Investors are requested to note, as per the latest Exchange guidelines, a Closing Auction Session (CAS) will be introduced in the equity cash segment for stocks with Futures & Options (F&O) contracts, effective 3 August 2026. The CAS will be conducted from 3:15 PM to 3:35 PM on all trading days in the following phases.
NSE has released a communique “Introduction of Closing Auction Session (CAS) in the Equity Cash segment” dated on May 29,2026.
As per the latest Exchange guidelines, a Closing Auction Session (CAS) will be introduced in the equity cash segment for stocks with Futures & Options (F&O) contracts, effective 3 August 2026.
What is Changing?
The closing price of eligible F&O stocks will now be determined through a dedicated Closing Auction Session (CAS) instead of the current methodology. The CAS will be conducted from 3:15 PM to 3:35 PM on all trading days in the following phases:
| Session | Particulars | Start Time | Duration |
|---|---|---|---|
| 1 | Reference price calculation / Transition from CTS to CAS | 3:15 PM | 5 mins |
| 2 | Order entry period – for both limit and market orders | 3:20 PM | 5 Mins |
| 3 | Order entry period only for limit orders, no modification/ cancellation for market orders, Random Close in the last 2 minutes | 3:25 PM | 5 Mins |
| 4 | Order match | 3:20 PM | 5 Mins |
The Post-close Session in the cash market will continue from 3:50 PM to 4:00 PM, where trades are executed at the determined closing price.
Revised Market Timings:
| Segment | Market Closing Time |
|---|---|
| Equity Cash Market (F&O Stocks) | Continuous trading ends 3:15 PM; closing price is determined via the CAS auction through 3:35 PM |
| Equity Derivatives (Futures & Options) | 3:40 PM |
| Equity Cash Market (Non-F&O Stocks) | No Change – 3:30 PM |
Intraday Auto Square-off Timings:
Kindly note the following Funds India internal risk policy timings for auto square-off ahead of the revised market timings:
F&O Stocks: 3:00 PM
Non-F&O Stocks: 3:15 PM
We request you to take note of these revised timings while planning your trades.
Kindly refer to NSE Circulars:
NSE/CMTR/74466, NSE/FAOP/74467 & FAQ
