{"id":35062,"date":"2026-08-03T15:21:00","date_gmt":"2026-08-03T09:51:00","guid":{"rendered":"https:\/\/www.fundsindia.com\/blog\/?p=35062"},"modified":"2026-08-05T15:39:50","modified_gmt":"2026-08-05T10:09:50","slug":"introduction-of-closing-auction-session","status":"publish","type":"post","link":"https:\/\/www.fundsindia.com\/blog\/investor-key-notes\/introduction-of-closing-auction-session\/35062","title":{"rendered":"Introduction of Closing Auction Session (CAS)"},"content":{"rendered":"\n

Investors are requested to note, as per the latest Exchange guidelines, a Closing\u00a0\u00a0Auction Session (CAS) will be introduced in the equity cash segment for stocks with\u00a0\u00a0Futures & Options (F&O) contracts, effective\u00a03 August 2026<\/strong>. The CAS will be conducted\u00a0\u00a0from 3:15 PM to 3:35 PM on all trading days in the following phases.<\/p>\n\n\n\n

NSE has released a communique “Introduction of Closing Auction Session (CAS) in the\u00a0\u00a0Equity Cash segment”\u00a0dated on\u00a0May 29,2026.\u00a0

As per the latest Exchange guidelines, a Closing Auction Session (CAS) will be introduced in\u00a0\u00a0the equity cash segment for stocks with Futures & Options (F&O) contracts, effective\u00a03\u00a0\u00a0August 2026<\/strong>.

What is Changing?<\/strong>
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<\/strong> on all trading days in the following phases:
<\/p>\n\n\n\n

Session<\/th>Particulars<\/th>Start Time<\/th>Duration<\/th><\/tr><\/thead>
1<\/td>Reference price calculation \/\u00a0Transition from CTS to CAS\u00a0<\/td>3:15 PM<\/td>5 mins<\/td><\/tr>
2<\/td>Order entry period \u2013 for both limit\u00a0and market orders\u00a0<\/td>3:20 PM<\/td>5 Mins<\/td><\/tr>
3<\/td>Order entry period only for limit\u00a0orders, no modification\/
cancellation for market orders,\u00a0Random Close in the last 2 minutes\u00a0<\/td>		3:25 PM<\/td>5 Mins<\/td><\/tr>
4<\/td>Order match<\/td>3:20 PM<\/td>5 Mins<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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.<\/em><\/p>\n\n\n\n


Revised Market Timings:<\/strong><\/strong><\/p>\n\n\n\n

Segment<\/strong><\/th>Market Closing Time<\/strong><\/th><\/tr><\/thead>
Equity Cash Market (F&O Stocks)<\/td>Continuous trading ends 3:15 PM; closing price is determined via the CAS auction through 3:35 PM<\/td><\/tr>
Equity Derivatives (Futures & Options)<\/td>3:40 PM<\/td><\/tr>
Equity Cash Market (Non-F&O Stocks)<\/td>No Change – 3:30 PM<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

\n
\n
\n

Intraday Auto Square-off Timings:<\/strong><\/strong>
Kindly note the following Funds India internal risk policy timings for auto square-off ahead of the revised market timings:<\/p>\n<\/div><\/div>\n\n\n\n

     F&O Stocks:<\/strong> 3:00 PM \n     Non-F&O Stocks:<\/strong> 3:15 PM <\/pre>\n\n\n\n
We request you to take note of these revised timings while planning your trades.

Kindly refer to NSE Circulars:<\/strong>
NSE\/CMTR\/74466<\/a>, NSE\/FAOP\/74467<\/a> & FAQ<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Investors are requested to note, as per the latest Exchange guidelines, a Closing\u00a0\u00a0Auction Session (CAS) will be introduced in the equity cash segment for stocks with\u00a0\u00a0Futures & Options (F&O) contracts, effective\u00a03 August 2026. The CAS will be conducted\u00a0\u00a0from 3:15 PM to 3:35 PM on all trading days in the following phases. NSE has released a […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1052],"tags":[],"yoast_head":"\nIntroduction of Closing Auction Session (CAS)<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.fundsindia.com\/blog\/investor-key-notes\/introduction-of-closing-auction-session\/35062\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Introduction of Closing Auction Session (CAS)\" \/>\n<meta property=\"og:description\" content=\"Investors are requested to note, as per the latest Exchange guidelines, a Closing\u00a0\u00a0Auction Session (CAS) will be introduced in the equity cash segment for stocks with\u00a0\u00a0Futures & Options (F&O) contracts, effective\u00a03 August 2026. 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