Mumbai, Sept. 4 -- The Securities and Exchange Board of India (SEBI) will review the methodology used to determine settlement prices for derivative contracts on expiry following feedback received after the introduction of the Closing Auction Session (CAS) in the equity cash segment.

SEBI had introduced CAS with effect from 3 August 2026 for determining the closing price of securities. Before CAS, the closing price of eligible stocks was determined using the volume-weighted average price (VWAP) of trades executed during the last 30 minutes of continuous trading. Under the new mechanism, the closing price is determined through a dedicated auction session, designed to aggregate buy and sell interest and improve price discovery.

Under the C...