CIRCULAR
SEBI/HO/MRD/MRD-PoD-2/P/CIR/2024/131 October 01, 2024
To
All Recognized Stock Exchanges
All Recognized Clearing Corporations
Sir/Madam,
Subject: Review of Stress Testing Framework for Equity Derivatives segment for
determining the corpus of Core Settlement Guarantee Fund (Core SGF)
Background
1. SEBI vide Chapter 3 Master Circular No. SEBI/HO/MRD2/PoD-2/CIR/P/2023/171 dated
October 16, 2023, has, inter-alia, laid down guidelines for determining the credit
exposure of Clearing Corporations (CCs) towards its participants.
2. In this regard, SEBI has specified the stress testing methodologies to be adopted for
determining the credit risk of a CC towards its participants. The current stress testing
methodologies are grouped into hypothetical and historical scenarios.
3. For the equity derivatives segment, the stress testing methodologies prescribed by SEBI
for determining loss on close-out of client/proprietary positions, under hypothetical and
historical stress scenarios, comprising of price movement in respect of each underlying,
are tabulated below:
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Table-1
Scenario Direction Movement
1a Up PSR + 1.51 x sigma (λ=0.995) x √2
1b Up PSR + 1.51 x sigma (λ=0.94) x √2
2a Down – PSR – 1.51 x sigma (λ=0.995) x √2
2b Down – PSR – 1.51 x sigma (λ=0.94) x √2
3 Up Max 1 day rise over past 10 years
4 Down Max 1 day fall over past 10 years
1. Multiple of 1.5 for indices and 1.75 used stocks
Adoption of new stress testing methodologies
4. Taking into account the changing market dynamics of the equity derivatives segment,
with a view to have a more comprehensive understanding of the prevalent tail risk in the
equity derivatives segment, SEBI, after consultation with relevant market participants in
its Risk Management Review Committee, has decided to introduce the following
additional hypothetical stress testing scenarios/methodologies for determining the
Minimum Required Corpus (MRC) of Core SGF in the equity derivatives segment:
4.1. Stressed VaR
4.1.1. Uses the variance-covariance matrix from a stress period to determine the price
movements of the underlying.
4.1.2. Volatility observed during the stress period is to multiplied by a factor of 2.
4.1.3. Montecarlo simulations are carried out assuming multivariate normality of daily
returns.
4.1.4. The resultant figure gives the price movement for each underlying.
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4.1.5. For revaluing options, the volatility would be shocked by 100% for each
underlying.
4.2. Filtered Historic Simulation
4.2.1. Adjust past data in a way so that it captures the prevailing volatility.
4.2.2. Historical returns are divided by contemporaneous estimated volatility and then
multiplied by latest estimate of volatility.
4.2.3. For this purpose, volatility is calculated as Exponentially Weighted Moving
Average (EWMA) with λ = 0.94.
4.3. Factor Model
4.3.1. Highest 3-day, close to close, movement of NIFTY, upwards and downwards, is
to be considered based on historical data since 2000.
4.3.2. The said highest upwards and downwards movement of NIFTY are multiplied by
the beta (β) of the stock from a stress period to arrive at a figure representing
price movement for each underlying.
4.3.3. For revaluing options, the volatility would be shocked by 100% for each
underlying.
5. Choice of stress period
5.1. For each of the above stress testing models, the data for modeling
returns/movements in each underlying shall be based on stress period(s), as
specified by the CCs.
5.2. Further, the CCs shall jointly frame a policy on updation and review of stress periods
and get it approved by their respective Risk Committees.
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5.3. Additionally, for the above models, a Stress Period of Risk (SPOR) of 3 days would
be considered (i.e. non-overlapping return movements over a period of 3 days would
be considered).
6. Inter-segment transfer of funds from Core SGF
6.1. With a view to cater to increase in the initial MRC requirement of equity derivatives
segment after adoption of new stress testing methodologies, as outlined at para (4)
above, a one-time inter-segment transfer of funds would be allowed to CC subject to
the following framework:
6.1.1. If average stress loss applicable for the month < 50% of the applicable MRC of
the month, in the equity cash segment for the last 12 months, then CCs can
transfer upto 100% of the additional amount available over and above the MRC
of the month, from the Core SGF of the equity cash segment (ECM) and transfer
it to the Core SGF of equity derivatives segment (EDX).
6.1.2. For inter-segment transfer, CC's shall be required to maintain minimum 50% of
MRC, exchanges shall be required to maintain 25% (as per their volume) and
25%-member contribution may be attributed to the Parent Exchange, in the
remaining Core SGF of ECM, from which the money is being transferred. The
amount remaining in ECM segment beyond the limits stated above, will be the
excess money, available for transfer, for the respective Market Infrastructure
Institution (MII).
6.1.3. This excess amount can be transferred from ECM segment to EDX segment and
can be allocated to the contributions under the head of respective MIIs only.
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6.1.4. In addition, since contribution requirements to ECM are irrespective of penalties,
all CCs shall be permitted a one-time transfer of penalties and the interest
accrued thereon in ECM to EDX segment. It will be transferred under Penalty
head in the EDX segment.
Illustration
Table-2
MRC for Total Core Total SGF Average stress Upper limit of the
current SGF in the Corpus – loss for each amount that can
Month segment MRC for month since be transferred to
(A) (B) the month past 12 months# Core SGF of
(C=B-A) (single figure equity derivatives
shown for segment, if (D) for
simplifying the each of the last 12
example) (D) months < 50% (A)
(E =100% of C)
100 200 100 30 100
# CCs will have to check for each month for the last 12 months
6.2. Any inter-segment transfer of core SGF funds should be carried out after a CC has
taken approval from its Risk Committee.
7. Additional contribution to the Core SGF of equity derivatives segment:
7.1. As per the extant directions, by 15th of every month, CC shall review and determine
the MRC for next month based on the results of daily stress tests of the preceding
month.
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7.2. The MRC for next month shall be higher of the average of all daily worst case loss
numbers arrived in at 7.1. above and the segment MRC as per any previous review.
CCs shall also review and determine by 15th of every month, the adequacy of
contributions made by various contributors and any further contributions to the Core
SGF required to made by such contributors.
7.3. Initially, the additional contribution to Core SGF, based on the MRC requirements on
an ongoing basis as per the stress testing methodologies stated at para (4) above,
shall be brought in by the contributors, within 4 months from the month of issue of
this circular (i.e. on or before February 01, 2025).
7.4. The initial additional contribution so required shall be based on highest average
stress loss, as per all the stress testing methodologies, witnessed since the month
of January 2024 till the preceding month of the issuance of this circular.
7.5. Additionally, for the purpose of one-time inter-segment transfer and for the purposes
of making additional contributions to the Core SGF of equity derivatives segment,
the penalties credited to the Core SGF and the interest accrued on such penalties,
as on last day of month of issuance of this circular, shall also be taken into account.
Therefore, additional contribution would have to be brought in if MRC of next month
> [MRC of current month + Penalties credited (including one time penalties
transferred from SGF of cash segment) and interest accrued on such penalties as
on last day of the month of issuance of this circular].
8. Staggered contributions to the Core SGF of equity derivatives segment:
8.1. Further, on an ongoing basis, the subsequent contributions (after the initial
contribution) to the Core SFG, based on monthly MRC requirements, can be made
by the contributors in a staggered manner. CCs shall put in place a detailed
framework in this regard.
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8.2. It is clarified that the above provision, outlined at para 8.1. above, is only for the
purpose of bringing in additional contribution for the Core SGF in a staggered
manner. It is reiterated that the MRC requirement for the next month shall continue
be based on provisions outlined at para 7.2. above.
8.3. Clearing Corporations would be required to display information on any difference
between the required contribution for the month and the contribution actually made,
along with their monthly Core SGF data on their websites.
9. Coverage of stress losses
9.1. The stress testing methodologies would be applied uniformly across all CCs
providing clearing and settlement services in the equity derivatives segment.
9.2. However, for the purpose of applicability of a cover-n standard, the CCs offering
clearing and settlement services in the equity derivatives, segment will be
segregated into 2 categories:
9.2.1. Category A - CC having equal to or more than 40% of the share of clearing
volumes in equity derivatives segment.
9.2.2. Category B - CC having less than 40% of the share of clearing volumes in equity
derivatives segment.
9.3. For the purpose of above categorization, the clearing volumes shall be based on
daily average value (in Rs. crores) of contracts cleared by the CCs in the equity
derivatives segment for each financial year. Sum of futures turnover and notional
options turnover will be considered for this purpose.
9.3.1. CCs offering clearing and settlement services in the equity derivatives segment,
shall jointly decide on their categorization. Initially, CCs, by means of a joint
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communication, shall inform their respective categorization to SEBI within 7 days
of issuance of this circular.
9.3.2. Subsequently, CCs offering clearing and settlement services in the equity
derivatives segment shall, within 15 days from the end of each financial year,
shall inform SEBI about their respective categorization, by means of a joint
communication.
9.4. For CCs classified as Category B, as per the provisions of para 9.2. above, credit
exposure shall be calculated by considering a simultaneous default of at least 2
clearing members (and associates) causing the highest credit exposure.
9.5. For a CC classified as category A, as per the provisions of para 9.2. above, credit
exposure shall be calculated as follows:
9.5.1. By considering simultaneous default of at least 3 clearing members (and
associates) causing the highest credit exposure, OR
9.5.2. INR 10,500 crores, whichever is higher.
10. The existing hypothetical and historical stress testing methodologies for determining the
MRC of the Core SGF in the equity derivatives segment shall continue to exist along with
the new stress testing methodologies introduced vide this circular.
11. Clearing Corporations and stock exchanges are directed to:
11.1. Formulate a joint (Standard Operating Procedures) SOP document, within 30 days
from the date of issue of this circular, pertaining to the following aspects of the said
circular and get it approved by their respective Risk Committees:
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11.1.1. Specifying the initial stress period(s)
11.1.2. Specifying operational aspects and detailed implementation mechanism of the
new stress testing models.
11.1.3. Specifying the framework for updation and revision of stress periods.
11.1.4. Specifying the methodologies to be adopted for calculating stress losses for
stocks where data is not available for the chosen stress period(s)
11.1.5. Specifying the framework for making staggered contributions to the Core SGF.
11.1.6. Any other operational aspect of this circular.
11.2. Take necessary steps to put in place systems for implementation of the circular,
including necessary amendments, wherever required, to the relevant bye-laws, rules
and regulations.
11.3. Bring the provisions of this circular to the notice of their members and also disseminate
the same on its website.
12. The circular is being issued in exercise of powers conferred under Section 11 (1) and
Section 11(2)(a) of the Securities and Exchange Board of India Act, to protect the
interests of investors in securities and to promote the development of, and to
regulate the securities market and regulate business in stock exchanges and any other
securities markets.
Yours faithfully,
Vishal Shukla
General Manager
Market Regulation Department
Tel.No: 022-26449959
Email: vishals@sebi.gov.in
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