New stock market timings from August 3: What has changed?

From August 3, Sebi introduces a Closing Auction Session for F&O-eligible stocks, with the auction-discovered price becoming the official closing price.

Regular trading for F&O-eligible stocks ends at 3:15pm; the Closing Auction Session runs from 3:20pm to 3:35pm, including order entry, matching, and random closure in the final two minutes.

Equity derivatives segment trading hours are extended by 10 minutes, now continuing until 3:40pm, while other segments remain unchanged.

The pre-open session is revised: order entry from 9:00am to 9:07am and order matching from 9:07am to 9:15am.

Sebi says the changes aim to ensure fair and transparent closing prices, improve execution efficiency, reduce tracking errors for passive funds, and align with global best practices.