
responsibility to receive regulatory reports from, and examine and 
enforce compliance with specified provisions of the Exchange Act and 
rules thereunder and SRO rules by, firms that are members of more than 
one SRO (``common members''). If such a plan is declared effective by 
the Commission, an SRO that is a party to the plan is relieved of 
regulatory responsibility as to any common member for whom 
responsibility is allocated under the plan to another SRO.
---------------------------------------------------------------------------

    \183\ 17 CFR 240.17d-2.
---------------------------------------------------------------------------

    All of the options exchanges, FINRA, and NYSE have entered into the 
Options Sales Practices Agreement, a Rule 17d-2 agreement, and the 
Exchange intends to join this agreement prior to the commencement of 
operations for IEX Options. Under this Agreement, the examining SROs 
will examine firms that are common members of the Exchange and the 
particular examining SRO for compliance with certain provisions of the 
Exchange Act, certain of the rules and regulations adopted thereunder, 
certain examining SRO rules, and certain proposed IEX Options rules. In 
addition, the proposed IEX Options rules contemplate participation in 
this Agreement by requiring that any Options Member also be a member of 
at least one of the examining SROs. The Exchange and FINRA are also 
party to a bilateral Rule 17d-2 agreement that requires minor 
modifications due to the proposed launch of IEX Options. The Exchange 
intends to modify and seek Commission approval of the modified 
bilateral Rule 17d-2 agreement prior to commencing of operations for 
IEX Options. Additionally, all of the options exchanges and FINRA have 
entered into the Options-Related Market Surveillance Agreement, a Rule 
17d-2 agreement, and the Exchange intends to join this agreement prior 
to the commencement of operations for IEX Options.
    For those regulatory responsibilities that fall outside the scope 
of any Rule 17d-2 agreements, the Exchange will retain full regulatory 
responsibility under the Exchange Act. However, the Exchange has 
entered into an RSA with FINRA, as discussed above, pursuant to which 
FINRA personnel operate as agents for the Exchange in performing 
certain of these functions. The Exchange and FINRA will continue to 
operate under the RSA that is currently in place but with modifications 
as necessary to accommodate the expanded scope of the relationship. The 
necessary modifications will be implemented prior to the commencement 
of operations of IEX Options. As is the case with the Exchange's 
equities market, the Exchange will oversee FINRA and continue to bear 
ultimate regulatory responsibility with respect to regulatory functions 
not subject to allocation to FINRA or another SRO pursuant to a Rule 
17d-2 Agreement for the IEX Options Exchange.
    Consistent with the Exchange's existing regulatory structure, the 
Exchange's Chief Regulatory Officer, reporting to the Regulatory 
Oversight Committee of the Exchange's board of directors, shall have 
general supervision of the regulatory operations of IEX Options, 
including responsibility for overseeing the surveillance, examination, 
and enforcement functions and for administering all regulatory services 
agreements applicable to IEX Options. Similarly, the Exchange's 
existing Regulatory Oversight Committee will be responsible for 
overseeing the adequacy and effectiveness of Exchange's regulatory and 
self-regulatory organization responsibilities, including those 
applicable to IEX Options.
    As it does with equities, the Exchange will monitor trading on IEX 
Options, both through internal reports and FINRA surveillances for the 
purpose of maintaining a fair and orderly market. As it does with its 
equities trading, the Exchange will monitor IEX Options to identify 
unusual trading patterns and determine whether particular trading 
activity requires further regulatory investigation by FINRA.
    Finally, the Exchange will oversee the process for determining and

[[Page 26883]]

implementing trade halts, identifying and responding to unusual market 
conditions, and administering the Exchange's process for identifying 
and remediating ``obvious errors'' by and among its Options 
Members.\184\ The proposed rules in Chapter 21 (Regulation of Trading 
on IEX Options) regarding halts,\185\ unusual market conditions, 
extraordinary market volatility, obvious errors, audit trail, and rules 
regarding prohibited and permissible transfers of options positions off 
the Exchange are substantively identical to the approved rules of MEMX 
Options.\186\
---------------------------------------------------------------------------

    \184\ IEX notes that, like MEMX Rule 20.6, proposed Rule 21.150 
authorizes the proposed Error Panel to review decisions made under 
this rule, which includes decisions to classify a transaction as a 
Catastrophic Error.
    \185\ Proposed Rule 21.120(b) states that during a trading halt, 
the Exchange shall process new and existing orders and quotes in a 
series in accordance with proposed Rule 22.160(g). Proposed Rule 
22.160(g), which is substantively identical to NYSE Arca Options 
Rule 6.64P-O(g), states that during a trading halt, the Exchange 
will cancel all resting Market Maker quotes.
    \186\ See MEMX Rules, Chapter 20.
---------------------------------------------------------------------------

Minor Rule Violation Plan
    The Exchange's disciplinary rules, including Exchange Rules 
applicable to ``minor rule violations,'' are set forth in Chapter 9 of 
the Exchange's current Rules. Such disciplinary rules will apply to 
Options Members and their associated persons.
    The Commission approved the Exchange's Minor Rule Violation Plan 
(``MRVP'') in 2016.\187\ The Exchange's MRVP specifies the uncontested 
minor rule violations that are included in the MRVP and have sanctions 
not exceeding $2,500. Any violations that are resolved under the MRVP 
would not be subject to the provisions of Rule 19d-1(c)(1) under the 
Act \188\ requiring that an SRO promptly file notice with the 
Commission of any final disciplinary action taken with respect to any 
person or organization.\189\ The Exchange's MRVP includes the policies 
and procedures included in Exchange Rule 9.216(b) and the violations 
included in Rule 9.218.
---------------------------------------------------------------------------

    \187\ See Securities Exchange Act Release No. 78474 (August 3, 
2016), 81 FR 52717 (August 9, 2016) (Order Declaring Effective a 
Minor Rule Violation Plan) (File No. 4-701).
    \188\ 17 CFR 240.19d-1(c)(1).
    \189\ The Commission adopted amendments to paragraph (c) of Rule 
19d-1 to allow SROs to submit for Commission approval plans for the 
abbreviated reporting of minor disciplinary infractions. See Release 
No. 34-21013 (June 1, 1984), 49 FR 23828 (June 8, 1984). Any 
disciplinary action taken by an SRO against any person for violation 
of a rule of the SRO which has been designated as a minor rule 
violation pursuant to such a plan filed with and declared effective 
by the Commission will not be considered ``final'' for purposes of 
Section 19(d)(1) of the Act if the sanction imposed consists of a 
fine not exceeding $2,500 and the sanctioned person has not sought 
an adjudication, including a hearing, or otherwise exhausted his 
administrative remedies.
---------------------------------------------------------------------------

    Under Rule 9.216(b), the Exchange may impose a fine (not to exceed 
$2,500) and/or a censure on any Member or associated person with 
respect to any rule listed in IEX Rule 9.218. If the FINRA Department 
of Enforcement or the Department of Market Regulation, on behalf of the 
Exchange, has reason to believe a violation has occurred and if the 
Member or associated person does not dispute the violation, the 
Department of Enforcement or the Department of Market Regulation may 
prepare and request that the Member or associated person execute a 
minor rule violation plan letter accepting a finding of violation, 
consenting to the imposition of sanctions, and agreeing to waive the 
Member's or associated person's right to a hearing before a Hearing 
Panel or, if applicable, an Extended Hearing Panel, and any right of 
appeal to the IEX Appeals Committee, the Board, the Commission, and the 
courts, or to otherwise challenge the validity of the letter, if the 
letter is accepted. The letter must describe the act or practice 
engaged in or omitted, the rule, regulation, or statutory provision 
violated, and the sanction or sanctions to be imposed. Unless the 
letter states otherwise, the effective date of any sanction imposed 
will be a date to be determined by IEX Regulation staff. In the event 
the letter is not accepted by the Member or associated person, or is 
rejected by the Office of Disciplinary Affairs, the matter can proceed 
in accordance with the Exchange's disciplinary rules, which include 
hearing rights for formal disciplinary proceedings.
    The Exchange proposes to amend its MRVP and Exchange Rule 9.218 to 
add certain rules relating to Options as set forth in proposed Rule 
26.120 (Penalty for Minor Rule Violations) to the list of rules 
eligible for Minor Rule Violation Plan treatment.\190\ The rules 
included in proposed Rule 26.120, as appropriate for disposition under 
the Exchange's MRVP, are: (a) position limit and exercise limit 
violations; (b) violations regarding the failure to accurately report 
position and account information; (c) Market Maker quoting obligations; 
(d) violations regarding expiring exercise declarations; (e) violations 
relating to the failure to respond to the Exchange's requests for the 
submission of trade data; and (f) violations relating to noncompliance 
with the Consolidated Audit Trail Compliance Rule requirements. The 
rule violations included in proposed Rule 26.120 are the same as the 
rule violations included in the MRVPs of other options exchanges.\191\
---------------------------------------------------------------------------

    \190\ In its proposal to adopt the MRVP, the Exchange requested 
that, going forward, to the extent that there are any changes to the 
rules applicable to the Exchange's MRVP, the Exchange requests that 
the Commission deem such changes to be modifications to the 
Exchange's MRVP.
    \191\ See, e.g., MEMX Rules, Chapter 25.
---------------------------------------------------------------------------

    Upon implementation of this proposal, the Exchange will include 
violations of the enumerated options trading rules, if any, in an 
applicable Exchange's quarterly report of any actions taken on minor 
rule violations under the MRVP.\192\ A quarterly report would include: 
the Exchange's internal file number for the case, the name of the 
individual and/or organization, the nature of the violation, the 
specific rule provision violated, the sanction imposed, the number of 
times the rule violation has occurred, and the date of disposition. The 
Exchange's MRVP, as proposed to be amended herein, is consistent with 
Sections 6(b)(1), 6(b)(5) and 6(b)(6) of the Act, which require, in 
part, that an exchange have the capacity to enforce compliance with, 
and provide appropriate discipline for, violations of the rules of the 
Commission and of the exchange, 6(b)(6) provides that members and 
persons and associated members shall be appropriately disciplined for 
violation of the provisions of the rules of the exchange, by expulsion, 
suspension, limitation of activities, functions and operations, fine, 
censure, being suspended or barred from being associated with a member, 
or any other fitting sanction.\193\ Rule violations listed in proposed 
Rule 26.120 are minor in nature and will be more appropriately 
disciplined through the Exchange's MRVP and therefore proposes to add 
them to the list of rules eligible for minor rule fine disposition.
---------------------------------------------------------------------------

    \192\ To date, the Exchange has not taken any minor rule 
violation actions.
    \193\ 15 U.S.C. 78f(b)(1), 78f(b)(5) and 78f(b)(6).
---------------------------------------------------------------------------

    In addition, because Rule 9.216(b) offers procedural rights to a 
person sanctioned for a violation listed in proposed Rule 26.120, the 
Exchange will provide a fair procedure for the disciplining of members 
and associated persons, consistent with Section 6(b)(7) of the 
Act.\194\
---------------------------------------------------------------------------

    \194\ 15 U.S.C. 78f(b)(7). Rule 9.216(b) does not preclude an 
Options Member or person associated with an Options Member from 
contesting an alleged violation and receiving a hearing on the 
matter with the same procedural rights through a litigated 
disciplinary proceeding.
---------------------------------------------------------------------------

    This proposal to include the rules listed in proposed Rule 26.120 
in the Exchange's MRVP is consistent with the

[[Page 26884]]

public interest, the protection of investors, or otherwise in 
furtherance of the purposes of the Act, as required by Rule 19d-1(c)(2) 
under the Act,\195\ because it should strengthen the Exchange's ability 
to carry out its oversight and enforcement responsibilities as an SRO 
in cases where full disciplinary proceedings are unsuitable in view of 
the minor nature of the particular violation. In requesting the 
proposed change to the MRVP, the Exchange in no way minimizes the 
importance of compliance with Exchange Rules and all other rules 
subject to the imposition of fines under the MRVP. Minor rule fines 
provide a meaningful sanction for minor or technical violations of 
rules when the conduct at issue does not warrant stronger, immediately 
reportable disciplinary sanctions. The inclusion of a rule in the 
Exchange's MRVP does not minimize the importance of compliance with the 
rule, nor does it preclude the Exchange from choosing to pursue 
violations of eligible rules through the Exchange's disciplinary rules 
if the nature of the violation or prior disciplinary history warrants 
more significant sanctions. However, the MRVP provides a reasonable 
means of addressing rule violations that do not rise to the level of 
requiring formal disciplinary proceedings, while providing greater 
flexibility in handling certain violations.\196\ The Exchange will 
continue to conduct surveillance with due diligence and make a 
determination based on its findings, on a case-by-case basis, whether a 
fine of more or less than the recommended amount is appropriate for a 
violation under the MRVP or whether a violation requires a formal 
disciplinary action.
---------------------------------------------------------------------------

    \195\ 17 CFR 240.19d-1(c)(2).
    \196\ See supra note 188 and accompanying text.
---------------------------------------------------------------------------

Section 36 Exemption Request
    The Exchange proposes to incorporate by reference as IEX Options 
rules certain rules of the Cboe Exchange, Inc. (``CBOE''), the New York 
Stock Exchange (``NYSE''), and FINRA. Specifically, proposed Rule 
27.250 proposes to incorporate by reference the applicable rules of 
FINRA with respect to Communications with Public Customers, and 
proposed Rule 29.120 proposes to incorporate by reference initial and 
maintenance margin requirements of either CBOE or NYSE. Thus, for 
certain IEX Options rules, Exchange members will comply with a IEX 
Options rule by complying with the CBOE, NYSE, or FINRA rule 
referenced. Using its authority under Section 36 of the Act, the 
Commission has previously exempted certain SROs from the requirement to 
file proposed rule changes under Section 19(b) of the Act when 
incorporating another SRO's rules by reference.\197\ Each such exempt 
SRO has agreed to be governed by the incorporated rules, as amended 
from time to time, but, has not been required to file a separate 
proposed rule change with the Commission each time the SRO whose rules 
are incorporated by reference seeks to modify its rules. In addition, 
each SRO incorporated by reference only regulatory rules (e.g., margin, 
suitability, arbitration), not trading rules, and incorporated by 
reference whole categories of rules (i.e., did not ``cherry-pick'' 
certain individual rules within a category). Last, each exempt SRO had 
reasonable procedures in place to provide written notice to its members 
each time a change is proposed to the incorporated rules of another SRO 
in order to provide its members with notice of a proposed rule change 
that affects their interests, so that they would have an opportunity to 
comment on it.
---------------------------------------------------------------------------

    \197\ See, e.g., Securities Exchange Act Release No. 49260 
(February 17, 2004), 69 FR 8500 (February 24, 2004). See also 
Securities Exchange Act Release Nos. 57478 (March 12, 2008), 73 FR 
14521, 14539-40 (March 18, 2008) (order approving SR-NASDAQ-2007-004 
and SR-NASDAQ-2007-080) and 53128 (January 13, 2006), 71 FR 3550, 
3565-66 (January 23, 2006) (File No. 10-131) (approving The NASDAQ 
Stock Market LLC's exchange application).
---------------------------------------------------------------------------

    In connection with this proposal, the Exchange respectfully 
requests, pursuant to Rule 240.0-12 under the Act,\198\ an exemption 
under Section 36 of the Act from the rule filing requirements of 
Section 19(b) of the Exchange Act for changes to those IEX Options 
rules that are effected solely by virtue of a change to a cross-
referenced CBOE, NYSE, or FINRA rule. The Exchange proposes to 
incorporate by reference categories of rules (rather than individual 
rules within a category) that are not trading rules. The Exchange also 
agrees to provide written notice to Options Members prior to the launch 
of IEX Options of the specific CBOE, NYSE, and FINRA rules that it will 
incorporate by reference. In addition, the Exchange will notify Options 
Members whenever CBOE, NYSE, or FINRA proposes a change to a cross-
referenced CBOE, NYSE, or FINRA rule.\199\ For the foregoing reasons, 
the Exchange believes that its request for exemptive relief is 
consistent with prior requests for, and provision of, similar exemptive 
relief.
---------------------------------------------------------------------------

    \198\ 17 CFR 240.0-12.
    \199\ The Exchange will provide such notice through a posting on 
the same website location where the Exchange will post its own rule 
filings pursuant to Rule 19b-4(f)(l) under the Exchange Act (or 
other appropriate rule filing type), within the time frame required 
by that rule. The website posting will include a link to the 
location on the CBOE, NYSE, or FINRA websites where the proposed 
rule change is posted.
---------------------------------------------------------------------------

Amendments to Existing Exchange Rules
    In addition to the rules of IEX Options proposed above, the 
Exchange proposes to amend certain of its existing Exchange Rules that 
currently apply to the Exchange's equities market in order to reflect 
the Exchange's proposed operation of IEX Options.
    First, the Exchange proposes to amend Rule 2.160(i), which 
generally requires each Member to register at least two Principals with 
the Exchange subject to certain exceptions described therein, to 
provide that such paragraph (i) shall not apply to a Member that solely 
conducts business on the Exchange as an Options Member, however, 
Options Members must comply with the registration requirements set 
forth in proposed Rule 18.110. The Exchange notes that proposed Rule 
18.110(h), which provides that every Options Member shall have at least 
one Options Principal and sets forth the Exchange's Options Principal 
registration requirements, is identical to MEMX Rule 17.2(g). In 
connection with this proposed change, the Exchange also proposes to 
amend Rule 2.160(n) to include Options Principal as a registration 
category and to set forth the Exchange's qualification requirements for 
an Options Principal, which are the same as those for an Options 
Principal on MEMX Options. Additionally, the Exchange proposes to amend 
Rule 2.160(p)(a)(4) to set forth the appropriate regulatory element 
continuing education module for reregistration as an Options Principal.
    The Exchange also proposes to make three modifications to Rule 
2.220 (IEX Services LLC as Outbound Router). First, IEX proposes to 
remove the word ``directly'' from the first sentence of subparagraph 
(a), because IEX Services will continue to route orders to away 
markets, but as described above, with respect to options routing, it 
will not route those order ``directly'' to the away markets. Second, 
consistent with the first change, IEX proposes to insert a new second 
sentence in subparagraph (a) that reads: ``When routing options orders, 
as set forth in proposed Rule 22.180, IEX Services will transmit such 
orders to one or more routing brokers that are not affiliated with the 
Exchange; the routing brokers will in turn route the applicable options 
orders to other

[[Page 26885]]

securities exchanges that trade options.'' IEX proposes to make this 
change to reflect the different nature of how IEX Services will handle 
routing options orders from equities orders. And third, IEX proposes to 
modify subparagraph (a)(8) of this rule, which states that IEX Services 
shall maintain an error account for the purpose of addressing positions 
that are the result of an execution or executions that are not clearly 
erroneous under Rule 11.270 and result from a technical or systems 
issue at IEX Services, the Exchange, a routing destination, or a non-
affiliate third-party routing broker that affects one or more orders 
(``Error Positions''). The proposed change to Rule 2.220(a)(8) would 
add a reference to the comparable provision to that which governs 
review and resolution of clearly erroneous equities transactions (i.e., 
Rule 11.270) but for options transactions, namely proposed Rule 21.150, 
which governs review and resolution of options transactions that may 
qualify as obvious errors.
    The Exchange also proposes to adopt Rule 21.220 (Limitation of 
Liability), which is almost identical to the Rule 11.260, the 
Limitation of Liability rule in IEX's equities trading rules. The only 
difference is to reflect that proposed Rule 21.220 applies to IEX 
Options and options trading.
    Lastly, the Exchange proposes to amend Rule 9.218 (Violations 
Appropriate for Disposition Under Plan Pursuant to Exchange Act Rule 
19d-1(c)(2)), which contains the list of Exchange Rule violations and 
recommended fine schedule, to include a new paragraph (k) referencing 
proposed Rule 26.120 for the recommended fines for minor rule 
violations of the Exchange Rules appliable to IEX Options, which the 
Exchange notes are the same as those of MEMX Options.
2. Statutory Basis
    The Exchange believes that the proposed rule change is consistent 
with Section 6(b) of the Act \200\ in general, and furthers the 
objectives of Section 6(b)(5) of the Act \201\ in particular, in that 
it is designed to prevent fraudulent and manipulative acts and 
practices, to promote just and equitable principles of trade, to foster 
cooperation and coordination with persons engaged in regulating, 
clearing, settling, processing information with respect to, and 
facilitating transactions in securities, to remove impediments to and 
perfect the mechanism of a free and open market and a national market 
system, and, in general, to protect investors and the public interest; 
and is not designed to permit unfair discrimination between customers, 
issuers, brokers, or dealers.
---------------------------------------------------------------------------

    \200\ 15 U.S.C. 78f(b).
    \201\ 15 U.S.C. 78f(b)(5).
---------------------------------------------------------------------------

    As described above, the Exchange proposes to operate its options 
market much as it operates its equities market today and in a manner 
similar to that of other options exchanges, while leveraging IEX's 
experience and expertise in understanding the needs of market makers to 
offer them additional tools designed to better manage risk and drive 
performance. As discussed in the Purpose section, IEX believes that the 
proposed enhanced liquidity protection mechanisms will result in market 
makers providing more competitive quotes which will benefit all market 
participants and thereby support the protection of investors and the 
public interest. Also as discussed in the Purpose section, most of the 
proposed IEX Options rules are based on the rules of other options 
exchanges, primarily MEMX, CBOE, MIAX, NYSE Amex, and NYSE Arca. 
Therefore, the Exchange does not believe these aspects of the proposed 
rule change that are substantively identical to other exchanges' rules 
raise any new or novel issues that have not been previously considered 
by the Commission. Moreover, the Exchange believes that the proposed 
functionality is consistent with Section 6(b)(5) of the Act because the 
System is designed to be efficient and its operation transparent, 
thereby facilitating transactions in securities, removing impediments 
to and perfecting the mechanisms of a free and open national market 
system. As described above, the Exchange's proposed rules, including 
the proposed Order Types and Handling Instructions, opening procedures, 
routing services, and order matching process are designed to provide a 
simplified suite of conventional features and to comply with all 
applicable regulatory requirements, including the obligations of the 
Options Order Protection and Locked/Crossed Market Plan.\202\
---------------------------------------------------------------------------

    \202\ See supra note 85.
---------------------------------------------------------------------------

    As discussed in the Purpose section, IEX's proposal includes a de 
minimis latency mechanism (or speedbump) on incoming order and quote 
messages designed to enable IEX to obtain the most accurate view of the 
market prior to processing orders and quotes, and a robust suite of 
risk protections, including the ORP, which is designed to protect 
market makers from excessive risk due to execution of quotes at stale 
prices. IEX believes that the proposed latency mechanism will protect 
investors and the public interest in several respects. First, by 
enabling IEX to obtain the most accurate view of market data prior to 
executing an order or quote, it thereby would support IEX's ability to 
accurately account for contemporaneous market data. IEX notes that this 
aspect of its functionality is designed to facilitate market 
participants executing at current (i.e., not ``stale'') prices. Second, 
by enabling the System to perform the Indicator calculation with 
current market data, it supports operation of the ORP (as discussed 
herein), which is designed to provide Market Makers with an optional 
tool to avoid excessive risk that can arise from execution of a quote 
at a stale price. As discussed in detail above, IEX believes that this 
protection will encourage market makers to post aggressively priced 
and/or deeper quotes on the Exchange which will benefit all market 
participants. Thus, from a functional perspective, IEX believes that 
the operation of the latency mechanism is consistent with the Act. 
Further, and as explained below, the proposed latency mechanism of 350 
microseconds is well within the geographic delays that exist among and 
between the data centers that IEX Options Members and other options 
exchanges use \203\ and is consistent with the naturally occurring time 
indeterminism that exists in order processing.\204\
---------------------------------------------------------------------------

    \203\ See https://www.ice.com/publicdocs/ICE_Global_Network_Factsheet.pdf for a description of latencies 
between various data centers.
    \204\ Accounting for the latency mechanism or speedbump is no 
different than accounting for other geographical distances between 
exchanges. See Securities Exchange Act Release No. 78101 (June 17, 
2016), 81 FR 41142, 41161 (June 23, 2016) (``2016 SEC Approval 
Order'') (approving IEX's 350 microsecond speed bump in the 
registration of the IEX Exchange as ``well within the range of 
geographic and technological latencies that market participants 
experience today'' such that ``latency to and from IEX will be 
comparable to--and even less than--delays attributable to other 
markets that currently are included in the NBBO,'' and finding the 
delay to be de minimis, i.e., so short as to not frustrate the 
purposes of the Exchange Act by impairing fair and efficient access 
to IEX's quotation); see also 2020 SEC Approval Order, supra note 
27, at 54441 (determining that IEX's de minimis speed bump when 
routing displayed equity orders is ``just like accounting for any 
other technological or geographic latency'' and doing so is 
consistent with applicable rules and regulations); see also Citadel, 
45 F.4th at 37 supra note 27 (ruling in favor of the SEC's approval 
of IEX's displayed equity order that traverses a speedbump and 
holding that IEX's displayed equity order's delay are ``similar to 
the delay that traders' communications already experience when 
traveling between various other exchanges across the country.'').
---------------------------------------------------------------------------

    IEX also believes that the latency mechanism is consistent with the 
Commission Interpretation Regarding Automated Quotations Under 
Regulation NMS (``de minimis delay

[[Page 26886]]

interpretation'').\205\ Although options markets do not have the same 
automated quotation requirements as in equities, even if they were to 
apply, the Commission's reasoning in the de minimis delay 
interpretation in the context of NMS automated quotations is 
instructive, as the latency mechanism IEX is proposing for the options 
exchange is a de minimis delay that does not impair fair and efficient 
access to an exchange's quotation. Specifically, the Commission stated 
in issuing its interpretation that intentional delays that are well 
within the geographic and technological latencies experienced by market 
participants when routing orders are de minimis to the extent they 
would not impair a market participant's ability to access a displayed 
quotation consistent with the goals of NMS Rule 611.\206\ The 
Commission also noted that an intentional delay of any duration must be 
fully disclosed and codified in a written rule of the exchange, which, 
as described below, the latency mechanism will be fully disclosed and 
codified in IEX's written rules.\207\
---------------------------------------------------------------------------

    \205\ See Commission Interpretation Regarding Automated 
Quotations Under Regulation NMS, Exchange Act Release No. 34-78102, 
81 FR 40,785, 40,792 (June 23, 2016).
    \206\ Id.
    \207\ Id.
---------------------------------------------------------------------------

    IEX believes that its proposed latency mechanism of 350 
microseconds is fully consistent with the reasoning in the Commission's 
de minimis delay interpretation.\208\ First, the delay is less than the 
existing geographic latencies experienced by market participants when 
routing orders. For example, latency between and among the data centers 
located in New Jersey range up to several hundred microseconds, with 
additional latency introduced by technology processing on both sides of 
an order or quote route between these data centers.\209\ Accordingly, 
the proposed latency mechanism is consistent with this aspect of the 
Commission's de minimis interpretation.
---------------------------------------------------------------------------

    \208\ IEX notes that the D.C. Circuit Court also agreed with the 
Commission's interpretation. The Court ruled entirely in favor of 
the SEC's approval of IEX's system that includes applying a 
speedbump and quote indicator to displayed equity orders. See 
Citadel Securities, 45 F.4th at 36, supra note 27 (concluding the 
SEC's approval of a 350 microseconds intentional access delay for 
displayed orders to be ``de minimis--i.e., a delay so short as to 
not frustrate the purposes of Rule 611 by impairing fair and 
efficient access to an exchange's quotations''); see also id. (``The 
SEC's conclusion that mere de minimis delays do not cause an order 
to violate Regulation NMS's immediacy requirement was therefore 
reasonable.'').
    \209\ See https://www.ice.com/publicdocs/ICE_Global_Network_Factsheet.pdf.
---------------------------------------------------------------------------

    The proposed latency mechanism also meets the additional prongs of 
the de minimis interpretation, that it be fully disclosed and codified 
in a written rule of the exchange that has become effective pursuant to 
Section 19 of the Act; and that the exchange articulates how the 
purpose, operation, and application of the delay is consistent with the 
Act and the rules and regulations thereunder applicable to the 
exchange. The latency mechanism's operation, as proposed, would be 
disclosed and codified in detail in IEX Rules 22.100(n) and 22.170(g). 
Those provisions specify that the latency mechanism shall mean a delay 
of 350 microseconds that is added to each incoming order and quote 
message from a User prior to processing by the System, and that will 
not apply to other communications between the Exchange and Users, Away 
Markets, data feeds, order processing and order execution on the IEX 
Options Book, and outbound communications to the Exchange's proprietary 
data feeds and OPRA. As discussed above, the purpose of the latency 
mechanism is to provide adequate time for the IEX System to obtain the 
most accurate view of market data to enable it to accurately price 
orders as well as to perform the Indicator calculation with current 
market data.
    Consequently, based on the foregoing, the Exchange believes that 
the latency mechanism is both de minimis and otherwise consistent with 
the Act.
    The Exchange believes that the proposed ORP is consistent with 
Section 6(b) of the Act \210\ in general, including furthering the 
objectives of Section 6(b)(5) of the Act,\211\ as the proposed optional 
risk protection mechanism would remove impediments to and perfect the 
mechanism of a free and open market and a national market system and 
promote just and equitable principles of trade by providing an optional 
quote parameter, available to all IEX Options Market Makers, that is 
designed to assess the materiality of an adverse price change in a 
particular options series so that the System can effectuate the advance 
trading instructions provided by the Market Maker to cancel or reprice 
its quote to the price level of the quote instability determination, as 
selected by the Market Maker. The ORP is an optional, narrowly tailored 
approach designed to provide protection from excessive risk of 
execution of quotes at stale prices and thereby enable market makers to 
make tighter and larger quotes (i.e., quotes at narrower spreads with 
greater size) thus enhancing the quality of the IEX Options market, to 
the benefit of all market participants. The Exchange believes it is 
appropriate to provide market makers with the choice to utilize this 
reasonable quote protection, particularly given the continuous quoting 
obligations specific to market makers and their importance in providing 
liquidity in the listed options market. The Exchange further believes 
this risk functionality will encourage market makers to provide 
additional depth and liquidity to the Exchange's markets, thereby 
removing impediments to and perfecting the mechanisms of a free and 
open market and a national market system and, in general, protecting 
investors and the public interest.
---------------------------------------------------------------------------

    \210\ 15 U.S.C. 78f(b).
    \211\ 15 U.S.C. 78f(b)(5).
---------------------------------------------------------------------------

    The Exchange believes that the ORP supports the protection of 
investors and public interest goals of the Act. As described in the 
Purpose section, based on the structural differences between equities 
and listed options markets, the options exchanges often do not have the 
same natural liquidity of buyers and sellers for each tradeable 
instrument (i.e., options series) as is generally the case in equities. 
As a result, market makers with affirmative obligations play a central 
role in providing liquidity to options exchanges through continuous 
two-sided quotes in large numbers of listed options series, thereby 
enabling investors to transact in listed options in accordance with 
their investment objectives. Because options market makers are required 
to maintain hundreds (and sometimes thousands) of quotes on options 
overlying underlying securities at any one time, a sudden market move 
in the underlying security can leave them vulnerable to being executed 
on quotes at stale prices and dislocated from the price of the 
underlying security.\212\ Liquidity takers engaged in latency arbitrage 
can target these quotes at stale prices, with limited risk should they 
fail, before the market maker has time to move its quotes to reflect 
the price change in the

[[Page 26887]]

underlying security exposing them to potentially major losses. Even 
high-speed market makers, due to the large number of quotes they are 
required to maintain, are susceptible to the risk of being unable to 
adjust their quotes fast enough to protect against strategies that can 
choose to send ``aggressive'' orders in specific options when they 
detect changing market conditions.\213\
---------------------------------------------------------------------------

    \212\ See, e.g., Dead Man's Switch, supra note 154 (discussing 
the need for quote protection for market makers to allow for a deep 
and liquid listed options market and explaining that ``race 
conditions'' negatively impact pricing efficiency, ``as market 
makers have been shown to quote wider spreads or step back instead 
of continually updating with price moves for fear of being ``picked 
off.''); see also Market Lens, supra note 21 (explaining the need 
for risk management in electronic trading given that ``traders who 
place limit orders--the foundation of public price discovery--are 
exposed to the risk that their quotations will be executed at an 
inopportune time, leading to potential losses'' and that the 
``greater the risk of an inopportune execution, the more 
compensation is required, which leads to wider bid-ask spreads. 
Conversely, anything the trader can do to lower the risk of an 
inopportune execution will lower the compensation required, which 
leads to narrower bid-ask spreads.'').
    \213\ See id.
---------------------------------------------------------------------------

    The ORP is designed to supplement the standard proposed risk checks 
to provide augmented protection to address the inherent risks faced by 
market makers. The Exchange notes that, as proposed, ORP would be an 
incremental step in providing further risk protections to market makers 
consistent with exchanges' long-standing practice of offering targeted 
risk protections to market makers in recognition of their obligations 
and the unique risks they face. IEX believes that the operation of the 
ORP is similar to price reasonability and activity-based risk checks 
offered by other options exchanges (and proposed by IEX herein), in 
terms of its impact on a resting quote.\214\ Each of these risk 
controls provide that the exchange will cancel an order or quote 
pursuant to the member's instructions when the control is triggered 
based on a determination that the price of the market maker's quote is 
``unreasonable'' because it is no longer reflective of the price of the 
underlying security and therefore likely stale (price reasonability 
check) or that the execution activity of a market maker's quotes 
exceeds the market maker's risk tolerance (activity-based controls). 
Additionally, the trading collar and limit order protection rules of 
other options exchanges and those similarly proposed by IEX provide for 
orders to be repriced.
---------------------------------------------------------------------------

    \214\ See, e.g., Market-Maker Protections, Market Structure, 
Optiver, July 17, 2023 (``Market Maker Protections''), available at 
https://optiver.com/insights/market-maker-protections/ (explaining 
that exchanges implement robust market-maker protections to ``assist 
market makers in coping with the risks of posting continuous, two-
sided quotes in thousands of financial instruments'' and to provide 
the ability to automatically pull or amend their quotes so that 
``all quotes falling within the scope of protection still resting on 
the book are prohibited from further execution'').
---------------------------------------------------------------------------

    Similarly, the ORP will enable IEX to cancel or reprice a Market 
Maker's quote based on a trigger in the discrete moments when the 
mathematical relationship between the options quote and the underlying 
security's price become substantially disconnected, as per the 
Indicator formula. However, IEX notes that the proposed ORP would be 
more transparent than the activity-based controls in determining when a 
market maker quote is potentially subject to cancelation (or 
adjustment) because it is based on a transparent formula specified in 
IEX's rules. Participants will know that any change in an options quote 
based on the ORP will only occur in the circumstances that are defined 
and in a predictable way based on the transparent formula. In contrast, 
those triggers for an activity-based control are nonpublic and set by 
each exchange member. Importantly, the ORP would not impact the 
effectiveness of these other risk tools. However, if Market Makers can 
better control the risks from latency arbitrage strategies through the 
narrowly tailored ORP, they may need to rely less on these other less 
transparent tools.
    As discussed above, because of the lack of natural sources of 
liquidity across the multitude of listed options series, market makers 
are subject to affirmative obligations to maintain continuous two-sided 
quotes on hundreds or thousands of individual options series. While IEX 
proposes to offer bulk quoting and purge port functionality to market 
makers (in the same manner as other options exchanges), in a fast-
moving market, the prices of their quotes can nonetheless become stale 
almost instantaneously. In those times, a sophisticated liquidity taker 
can target one or more market maker quotes at stale prices before the 
market maker can update its quotes, thereby exposing the market maker 
to potentially major losses. The ORP is designed to assist market 
makers with an option to manage this risk, similar to the other risk 
controls. While some overlap is expected, IEX believes that the 
Indicator would potentially identify additional instances of quotes at 
stale prices beyond those identified by the other price reasonability 
checks.
    Further, IEX notes that the operation of the Indicator is similar 
to the manner in which IEX's equities market (the ``Equities System'') 
utilizes a ``crumbling quote indicator'' to encourage the provision of 
displayed liquidity by providing reasonably tailored protections 
against adverse executions.\215\ As with the crumbling quote indicator, 
the Indicator will be a transparent formula based on a pre-determined 
objective set of circumstances that will be specified in IEX's rules to 
identify when the Protected Bid and/or Protected Offer in a particular 
options series is likely to move to a less aggressive price.
---------------------------------------------------------------------------

    \215\ In 2016, IEX received SEC approval of the IEX's exchange 
system that provides a similar quote indicator for equities. See 
2016 SEC Approval Order (approving IEX's exchange system in its 
registration as a national securities exchange, which included the 
approval of IEX's crumbling quote indicator that assesses quote 
instability by utilizing a real-time, based on pre-determined, 
objective set of conditions that protects orders from unfavorable 
executions when the market is moving against them), supra note 195. 
In 2020, IEX received SEC approval to apply the quote indicator to 
displayed orders in equities. See 2020 SEC Approval Order, supra 
note 18 (receiving unanimous support and concluding that the 
Exchange's displayed order proposal that included a similar quote 
indicator is consistent with the requirements of the Exchange Act 
and the rules and regulations thereunder applicable to a national 
securities exchange and that is designed to improve market quality, 
enhance price discovery, and promote just and equitable principles 
of trade).
---------------------------------------------------------------------------

    Moreover, the Options System will use the ORP in a manner similar 
to the way in which the Equities System applies the crumbling quote 
indicator to resting displayed liquidity, which reprices the applicable 
order or quote. The functional differences between the crumbling quote 
indicator and the Indicator reflect that options pricing is 
derivative.\216\ Thus, the Indicator will trigger when it identifies 
that a Protected Bid or Protected Offer is likely to move to a less 
aggressive price, based on a price change in the underlying security, 
thereby exposing the market maker to excessive risk, but, unlike the 
crumbling quote indicator, would reprice the quote to the price level 
of the quote instability determination or cancel the impacted quote and 
not remain ``on'' for a period of time after triggering. IEX believes 
that this approach is appropriate in view of the derivative pricing of 
options and that it will contribute to more displayed liquidity through 
improved execution quality, enhance the public price discovery process, 
and promote just and equitable principles of trade.\217\
---------------------------------------------------------------------------

    \216\ Because of this difference, the Indicator is designed to 
identify when the Protected Bid and/or Protected Offer in an option 
series is dislocated from the price of the underlying based on a 
price change in the underlying and therefore likely to be in 
transition to a less aggressive price, while the crumbling quote 
indicator utilizes changes in the protected quote in the security 
itself to make such a prediction.
    \217\ See, e.g., 2020 SEC Approval Order, supra note 18, at 
54443 (concluding that IEX's exchange functionality protects against 
adverse selection and incentivizes more displayed liquidity through 
improved execution quality for liquidity providers, which 
contributes ``to fair and orderly markets'' and supports ``the 
public price discovery process''); at 54443 (finding that the 
Exchange's speedbump and crumbling quote indicator promotes the 
interest of long term investors and inures to the ``benefit of 
displayed markets, leading to increased displayed liquidity from 
which all market participants ultimately will benefit''); at 54451 
(concluding that the Exchange's order protection functionality ``is 
designed to encourage market participants to post more priced limit 
orders, including displayed orders, on IEX, and thereby promotes 
just and equitable principles of trade, removes impediments to and 
perfects the mechanism of a free and open market and a national 
market, and, in general, protects investors and the public 
interest.'').

---------------------------------------------------------------------------

[[Page 26888]]

    Further, the ORP would be available, as a quote parameter, only to 
market makers and on an optional basis, because the Exchange believes 
that it is most appropriate as a tool to address market maker risk. IEX 
believes that this approach is appropriate because market makers are 
subject to affirmative obligations to provide continuous two-sided 
quotes and cannot back away or unduly widen their quotes during periods 
of price volatility, as can other liquidity providers.\218\ By offering 
market makers this narrowly-tailored, optional tool, IEX believes it 
will attract additional displayed liquidity that will be available to 
all market participants.
---------------------------------------------------------------------------

    \218\ See, e.g., Protecting Liquidity, supra note 155 
(explaining that without robust liquidity protection mechanisms for 
market makers to protect against the risks of displaying quotes at 
stale or outdated prices, ``market makers may be forced to widen 
their spreads, show less liquidity or simply exit the market'' and 
overall ``market quality can deteriorate'' with the result of 
investors suffering).
---------------------------------------------------------------------------

    IEX also believes that use of the Indicator in determining when to 
trigger the ORP is consistent with the protection of investors and the 
public interest because the Indicator is based on the well-recognized 
Black-Scholes options pricing model, which IEX believes is an 
appropriate methodology to identify when a Market Maker's quote in an 
option is dislocated from the price of the underlying security based on 
the mathematical relationship between the price of the underlying 
security and the overlying options. Thus, when the ORP is triggered, 
and IEX changes or cancels a Market Maker quote, such action would be 
in the expected time frame and direction based on a change that has 
already occurred in the price of the underlying security. ORP action 
would not be arbitrary or unexpected but would simply enable the Market 
Maker's quote to reflect the most accurate prices available in the 
market, which is what they endeavor to do themselves. The ORP action 
therefore will likely be more predictable than other risk-based tools, 
like ``purge ports'' that can result in wholesale canceling of quotes 
for reasons specific to the market maker. Further, the ORP action 
should not ``surprise'' market participants and if a potential contra-
party is unable to trade with the quote, they should not have expected 
a guaranteed execution in a narrow time frame when other factors, 
including risk mitigation functionality alternatives, are available on 
other options exchanges.
    Moreover, IEX believes that the latency mechanism \219\ (as 
discussed above) will serve to enhance the accuracy of the Indicator by 
providing adequate time for the IEX System to update its Indicator 
calculation with current market data and to enable IEX to obtain the 
most accurate view of the market prior to processing orders and quotes. 
In this regard, as discussed earlier, IEX notes that the proposed 
latency of 350 microseconds is well within the geographic delays that 
exist among and between the data centers that IEX Options Members, and 
other options exchanges, use and is consistent with the naturally 
occurring time indeterminism that exists in order processing.
---------------------------------------------------------------------------

    \219\ See proposed Rule 22.170(g).
---------------------------------------------------------------------------

    Further, IEX believes that limiting the availability of the ORP to 
resting market maker quotes is consistent with the Act for several 
reasons. As discussed in depth above, market makers are integral to 
providing liquidity on options exchanges, and at the same time subject 
to a potentially excessive level of risk from execution of one or more 
quotes at stale prices. Additionally, market makers' obligations apply 
across all series in their appointed class. Other liquidity providers 
are free to concentrate their efforts in a select number of series. 
Thus, market makers have greater exposure to latency arbitrage, take on 
greater risk, and incur more related capital charges than other 
liquidity providers. IEX determined to apply the functionality to 
resting quotes only as this approach will best achieve the purpose of 
protecting market markets from the excessive risk of executions at 
stale prices without disrupting market makers' ability to update their 
quotations.
    IEX further believes that it is consistent with the fair access and 
nondiscriminatory standards of Section 6(b)(5) of the Exchange Act to 
offer the ORP for IEX Market Makers' quotes. As discussed above, only 
market makers are subject to affirmative quoting obligations which 
create unique risks of adverse selection. Market makers play a central 
role in the options markets and account for over 99% of all open orders 
and quotes.\220\ Market makers, as opposed to proprietary traders as 
well as retail and institutional customers, are subject to 
disproportionate risk as a consequence of maintaining quotes in a large 
number of options. In contrast, IEX understands that retail customers' 
market risk is generally a function of individual trading strategies, 
without any broader market wide implications on liquidity in the 
market. Indeed, the Commission has recognized in a number of contexts 
that it is appropriate and consistent with the Act for exchanges to 
enhance market quality by providing functionality specific to market 
makers to help protect them from these risks in a manner that is 
balanced against the obligations to which market makers commit 
themselves.\221\
---------------------------------------------------------------------------

    \220\ See Dead Man's Switch, supra note 163.
    \221\ See discussion supra on prevalence of purge ports and 
activity-based risk controls for market makers. See also 
``Commission Guidance and Amendment to the Rules Relating to 
Organization and Program Management Concerning Proposed Rule Changes 
Filed by Self-Regulatory Organizations,'' Securities Exchange Act 
Release No. 34-58092 (July 3, 2008), 73 FR 40144, at 40148 (July 11, 
2008) noting that ``[m]arket makers can play an important role in 
providing liquidity to the market, and an exchange can appropriately 
reward them for that as well as the services they provide to the 
exchange's market, so long as the rewards are not disproportionate 
to the services provided.''
---------------------------------------------------------------------------

    IEX further notes that market makers typically manage their 
financial exposure risks resulting from their continuous quoting 
obligations in very short-term time frames, often measured in micro-
seconds. As such, consistent with the long-standing precedent of 
exchanges offering specific tools and benefits to market makers in 
recognition of their quoting obligations and concomitant significant 
risk exposure, the ORP is designed to mitigate these risks that are 
relevant in such high-speed environments. IEX also believes that 
because the ORP is designed specifically to mitigate systemic adverse 
selection risks faced by market makers that are subject to continuous 
quoting obligations in hundreds (and sometimes thousands) of options, 
the manner in which it would operate by repricing or canceling quotes 
would not generally be beneficial for customers who do not enter orders 
in the same scale.
    The ORP has been designed as a risk tool for options market makers 
based on the unique risks they face in today's options market 
structure. Their decisions on whether and when to use the ORP may vary 
by class and will be affected by price of the option, the volatility of 
the option and underlying, the NBBO spread, and many other factors. 
Consequently, as is the case with other risk tools provided by 
exchanges, retail investors would not be positioned to determine 
whether or when to use the ORP or to monitor the impact of that 
decision on their executions. IEX believes that retail investors will 
benefit, however, from the availability of any additional liquidity and 
competition that results from the use of the ORP by market makers.
    The Exchange also believes that applying the Indicator on a class-
by-class basis would remove impediments to, and perfect the mechanism 
of, a free and open market and a national market system and promote 
just and equitable principles of trade. As discussed in the

[[Page 26889]]

Purpose section, applying the Indicator on a class-by-class basis would 
enable the Exchange to appropriately utilize the ORP for classes with a 
high potential for adverse selection, while excluding classes 
presenting lower risk of adverse selection (such as classes with 
relatively lower volumes). This flexibility will therefore allow the 
Exchange to focus its technology resources in an impactful manner to 
ensure the ORP is available for those classes where its use will 
achieve its intended purpose, while excluding its use where it would 
likely provide minimal incremental value (for example, for classes with 
nonstandard characteristics).
    Moreover, IEX notes that the Commission has previously recognized 
the utility of IEX providing protection to liquidity providers through 
order types that leverage its crumbling quote indicator to 
appropriately protect market participants from the risks of transacting 
when the market is in transition and thereby incentivize the entry of 
liquidity providing orders. The Exchange believes that the proposed ORP 
is consistent with this history and is in furtherance of driving 
tighter and deeper displayed markets to the benefit of investors, as 
well as reducing barriers to entry for market maker participation and 
thereby support competition and reduce market maker concentration risk 
as discussed in the Purpose section.\222\
---------------------------------------------------------------------------

    \222\ See supra notes 212 and 214 and accompanying text.
---------------------------------------------------------------------------

    IEX also believes that the proposal is consistent with the firm 
quote obligations of a broker-dealer pursuant to Rule 602 of Regulation 
NMS.\223\ Specifically, any marketable interest that is executable 
against a market maker's quote that has been received by the System 
prior to the time that a quote instability determination is received by 
System will be automatically executed, subject to processing of any 
prior messages, at the price and up to the size of the market maker's 
quote. When enabled by a Market Maker, the ORP will operate 
automatically when triggered, based on the publicly disclosed formula 
without input from the market maker.
---------------------------------------------------------------------------

    \223\ See proposed Rule 23.140(d).
---------------------------------------------------------------------------

    IEX believes that the proposed ORP is consistent with the 
protection of investors and the public interest, fair and orderly 
markets, promotion of competition and innovation, and with the Exchange 
Act, including furthering the objectives of Section 6(b)(5) of the 
Act,\224\ because it is a narrowly-tailored approach designed to 
appropriately balance the risks faced by market makers with the 
legitimate objectives of liquidity takers by providing additional 
optional risk protection to market makers and thereby encourage 
aggressive quoting, reduce barriers to entry for market maker 
participation, support competition, and reduce market maker 
concentration risk.
---------------------------------------------------------------------------

    \224\ 15 U.S.C. 78f(b)(5).
---------------------------------------------------------------------------

    IEX conducted data analysis on the expected frequency with which it 
estimates that the ORP would impact a quote on IEX. The Exchange 
replayed OPRA data through its system for all series of over a thousand 
options classes of varying levels of volume and activity for various 
dates in February 2025 to estimate how often the ORP would impact a 
quote on IEX. Among the dates reviewed in February were: the day with 
the highest volume, the day with the lowest volume, the day with the 
highest CBOE Volatility Index[supreg] \225\ (``VIX'') level, the two 
days with the largest interday change in VIX, and Fridays with monthly 
and non-monthly settlements.
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    \225\ The VIX is a benchmark index designed to measure the 
market's expectation of future volatility.
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    The analysis set the ORP parameters to their most aggressive to 
maximize potential impact. Specifically, the Exchange set the Quote 
Instability Threshold to 0, the Delta Bound Band to its full range of 
0-1, and assumed ORP was enabled across all options classes. Further, 
the analysis assumed that: (1) IEX's displayed quote in the options 
classes assessed was at the NBBO 100% of the time, (2) IEX's displayed 
quote in such options classes was composed exclusively of Market Maker 
quotes, and (3) all of those Market Maker quotes were enabled to be 
subject to ORP.\226\ Based on the results of this analysis, the 
Exchange expects that the ORP would have a de minimis impact, but an 
impact that is narrowly tailored to provide protection from latency 
arbitrage strategies.
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    \226\ This assumption overstates the estimated ORP impact 
because IEX does not believe that any options exchange has quotes at 
the NBBO 100% of the trading day in all underlying classes, nor are 
such quotes that are in effect comprised exclusively of market maker 
quotes. Additionally, IEX does not believe that all IEX Market 
Makers would necessarily enable ORP on all of their quotes.
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    Across all classes reviewed, the Exchange estimates that the ORP 
would impact IEX Market Maker quotes on average per series 
significantly less than 0.001% of the trading day during regular 
trading hours (i.e., between 9:30 a.m. to 4:00 p.m.). For options 
classes in the Penny Interval Program,\227\ the analysis shows that the 
ORP would impact an IEX Market Maker's quote on average for less than 
0.01% of the trading day per series. ORP impact for options classes not 
in the Penny Interval Program averaged 0.0005% per option. Applying the 
analysis to the most active options class, the SPDR[supreg] S&P 
500[supreg] ETF Trust (``SPY''),\228\ ORP would impact an IEX Market 
Maker's quote for less than 0.2% of the trading day. Thus, the ORP is 
designed to be nearly imperceptible to all market participants who are 
not specifically seeking to engage in latency arbitrage to execute 
against a market maker's quote at a stale price, based on its speed-
based advantage that enables the most technologically low-latency view 
of market prices. IEX believes that this analysis supports that the ORP 
is a narrowly tailored approach designed to provide appropriate 
protection to market makers.
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    \227\ Excluding SPY, whose impact is described separately.
    \228\ SPY was also the class with the greatest observed ORP 
impact.
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    The Exchange further believes that offering more risk management 
protections to Market Makers would mitigate their exposure to excessive 
risk. As discussed in detail above, Market Makers are required to 
continuously provide two-sided quotes in substantial numbers of listed 
options series that can create large, unintended positions exposing 
market makers to excessive risk. Market Maker quotes are critical to 
provide liquidity to the market and contribute to price discovery for 
investors. Without robust liquidity protection, market makers may be 
forced to widen their spreads, show less liquidity or simply exit the 
market, which can result in deterioration of market quality and 
adversely impact investors' and other liquidity takers' ability to 
transact in the options markets.\229\ In sum, liquidity protection for 
options market makers is vital for achieving a healthy balance between 
liquidity providers and liquidity takers in the options market that 
will promote more displayed liquidity from which all market 
participants ultimately will benefit.
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    \229\ See supra note 215.
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    The Exchange believes that the manner in which it will determine 
certain of the values related to the Indicator formula (i.e., Delta 
Bound Bands, the Quote Instability Threshold, and the frequency of 
calculation of implied volatility) provides an appropriate degree of 
transparency coupled with the ability to modify those values to respond 
to rapidly changing market conditions or system issues in a manner 
designed to enable the Exchange to optimize effectiveness of the ORP. 
All applicable values and potential ranges will be transparently

[[Page 26890]]

specified in IEX rules with any modifications within such ranges 
effectuated through a rule filing pursuant to Rule 19b-4(f)(1) under 
the Exchange Act (or other appropriate rule filing type), thereby 
removing impediments to and perfecting the mechanisms of a free and 
open market and a national market system and, in general, protecting 
investors and the public interest.
    The Exchange believes that the proposed rules of IEX Options, as 
well as the proposed method of monitoring for compliance with and 
enforcing such rules is also consistent with the Act, particularly 
Sections 6(b)(1), 6(b)(5) and 6(b)(6) of the Act, which require, in 
part, that an exchange have the capacity to enforce compliance with, 
and provide appropriate discipline for, violations of the rules of the 
Commission and of the exchange. The Exchange has proposed to adopt 
rules necessary to regulate Options Members that are nearly identical 
to the approved rules of other options exchanges, as described above. 
The Exchange proposes to regulate activity on IEX Options in the same 
way it regulates activity on its equities market (and comparable to 
other options exchanges), through various Exchange specific functions, 
an RSA with FINRA, as well as participation in industry plans, 
including plans pursuant to Rule 17d-2 under the Exchange Act.
    In conclusion, for the reasons discussed above, IEX believes that 
the proposed rule change is consistent with the investor protection and 
public interest purposes of Section 6 of the Act. Additionally, IEX 
believes that establishing a new options market that participates in 
all the current (and any future) national market system plans governing 
options trading is consistent with Section 11A of the Act relating to 
the establishment of the national market system for securities.\230\ As 
proposed, IEX Options will offer a simple alternative to existing 
options exchanges that is designed to support competitive quoting to 
the benefit of all market participants.
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    \230\ 15 U.S.C. 78k-1.
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B. Self-Regulatory Organization's Statement on Burden on Competition

    The Exchange does not believe that the proposed rule change will 
result in any burden on competition that is not necessary or 
appropriate in furtherance of the purposes of the Act. To the contrary, 
the proposed rule change is designed to enhance competition by 
providing for an additional exchange market for the trading of listed 
options.
    IEX believes that this proposal will enhance competition by 
allowing the Exchange to leverage its existing robust technology 
platform to provide a resilient, deterministic, and transparent 
execution platform for options. The proposed rule change will insert an 
additional competitive dynamic to the options landscape by allowing the 
Exchange to compete with existing options exchanges and will promote 
further initiative and innovation among market centers and market 
participants.
    Further, the Exchange does not believe that the latency mechanism 
or optional Market Maker quote parameter aspect of the proposed rule 
change will impose any burden on competition not necessary or 
appropriate in furtherance of the purposes of the Act. To the contrary, 
these features are designed to enhance IEX Options' competitiveness by 
incentivizing the entry of increased Market Maker liquidity. Also, 
because the proposed ORP would provide Market Makers with an additional 
risk management mechanism, it would potentially increase competition 
among market makers by encouraging more market makers to provide 
liquidity in the market, as discussed above.
    The Exchange does not believe that the proposed rule change will 
impose any burden on intra-market competition because it will apply to 
all Options Members in the same manner and any Options Member can 
perform any specified function subject to meeting applicable 
requirements.
    The Exchange also does not believe that the proposed latency 
mechanism will impose any burden on intra-market competition that is 
not necessary or appropriate because it will apply in the same manner 
to all incoming orders and quotes.
    The Exchange also does not believe that the proposed ORP will 
impose any burden on intra-market competition that is not necessary or 
appropriate because it will be available in the same manner to all 
Market Makers and any Options Member could become a Market Maker, 
subject to meeting applicable requirements. The ORP is designed to 
mitigate Market Makers' exposure to excessive risk and thereby enable 
them to provide more competitive quotes to the benefit of all market 
participants. The Exchange also believes that limiting the ORP 
functionality to Market Makers will not impose any burden on intra-
market competition that is not necessary and appropriate because Market 
Makers are subject to robust affirmative quoting obligations and thus 
can uniquely benefit from the protections to be provided by the ORP. 
The Exchange thus believes it is reasonable to provide Market Makers 
with an additional tool to manage their risk parameters, particularly 
given their unique and critical role in the listed options market and 
the obligations that Market Makers must satisfy. As discussed in the 
Purpose and Statutory Basis sections, the proposed ORP will protect 
resting market-maker quotes (which are subject to quoting obligations) 
from executions at potentially stale prices, which the Exchange 
believes will reduce their risk and encourage Market Makers to provide 
more competitive markets on the Exchange, thereby benefitting all 
market participants through additional execution opportunities at 
prices that reflect the then-current market conditions. The Exchange 
expects the proposed rule change to increase liquidity and enhance 
competition in the market because Market Makers may be able to quote 
more aggressively with added productions from exposure to execution 
risk, thereby remove impediments to and perfect the mechanism of a free 
and open market and a national market system, and, in general, to 
protect investors and the public interest.
    The Exchange also does not believe that the proposal will impose 
any burden on inter-market competition that is not necessary or 
appropriate. Competing exchanges are free to adopt similar 
functionality, subject to the Commission rule filing process.

C. Self-Regulatory Organization's Statement on Comments on the Proposed 
Rule Change Received From Members, Participants, or Others

    Written comments were neither solicited nor received.

III. Date of Effectiveness of the Proposed Rule Change and Timing for 
Commission Action

    Within 45 days of the date of publication of the original notice in 
the Federal Register or within such longer period up to 90 days (i) as 
the Commission may designate if it finds such longer period to be 
appropriate and publishes its reasons for so finding or (ii) as to 
which the self-regulatory organization consents, the Commission will:
    (A) by order approve or disapprove the proposed rule change, or
    (B) institute proceedings to determine whether the proposed rule 
change should be disapproved.\231\
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    \231\ See supra note 7 (citing to the Commission's order 
instituting proceedings to determine whether to disapprove the 
proposed rule change). July 20, 2025 is the date by which the 
Commission shall issue an order approving, disapproving, or 
extending the period for not more than 60 days. See 15 U.S.C. 
78s(b)(2)(B)(ii).

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[[Page 26891]]

IV. Solicitation of Comments

    Interested persons are invited to submit written data, views and 
arguments concerning Amendment No. 3, including whether the proposed 
rule change as modified by Amendment No. 3 is consistent with the Act. 
Comments may be submitted by any of the following methods:

Electronic Comments

     Use the Commission's internet comment form (https://www.sec.gov/rules/sro.shtml); or
     Send an email to [email protected]. Please include 
file number SR-IEX-2025-02 on the subject line.

Paper Comments

     Send paper comments in triplicate to Secretary, Securities 
and Exchange Commission, 100 F Street NE, Washington, DC 20549-1090.
All submissions should refer to file number SR-IEX-2025-02. This file 
number should be included on the subject line if email is used. To help 
the Commission process and review your comments more efficiently, 
please use only one method. The Commission will post all comments on 
the Commission's internet website (https://www.sec.gov/rules/sro.shtml). Copies of the submission, all subsequent amendments, all 
written statements with respect to the proposed rule change that are 
filed with the Commission, and all written communications relating to 
the proposed rule change between the Commission and any person, other 
than those that may be withheld from the public in accordance with the 
provisions of 5 U.S.C. 552, will be available for website viewing and 
printing in the Commission's Public Reference Room, 100 F Street NE, 
Washington, DC 20549, on official business days between the hours of 10 
a.m. and 3 p.m. Copies of the filing also will be available for 
inspection and copying at the principal office of the Exchange. Do not 
include personal identifiable information in submissions; you should 
submit only information that you wish to make available publicly. We 
may redact in part or withhold entirely from publication submitted 
material that is obscene or subject to copyright protection. All 
submissions should refer to file number SR-IEX-2025-02 and should be 
submitted on or before July 9, 2025.

    For the Commission, by the Division of Trading and Markets, 
pursuant to delegated authority.\232\
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    \232\ 17 CFR 200.30-3(a)(12).
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Sherry R. Haywood,
Assistant Secretary.
[FR Doc. 2025-11525 Filed 6-23-25; 8:45 am]
BILLING CODE 8011-01-P