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What is the Closing Auction Session (CAS)?
Why is SEBI introducing the new Closing Auction Session (CAS) framework to define the closing price?
Which stocks are eligible for CAS?
What are the new market timings for CAS stocks?
How are F&O (Derivatives) timings impacted?
What types of orders are allowed during CAS?
What happens to your pending orders from the normal trading session?
What are the price bands during CAS?
How is the final closing price (Equilibrium Price) calculated?
What is the difference between reference, last traded, and closing price?
Will there be any changes to existing margin and Risk Management System (RMS) requirements?
What will be the new MIS auto square off timings?
What changes will you notice as an investor on Share.market once the Closing Auction Session (CAS) is implemented?
What should you keep in mind during CAS?

What will be the new MIS auto square off timings?

Starting August 3, 2026, intraday (MIS) auto square-off timings will change to match the updated exchange trading hours: 

Segment / Asset classNew auto square-off time
NSE & BSE CAS Stocks (F&O-backed stocks)3:00 PM
NSE & BSE Non-CAS Stocks (Non F&O-backed stocks)3:15 PM
F&O Positions3:25 PM

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