The Securities and Exchange Board of India will review its revised closing-auction-session framework after one year of operation, chairman Tuhin Kanta Pandey said ahead of the system’s scheduled 7 December implementation. The closing auction is intended to create a transparent price-discovery period near the end of the trading day rather than determining the official close solely through the existing calculation process.
SEBI received approximately 20,000 responses during consultation on the proposal. Market participants raised questions covering reference prices, permitted order types, trading cut-off times and the relationship between the cash-market closing price and derivatives settlement. The regulator modified the framework after evaluating those submissions.
Under the revised approach, India will retain a closing auction in the cash-equity market while keeping the closing price used for cash securities separate from the settlement price for expiring derivative contracts during the first year. This separation is designed to limit the immediate operational and market impact on expiry-day settlement. SEBI can reconsider the arrangement after reviewing trading data and participant experience over the initial operating period.
Closing auctions are used in several international markets to concentrate buy and sell orders into a defined end-of-day matching process. They can provide a visible pool of liquidity for index funds, exchange-traded funds and institutional investors that need to transact at or near the official closing price. However, the concentration of large orders also requires safeguards against manipulation, abrupt imbalances and technology failures.
Implementation will require coordinated changes across exchanges, brokers, clearing corporations, custodians and institutional order-management systems. Trading members must account for the auction’s order-entry window, matching logic, cancellation rules and final price dissemination. Asset managers and index-tracking funds will also need to adjust execution algorithms and compliance procedures.
The one-year review gives SEBI a defined period in which to assess participation, liquidity, price volatility, order concentration and any interaction with the derivatives market. Pandey’s remarks did not indicate that the 7 December start date would change. Instead, they confirmed that the regulator intends to treat the initial framework as an operational phase whose performance will be assessed using live-market evidence.
