[Federal Register Volume 83, Number 45 (Wednesday, March 7, 2018)]
[Notices]
[Pages 9761-9765]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-04624]


=======================================================================
-----------------------------------------------------------------------

SECURITIES AND EXCHANGE COMMISSION

[Release No. 34-82801; File No. SR-OCC-2017-022]


Self-Regulatory Organizations; The Options Clearing Corporation; 
Order Instituting Proceedings To Determine Whether To Approve or 
Disapprove Proposed Rule Change Related to The Options Clearing 
Corporation's Margin Methodology

March 2, 2018.

I. Introduction

    On November 13, 2017, The Options Clearing Corporation (``OCC'') 
filed with the Securities and Exchange Commission (``Commission'') the 
proposed rule change SR-OCC-2017-022 (``Proposed Rule Change'') 
pursuant to Section 19(b) of the Securities Exchange Act of 1934 
(``Act''),\1\ and Rule 19b-4 thereunder.\2\ The Proposed Rule Change 
was published for comment in the Federal Register on December 4, 
2017.\3\ On January 18, 2018, the Commission designated a longer period 
of time for Commission action on the Proposed Rule Change.\4\ As of 
February 20, 2018,\5\ the Commission has received one comment letter on 
the proposal contained in the Advance Notice.\6\ The Commission is

[[Page 9762]]

publishing this order to institute proceedings pursuant to Section 
19(b)(2)(B) \7\ of the Act to determine whether to approve or 
disapprove the Proposed Rule Change.
---------------------------------------------------------------------------

    \1\ 15 U.S.C. 78s(b)(1).
    \2\ 17 CFR 240.19b-4.
    \3\ Securities Exchange Act Release No. 82161 (Nov. 28, 2017), 
82 FR 57306 (Dec. 4, 2017) (File No. SR-OCC-2017-022) (``Notice''). 
On November 13, 2017, OCC also filed a related advance notice (SR-
OCC-2017-811) with the Commission pursuant to Section 806(e)(1) of 
Title VIII of the Dodd-Frank Wall Street Reform and Consumer 
Protection Act, entitled the Payment, Clearing, and Settlement 
Supervision Act of 2010 and Rule 19b-4(n)(1)(i) under the Act 
(``Advance Notice''). 12 U.S.C. 5465(e)(1) and 17 CFR 240.19b-
4(n)(1)(i), respectively. The Advance Notice was published in the 
Federal Register on December 27, 2017. Securities Exchange Act 
Release No. 82371 (Dec. 20, 2017), 82 FR 61354 (Dec. 27, 2017) (SR-
OCC-2017-811).
     The Financial Stability Oversight Council designated OCC a 
systemically important financial market utility on July 18, 2012. 
See Financial Stability Oversight Council 2012 Annual Report, 
Appendix A, available at http://www.treasury.gov/initiatives/fsoc/Documents/2012%20Annual%20Report.pdf. Therefore, OCC is required to 
comply with the Payment, Clearing and Settlement Supervision Act and 
file advance notices with the Commission. See 12 U.S.C. 5465(e).
    \4\ Securities Exchange Act Release No. 82534 (Jan. 18, 2018), 
83 FR 3376 (Jan. 24, 2018) (File No. SR-OCC-2017-022).
    \5\ The comment period closed on December 26, 2017.
    \6\ See letter from Michael Kitlas, dated November 28, 2017, to 
Eduardo A. Aleman, Assistant Secretary, Commission, available at 
https://www.sec.gov/comments/sr-occ-2017-022/occ2017022.htm 
(``Kitlas Letter''). After reviewing the Kitlas Letter, the 
Commission believes that it is nonresponsive to the Proposed Rule 
Change and therefore outside the scope of the proposal.
     Since the proposal contained in the Proposed Rule Change was 
also filed as an Advance Notice, the Commission considered all 
public comments received on the proposal regardless of whether the 
comments were submitted on the Proposed Rule Change or the Advance 
Notice.
    \7\ 15 U.S.C. 78s(b)(2)(B).
---------------------------------------------------------------------------

    Institution of proceedings does not indicate that the Commission 
has reached any conclusions with respect to the Proposed Rule Change, 
nor does it mean that the Commission will ultimately disapprove the 
Proposed Rule Change. Rather, as discussed below, the Commission seeks 
additional input on the Proposed Rule Change and issues presented by 
the proposal.

II. Description of the Proposed Rule Change \8\
---------------------------------------------------------------------------

    \8\ The description of the Proposed Rule Change is substantially 
excerpted from the Notice. See Notice, 82 FR at 57306-57313.
---------------------------------------------------------------------------

OCC's Current Margin Methodology

    OCC's margin methodology, the System for Theoretical Analysis and 
Numerical Simulations (``STANS''), calculates clearing member margin 
requirements.\9\ STANS utilizes large-scale Monte Carlo simulations to 
forecast price and volatility movements in determining a clearing 
member's margin requirement.\10\ The STANS margin requirement is 
calculated at the portfolio level of clearing member accounts with 
positions in marginable securities and consists of an estimate of a 99% 
expected shortfall \11\ over a two-day time horizon and an add-on 
margin charge for model risk (the concentration/dependence stress test 
charge).\12\ The STANS methodology is used to measure the exposure of 
portfolios of options and futures cleared by OCC and cash instruments 
in margin collateral.\13\
---------------------------------------------------------------------------

    \9\ See Securities Exchange Act Release No. 53322 (Feb. 15, 
2006), 71 FR 9403 (Feb. 23, 2006) (File No. SR-OCC-2004-20).
    \10\ See OCC Rule 601; see also Notice, 82 FR at 57307.
    \11\ See Notice, 82 FR at 57307.
     The expected shortfall component is established as the 
estimated average of potential losses higher than the 99% value at 
risk threshold. See Notice, 82 FR at 57307, note 8.
    \12\ See Notice, 82 FR at 57307. A detailed description of the 
STANS methodology is available at http://optionsclearing.com/risk-management/margins/. See Notice, 82 FR at 57307, note 9.
    \13\ See Notice, 82 FR at 57307.
---------------------------------------------------------------------------

    A ``risk factor'' within OCC's margin system may be defined as a 
product or attribute whose historical data is used to estimate and 
simulate the risk for an associated product.\14\ The majority of risk 
factors utilized in the STANS methodology are total returns on 
individual equity securities. Other risk factors considered include: 
Returns on equity indexes; returns on implied volatility risk factors 
that are a set of nine chosen volatility pivots per product; changes in 
foreign exchange rates; securities underlying equity-based products; 
and changes in model parameters that sufficiently capture the model 
dynamics from a larger set of data.\15\
---------------------------------------------------------------------------

    \14\ Id.
    \15\ Id.
---------------------------------------------------------------------------

    Under OCC's current margin methodology, OCC obtains monthly price 
data for most of its equity-based products from a third-party 
vendor.\16\ These data arrive around the second week of every month in 
arrears and require approximately four weeks for OCC to process prior 
to installing into OCC's margin system.\17\ As a result, correlations 
and statistical parameters for risk factors at any point in time 
represent back-dated data and therefore may not be representative of 
the most recent market data.\18\ In the absence of daily updates, OCC 
employs an approach where one or more identified market proxies (or 
``scale-factors'') are used to incorporate day-to-day market volatility 
across all associated asset classes throughout.\19\ The scale-factor 
approach, however, assumes a perfect correlation of the volatilities 
between the security and its scale-factor, which gives little room to 
capture the idiosyncratic risk of a given security and which may be 
different from the broad market risk represented by the scale-
factor.\20\ In addition, OCC imposes a floor on volatility estimates 
for its equity-based products using a 500-day look back period.\21\
---------------------------------------------------------------------------

    \16\ Id.
    \17\ Id.
    \18\ Id.
    \19\ Id.
    \20\ Id.
    \21\ See Notice, 82 FR at 57307-57308.
     In risk management, it is a common practice to establish a 
floor for volatility at a certain level in order to protect against 
procyclicality in the model. See Notice, 82 FR at 57307-57308, note 
14.
---------------------------------------------------------------------------

    OCC believes that using monthly price data, coupled with the 
dependency of margins on scale-factors and the volatility floor can 
result in imprecise changes in margins charged to clearing members, 
specifically across periods of heavy volatility when the correlation 
between the risk factor and a scale-factor fluctuate.\22\
---------------------------------------------------------------------------

    \22\ See Notice, 82 FR at 57308.
---------------------------------------------------------------------------

    OCC's current methodology for estimating covariance and 
correlations between risk factors relies on the same monthly data 
described above, resulting in a similar lag time between updates.\23\ 
In addition, correlation estimates are based off historical returns 
series, with estimates between a pair of risk factors being highly 
sensitive to the volatility of either risk factor in the chosen 
pair.\24\ Accordingly, OCC believes that the current approach results 
in potentially less stable correlation estimates that may not be 
representative of current market conditions.\25\
---------------------------------------------------------------------------

    \23\ Id.
    \24\ Id.
    \25\ Id.
---------------------------------------------------------------------------

    In addition, under OCC's existing margin methodology, theoretical 
price scenarios for ``defaulting securities'' \26\ are simulated using 
uncorrelated return scenarios with an average zero return and a pre-
specified volatility called ``default variance.'' \27\ The default 
variance is estimated as the average of the top 25 percent quantile of 
the conditional variances of all securities.\28\ As a result, OCC 
believes that these default estimates may be impacted by extremely 
illiquid securities with discontinuous data.\29\ In addition, OCC 
believes that the default variance (and the associated scale-factors 
used to scale up volatility) is also subject to sudden jumps with the 
monthly simulation installations across successive months because it is 
derived from monthly data updates, as opposed to daily updates, which 
are prone to wider fluctuations and are subject to adjustments using 
scale-factors.\30\
---------------------------------------------------------------------------

    \26\ Within the context of OCC's margin system, securities that 
do not have enough historical data for calibration are classified as 
``defaulting securities.'' See Notice, 82 FR at 57308, note 15.
    \27\ See Notice, 82 FR at 57308.
    \28\ Id.
    \29\ Id.
    \30\ Id.
---------------------------------------------------------------------------

Proposed Changes to Current Margin Methodology \31\
---------------------------------------------------------------------------

    \31\ In addition to the proposed methodology changes described 
herein, OCC also would make some clarifying and clean-up changes, 
unrelated to the proposed changes described above, to update its 
margin methodology to reflect existing practices for the daily 
calibration of seasonal and non-seasonal energy models and the 
removal of methodology language for certain products that are no 
longer cleared by OCC. See Notice, 82 FR at 57308, note 17.
---------------------------------------------------------------------------

1. Daily Updates of Price Data
    OCC proposes to introduce daily updates for price data for equity 
products, including daily corporate action-adjusted returns of 
equities, Exchange Traded Funds (``ETFs''), Exchange Traded Notes 
(``ETNs'') and

[[Page 9763]]

certain indexes.\32\ OCC believes that the proposed change would help 
ensure that OCC's margin methodology is reliant on data that is more 
representative of current market conditions, thereby resulting in more 
accurate and responsive margin requirements.\33\ In addition, OCC 
believes that the introduction of daily price updates would enable 
OCC's margin methodology to better capture both market and 
idiosyncratic risk by allowing for daily updates to the parameters 
associated with the econometric model (discussed below) that captures 
the risk associated with a particular product, and therefore help 
ensure that OCC's margin requirements are based on more current market 
conditions.\34\ As a result, OCC would also reduce its reliance on the 
use of scale-factors to incorporate day-to-day market volatility, which 
OCC believes give little room to capture the idiosyncratic risk of a 
given security and which may be different from the broad market risk 
represented by the scale-factor.\35\
---------------------------------------------------------------------------

    \32\ See Notice, 82 FR at 57308.
    \33\ Id.
    \34\ Id.
    \35\ Id.
---------------------------------------------------------------------------

2. Proposed Enhancements to the Econometric Model
    OCC is proposing the following enhancements to its econometric 
model for calculating statistical parameters for all qualifying risk 
factors that reflect the most recent data obtained: \36\
---------------------------------------------------------------------------

    \36\ See Notice, 82 FR at 57308-57309.
---------------------------------------------------------------------------

i. Daily Updates for Statistical Parameters
    Under the proposal, the statistical parameters for the model would 
be updated on a daily basis using the new daily price data obtained by 
OCC from a reliable third-party (as described above).\37\ As a result, 
OCC would no longer need to rely on scale-factors to approximate day-
to-day market volatility for equity-based products.\38\ OCC believes 
that calibrating statistical parameters on a daily basis would allow 
OCC to calculate more accurate margin requirements that represent the 
most recent market data.\39\
---------------------------------------------------------------------------

    \37\ See Notice, 82 FR at 57309. OCC notes that this change 
would apply to most risk factors with the exception of certain 
equity indexes, Treasury securities, and energy futures products, 
which are already updated on a daily basis. See Notice, 82 FR 57309, 
at note 18.
    \38\ See Notice, 82 FR at 57309.
    \39\ Id.
---------------------------------------------------------------------------

ii. Proposed Enhancements To Capture Asymmetry in Conditional Variance
    The current approach for forecasting the conditional variance for a 
given risk factor does not consider the asymmetric volatility 
phenomenon observed in financial markets (also called the ``leverage 
effect'') where volatility is more sensitive and reactive to market 
downturns.\40\ Under the proposal, OCC would amend its econometric 
model to include new features (i.e., incorporating asymmetry into its 
forecast volatility) designed to allow the conditional volatility 
forecast to be more sensitive to market downturns and thereby capture 
the most significant dynamics of the relationship between price and 
volatility observed in financial markets.\41\ OCC believes the proposed 
enhancement would result in more accurate and responsive margin 
requirements, particularly in market downturns.\42\
---------------------------------------------------------------------------

    \40\ Id.
    \41\ Id.
    \42\ Id.
---------------------------------------------------------------------------

iii. Proposed Change in Statistical Distribution
    OCC also proposes to change the statistical distribution used to 
model the returns of equity prices. OCC's current methodology uses a 
fat tailed distribution \43\ to model returns; \44\ however, price 
scenarios generated using very large log-return scenarios (positive) 
that follow this distribution can approach infinity and could 
potentially result in excessively large price jumps, a known limitation 
of this distribution.\45\ Under the proposal, OCC would adopt a more 
defined distribution (Standardized Normal Reciprocal Inverse Gaussian 
or NRIG) for modeling returns, which OCC believes would more 
appropriately simulate future returns based on the historical price 
data for the products in question and allows for more appropriate 
modeling of fat tails.\46\ As a result, OCC believes that the proposed 
change would lead to more consistent treatment of log returns both on 
the upside as well as downside of the distribution.\47\
---------------------------------------------------------------------------

    \43\ A data set with a ``fat tail'' is one in which extreme 
price returns have a higher probability of occurrence than would be 
the case in a normal distribution. See Notice, 82 FR at 57309, note 
21.
    \44\ See Notice, 82 FR at 57309.
    \45\ Id.
    \46\ Id.
    \47\ Id.
---------------------------------------------------------------------------

iv. Second Day Volatility Forecast
    OCC further proposes to introduce a second-day forecast for 
volatility into the econometric model to estimate the two-day scenario 
distributions for risk factors.\48\ Under the current methodology, OCC 
typically uses a two-day horizon to determine its risk exposure to a 
given portfolio.\49\ This is done by simulating 10,000 theoretical 
price scenarios for the two-day horizon using a one-day forecast 
conditional variance; the value at risk and expected shortfall 
components of the margin requirement are then determined from the 
simulated profit/loss distributions.\50\ These one-day and two-day 
returns scenarios are both simulated using the one-day forecast 
conditional variance estimate.\51\ OCC believes that this could lead to 
a risk factor's coverage differing substantially on volatile trading 
days.\52\ As a result, OCC proposes to introduce a second-day forecast 
variance for all equity-based risk factors.\53\ The second-day 
conditional variance forecast would be estimated for each of the 10,000 
Monte Carlo returns scenarios, resulting in more accurately estimated 
two-day scenario distributions, and therefore more accurate and 
responsive margin requirements.\54\
---------------------------------------------------------------------------

    \48\ Id. This proposed change would not apply to STANS implied 
volatility scenario risk factors. For those risk factors, OCC's 
existing methodology would continue to apply. See Notice, 82 FR at 
57309, note 23.
    \49\ See Notice, 82 FR at 57309.
    \50\ Id.
    \51\ Id.
    \52\ Id.
    \53\ Id.
    \54\ Id.
---------------------------------------------------------------------------

v. Anti-Procyclical Floor for Volatility Estimates
    In addition, OCC proposes to modify its floor for volatility 
estimates. OCC currently imposes a floor on volatility estimates for 
its equity-based products using a 500-day look back period.\55\ Under 
the proposal, OCC would extend this look back period to 10 years (2520 
days) in the enhanced model and apply this floor to volatility 
estimates for other products (excluding implied volatility risk factor 
scenarios).\56\ OCC believes that using a longer 10-year look back 
period will help ensure that OCC captures sufficient historical events/
market shocks in the calculation of its anti-procyclical floor.\57\
---------------------------------------------------------------------------

    \55\ Id.
    \56\ Id.
    \57\ Id.
---------------------------------------------------------------------------

3. Proposed Enhancements to Correlation Estimates
    As described above, OCC's current methodology for estimating 
covariance and correlations between risk factors relies on the same 
monthly price data feeding the econometric model, resulting in a 
similar lag time between

[[Page 9764]]

updates.\58\ In addition, correlation estimates are based off 
historical returns series, with estimates between a pair of risk 
factors being highly sensitive to the volatility of either risk factor 
in the chosen pair.\59\ The current approach therefore results in 
correlation estimates being sensitive to volatile historical data.\60\
---------------------------------------------------------------------------

    \58\ See Notice, 82 FR at 57310.
    \59\ Id.
    \60\ Id.
---------------------------------------------------------------------------

    In order to address these limitations, OCC proposes to enhance its 
methodology for calculating correlation estimates by moving to a daily 
process for updating correlations (with a minimum of one-week's lag) to 
help ensure clearing member account margins are more current and thus 
more accurate.\61\ Moreover, OCC proposes to enhance its approach to 
modeling correlation estimates by de-volatizing \62\ the returns series 
to estimate the correlations.\63\ Under the proposed approach, OCC 
would first consider the returns excess of the mean (i.e., the average 
estimated from historical data sample) and then further scale them by 
the corresponding estimated conditional variances.\64\ OCC believes 
that using de-volatized returns would lead to normalizing returns 
across a variety of asset classes and make the correlation estimator 
less sensitive to sudden market jumps and therefore more stable.\65\
---------------------------------------------------------------------------

    \61\ Id.
    \62\ Id.
    \63\ Id.
    \64\ Id.
    \65\ Id.
---------------------------------------------------------------------------

4. Defaulting Securities Methodology
    Under the proposal, OCC would enhance its methodology for 
estimating the defaulting variance in its model.\66\ OCC's margin 
system is dependent on market data to determine clearing member margin 
requirements.\67\ Securities that do not have enough historical data 
are classified as to be a ``defaulting security'' within OCC 
systems.\68\ As noted above, within current STANS systems, the 
theoretical price scenarios for defaulting securities are simulated 
using uncorrelated return scenarios with a zero mean and a default 
variance, with the default variance being estimated as the average of 
the top 25 percent quantile of the conditional variances of all 
securities.\69\ As a result, these default estimates may be impacted by 
extremely illiquid securities with discontinuous data.\70\ In addition, 
the default variance (and the associated scale-factors used to scale up 
volatility) is also subject to sudden jumps with the monthly simulation 
installations across volatile months.\71\ To mitigate these concerns, 
OCC proposes to: (i) Use only optionable equity securities to estimate 
the defaulting variance; (ii) use a shorter time series to enable 
calibration of the model for all securities; and (iii) simulate default 
correlations with the driver Russell 2000 index (``RUT'').\72\
---------------------------------------------------------------------------

    \66\ Id.
    \67\ Id.
    \68\ Id.
    \69\ Id.
    \70\ Id.
    \71\ Id.
    \72\ Id.
---------------------------------------------------------------------------

i. Proposed Modifications to Securities and Quantile Used in Estimation
    Under the proposal, only optionable equity securities, which are 
typically more liquid, would be considered while estimating the default 
variance.\73\ This limitation would eliminate from the estimation 
almost all illiquid securities with discontinuous data that could 
contribute to high conditional variance estimates and thus a high 
default variance.\74\ In addition, OCC proposes to estimate the default 
variance as the lowest estimate of the top 10 percent of the floored 
conditional variance across the risk factors.\75\ OCC believes that 
this change in methodology would help ensure that while the estimate is 
aggressive it is also robust to the presence of outliers caused by a 
few extremely volatile securities that influence the location parameter 
of a distribution.\76\ Moreover, as a consequence of the daily updates 
described above, the default variances would change daily and there 
would be no scale-factor to amplify the effect of the variance on risk 
factor coverage.\77\
---------------------------------------------------------------------------

    \73\ Id.
    \74\ Id.
    \75\ Id.
    \76\ Id.
    \77\ Id.
---------------------------------------------------------------------------

ii. Proposed Change in Time Series
    Under the proposal, OCC would use a shorter time series to enable 
calibration of the model for all securities.\78\ Currently, OCC does 
not calibrate parameters for defaulting securities that have historical 
data of less than two years.\79\ OCC is proposing to shorten this time 
period to around 6 months (180 days) to enable calibration of the model 
for all securities within OCC systems.\80\ OCC believes that this 
shorter time series is sufficient to produce stable calibrated 
parameters.\81\
---------------------------------------------------------------------------

    \78\ Id.
    \79\ Id.
    \80\ Id.
    \81\ Id.
---------------------------------------------------------------------------

iii. Proposed Default Correlation
    Under the proposal, returns scenarios for defaulting securities 
\82\ would be simulated using a default correlation with the driver 
RUT.\83\ The default correlation of the RUT index is roughly equal to 
the median of all positively correlated securities with the index.\84\ 
Since 90% of the risk factors in OCC systems correlate positively to 
the RUT index, OCC would only consider those risk factors to determine 
the median.\85\ OCC believes that the median of the correlation 
distribution has been steady over a number of simulations and is 
therefore proposing that it replace the current methodology of 
simulating uncorrelated scenarios, which OCC believes is not a 
realistic approach.\86\
---------------------------------------------------------------------------

    \82\ See supra note 25.
    \83\ See Notice, 82 FR at 57310. OCC notes that, in certain 
limited circumstances where there are reasonable grounds backed by 
the existing return history to support an alternative approach in 
which the returns are strongly correlated with those of an existing 
risk factor (a ``proxy'') with a full price history, the margin 
methodology allows OCC's Financial Risk Management staff to 
construct a ``conditional'' simulation to override any default 
treatment that would have otherwise been applied to the defaulting 
security. See Notice, 82 FR at 57310, note 26.
    \84\ See Notice, 82 FR at 57310.
    \85\ Id.
    \86\ Id.
---------------------------------------------------------------------------

III. Proceedings To Determine Whether To Approve or Disapprove the 
Proposed Rule Change and Grounds for Disapproval Under Consideration

    The Commission is instituting proceedings pursuant to Section 
19(b)(2)(B) of the Act to determine whether the Proposed Rule Change 
should be approved or disapproved.\87\ Institution of proceedings is 
appropriate at this time in view of the legal and policy issues raised 
by the Proposed Rule Change. As noted above, institution of proceedings 
does not indicate that the Commission has reached any conclusions with 
respect to any of the issues involved. Rather, the Commission seeks and 
encourages interested persons to comment on the Proposed Rule Change 
and provide arguments to support the Commission's

[[Page 9765]]

analysis as to whether to approve or disapprove the proposal.
---------------------------------------------------------------------------

    \87\ 15 U.S.C. 78s(b)(2)(B) (providing that proceedings to 
determine whether to disapprove a proposed rule change must be 
concluded within 180 days of the date of publication of notice of 
the filing of the proposed rule change. The time for conclusion of 
the proceedings may be extended for up to an additional 60 days if 
the Commission finds good cause for such extension and publishes its 
reasons for so finding or if the self-regulatory organization 
consents to the extension).
---------------------------------------------------------------------------

    Pursuant to Section 19(b)(2)(B) of the Act,\88\ the Commission is 
providing notice of the grounds for disapproval under consideration. 
The Commission is instituting proceedings to allow for additional 
analysis of, and input from, commenters with respect to the Proposed 
Rule Change's consistency with the Act and the rules thereunder. 
Specifically, the Commission believes that the Proposed Rule Change 
raises questions as to whether the proposal is consistent with (i) 
Section 17A(b)(3)(F) of Act, which requires that the rules of a 
clearing agency be designed to, among other things, assure the 
safeguarding of securities and funds which are in the custody or 
control of the clearing agency or for which it is responsible; \89\ 
(ii) Rules 17Ad-22(b)(1) and (b)(2) under the Act, which require a 
registered clearing agency that performs central counterparty services 
establish, implement, maintain and enforce written policies and 
procedures reasonably designed to, in part: (1) Measure its credit 
exposures to its participants at least once a day and limit its 
exposures to potential losses from defaults by its participants under 
normal market conditions so that the operations of the clearing agency 
would not be disrupted and non-defaulting participants would not be 
exposed to losses that they cannot anticipate or control; and (2) use 
margin requirements to limit its credit exposures to participants under 
normal market conditions and use risk-based models and parameters to 
set margin requirements; \90\ and (iii) Rule 17Ad-22(e)(6) under the 
Act, which requires OCC to establish, implement, maintain and enforce 
written policies and procedures reasonably designed to cover its credit 
exposures to its participants by establishing a risk-based margin 
system that, among other things: (i) Considers, and produces margin 
levels commensurate with, the risks and particular attributes of each 
relevant product, portfolio, and market; (ii) calculates margin 
sufficient to cover its potential future exposure to participants in 
the interval between the last margin collection and the close out of 
positions following a participant default; and (iii) uses reliable 
sources of timely price data and uses procedures and sound valuation 
models for addressing circumstances in which pricing data are not 
readily available or reliable.\91\
---------------------------------------------------------------------------

    \88\ 15 U.S.C. 78s(b)(2)(B).
    \89\ 15 U.S.C. 78q-1(b)(3)(F).
    \90\ 17 CFR 240.17Ad-22(b)(1) and (2).
    \91\ 17 CFR 240.17Ad-22(e)(6).
---------------------------------------------------------------------------

IV. Request for Written Comments

    The Commission requests that interested persons provide written 
submissions of their views, data, and arguments with respect to the 
issues raised by the Proposed Rule Change. In particular, the 
Commission invites the written views of interested persons concerning 
whether the Proposed Rule Change is inconsistent with Section 
17A(b)(3)(F) of the Act \92\ and Rules 17Ad-22(b)(1)-(2) \93\ and 17Ad-
22(e)(6) \94\ under the Act, or any other provision of the Act or rules 
and regulations thereunder.
---------------------------------------------------------------------------

    \92\ 15 U.S.C. 78q-1(b)(3)(F).
    \93\ 17 CFR 240.17Ad-22(b)(1)-(2).
    \94\ 17 CFR 240.17Ad-22(e)(6).
---------------------------------------------------------------------------

    Although there do not appear to be any issues relevant to approval 
or disapproval that would be facilitated by an oral presentation of 
views, data, and arguments, the Commission will consider, pursuant to 
Rule 19b-4, any request for an opportunity to make an oral 
presentation.\95\
---------------------------------------------------------------------------

    \95\ Section 19(b)(2) of the Act, as amended by the Securities 
Acts Amendments of 1975, Public Law 94-29, 89 Stat. 97 (1975), 
grants the Commission flexibility to determine what type of 
proceeding--either oral or notice and opportunity for written 
comments--is appropriate for consideration of a particular proposal 
by a self-regulatory organization. See Securities Acts Amendments of 
1975, Report of the Senate Committee on Banking, Housing and Urban 
Affairs to Accompany S. 249, S. Rep. No. 75, 94th Cong., 1st Sess. 
30 (1975).
---------------------------------------------------------------------------

    Interested persons are invited to submit written data, views, and 
arguments regarding whether the Proposed Rule Change should be approved 
or disapproved on or before March 28, 2018. Any person who wishes to 
file a rebuttal to any other person's submission must file that 
rebuttal on or before April 11, 2018. Comments may be submitted by any 
of the following methods:

Electronic Comments

     Use the Commission's internet comment form (http://www.sec.gov/rules/sro.shtml); or
     Send an email to [email protected]. Please include 
File Number SR-OCC-2017-022 on the subject line.

Paper Comments

     Send paper comments in triplicate to Secretary, Securities 
and Exchange Commission, 100 F Street NE, Washington, DC 20549.

All submissions should refer to File Number SR-OCC-2017-022. 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 (http://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 10:00 a.m. and 
3:00 p.m. Copies of such filing also will be available for inspection 
and copying at the principle office of OCC. All comments received will 
be posted without change. Persons submitting comments are cautioned 
that we do not redact or edit personal identifying information from 
comment submissions. You should submit only information that you wish 
to make available publicly.
    All submissions should refer to File Number SR-OCC-2017-022 and 
should be submitted on or before March 28, 2018. If comments are 
received, any rebuttal comments should be submitted on or before April 
11, 2018.

    For the Commission, by the Division of Trading and Markets, 
pursuant to delegated authority.\96\
---------------------------------------------------------------------------

    \96\ 17 CFR 200.30-3(a)(12).
---------------------------------------------------------------------------

Robert W. Errett,
Deputy Secretary.
[FR Doc. 2018-04624 Filed 3-6-18; 8:45 am]
 BILLING CODE 8011-01-P