Business EconomyPosted at: May 30 2026 5:28PM


NSE extends F&O trading hours by 10 minutes from Aug 3

Mumbai, May 30 (UNI) The National Stock Exchange (NSE) officially announced here on Saturday through a circular that it will extend trading hours for equity derivatives, including futures and options (F&O), by 10 minutes, with effect from August 3, 2026.
According to the revised schedule announced through the circular, equity derivatives trading will now conclude at 3:40 pm instead of the current 3:30 pm.
The NSE circular also stated that the revised schedule is aimed at aligning derivatives market operations with the new closing auction framework being introduced in the cash segment.
According to the NSE circular, the pre-open session timings in the derivatives segment will remain unchanged, with trading beginning at 9:00 am and the pre-open session ending at 9:08 am through a system-driven random closure in the final minute. The normal market session will continue to open at 9:15 am.
The trade modification window will also remain unchanged and will continue until 4:15 pm.
The modification follows NSE’s March 18, 2026, circular introducing the Closing Auction Session (CAS) in the equity cash segment. The closing auction mechanism is designed to facilitate better price discovery for securities at market close and align Indian market practices with global standards.
Corresponding changes are being made in the derivatives segment to accommodate the auction process and ensure smooth settlement and price dissemination, the circular informed.
The NSE circular stated that the functional changes arising from the implementation will be made available for testing during mock trading sessions, adding that a separate circular giving details about mock trading sessions will be issued later.
The NSE stated that it will broadcast a message to brokers on National Exchange for Automated Trading (NEAT) trading terminals, right at the start of the Closing Auction Session in the equity segment, when the operating price range for stock futures is reset. As part of the process, outstanding orders lying outside the revised price range will be cancelled by the NSE in accordance with existing rules.
The exchange stated that any security will cease to be eligible for the Closing Auction Session (CAS) if it is excluded from the equity derivatives segment on both exchanges. In such cases, its closing price will be determined using the existing methodology, based on the volume-weighted average price (VWAP) of trades executed during the last 30 minutes of trading, the circular mentioned.
However, as long as the security remains part of the equity derivatives segment on at least one exchange, it will continue to be eligible for the Closing Auction Session (CAS)
The circular also stated that the NSE will cancel all unexecuted special orders, including stop-loss and disclosed quantity orders. Also, any pending orders that fall outside the revised price band will also be cancelled, with members receiving an appropriate cancellation message, the NSE circular stated.
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