GENERAL29 Sept 2026
Nifty monthly expiry meets CAS today: Why the last 30 minutes of the Tuesday trading session could be most important | Stock Market News
SEBI proposed on 12 September to change how expiry-day settlement prices are set, using the last 30 minutes of normal trading plus 10 minutes of the closing auction. Nifty faces both weekly and monthly options expiry today, and the Closing Auction Session (CAS) is adding to the swings. Traders in futures and options feel this most. Avoid last-minute orders and watch the final closing level.
Key Statutory Highlights
- Nifty is set for both weekly and monthly futures and options expiry today, which can lead to sharp position adjustments and more volatility towards the close.
- The Closing Auction Session (CAS) runs every trading day from 3:15 PM to 3:35 PM, right after the regular market closes at 3:15 PM.
- SEBI's consultation paper of 12 September suggested that expiry-day settlement prices for index and stock derivatives could use trades from the last 30 minutes of the continuous trading session and 10 minutes of the CAS.
Actionable Advice for Taxpayers / Founders:If you trade futures or options, plan your expiry-day orders in advance and be careful with large last-minute trades, since the final closing level may not match what you expect.
Statutory Disclaimer: TaxQue Shorts are AI-assisted editorial briefs for compliance awareness. This brief has not passed every source check; confirm the original notification before acting. This does not constitute formal legal or CA counsel.
TaxQue News Desk
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