SEBI revised its Clearing and Settlement framework, introducing a 10-minute Closing Auction Session and altering reference price calculations for securities.
Starting December 7, 2026, closing prices on derivatives expiry days will be calculated using the volume-weighted average price from the final 30 minutes of trading.
The newly introduced Closing Auction Session will run from 3:30 PM to 3:40 PM daily with system-driven random order-entry closures.