SEBI to Review Derivative Settlement Price Methodology

MUMBAI, India — The Securities and Exchange Board of India (SEBI) announced on September 3, 2026, that it will issue a public consultation paper within approximately one week proposing changes to the methodology used for determining settlement prices of derivative contracts. The decision follows a review of the market's initial experience with the Closing Auction Session (CAS) framework, which was implemented across equity cash markets on August 3, 2026. The upcoming regulatory paper aims to address market feedback regarding price discovery and settlement mechanics on expiry days.

Evaluation of Closing Auction Session Framework

Under the operational guidelines introduced in August 2026, the closing price calculated during the 20-minute CAS window serves as the official benchmark for settling derivative contracts upon expiration. Following the first full month of operation, market participants, institutional investors, and stockbrokers raised concerns regarding price variance between continuous trading hours and the final auction price, particularly during high-volume derivative expiration windows.

+-------------------------------------------------------------------------------+
|                      SEBI SETTLEMENT METHODOLOGY TIMELINE                     |
+------------------------------------+------------------------------------------+
| Regulatory Authority               | Securities and Exchange Board of India   |
| Implementation Date of CAS         | August 3, 2026                           |
| Initial Review Period              | August 3 – September 3, 2026             |
| Announcement Date                  | September 3, 2026                        |
| Expected Consultation Paper Release| Within ~1 Week (Mid-September 2026)      |
| Primary Focus Area                 | Derivation of Expiry Settlement Prices   |
+------------------------------------+------------------------------------------+

Market Feedback and Regulatory Response

In response to reports of localized price volatility and execution gaps during expiry windows, SEBI conducted consultation sessions with key capital market stakeholders. These discussions included representatives from domestic brokerages, Foreign Portfolio Investors (FPIs), mutual fund asset managers, and market infrastructure institutions.

The regulator stated that the upcoming consultation paper will detail potential adjustments to the pricing formula or operational parameters of the auction system. The objective is to refine the alignment between cash market closing prices and final derivative settlement prices, minimizing price distortion risks for options and futures traders.

Official Sources Section

The information detailed in this report originates from an official press release issued by the Securities and Exchange Board of India (SEBI) on September 3, 2026, regarding the review of settlement price methodologies following the CAS rollout.

Quote Section

According to official releases issued by SEBI:

"Having considered the experience of the initial period of CAS implementation and the feedback received from various stakeholders, SEBI may be proposing certain changes in the methodology for determination of settlement prices of derivative contracts for which a consultation paper will be issued in about a week."

Why It Matters

• For Derivative Traders: Adjustments to the settlement methodology aim to reduce unexpected price slippage between continuous session trading and final expiry values.

• For Institutional Investors: Clearer pricing frameworks provide improved hedging precision for large-scale equity and index portfolios.

• For Stock Exchanges: Standardized settlement protocols support market stability and reduce risk exposure across clearing corporations during monthly and weekly expiration cycles.

Key Facts at a Glance

• Regulator: Securities and Exchange Board of India (SEBI)

• Subject: Determination methodology for derivative settlement prices

• Trigger: Post-implementation review of the Closing Auction Session (CAS)

• Timeline: Consultation paper scheduled for release in about a week

• Scope: Impacting futures and options contracts linked to cash market closing prices

Frequently Asked Questions

Why is SEBI revising the derivative settlement price methodology?

SEBI is reviewing the process following market feedback regarding price volatility and variances during the newly implemented Closing Auction Session on derivative expiration days.

When will the proposed changes be made public?

SEBI stated that a detailed consultation paper outlining the proposed methodology changes will be issued in about a week.

How are derivative settlement prices currently determined?

Current rules utilize the closing price established through the cash market Closing Auction Session as the reference price for settling expiring derivative contracts.

Source: Official Press Release by Securities and Exchange Board of India (SEBI), Regulatory Notifications on Equity Derivative Settlement Frameworks.