Changes in Expiry Day for Index Derivatives on BSE & NSE

The National Stock Exchange (NSE) in circular NSE/FAOP/65336 and the Bombay Stock Exchange (BSE) in circular 20241128-70 have announced significant changes to the expiry days for index derivative contracts. Starting January 1, 2025 – All NSE index derivatives including for Banknifty, Finnifty, Midcapnifty and Niftynxt50 will have monthly expiry on last Thursday of every month. No change for Nifty contracts have been made.

Similarly all BSE index derivatives including for Sensex, Bankex and Sensex50 will have expiry day revised to Tuesday of every week for Sensex weekly contracts and last Tuesday of every month for all monthly contracts.

Let’s Explore the Revisions in detail:

Why the Change?

The shift in expiry isn’t random—it reflects SEBI’s focus on reducing market risks and speculative activity. By limiting weekly expiries and increasing contract sizes, SEBI aims to bring stability and better protect retail traders, ensuring the market remains robust and less vulnerable to excessive volatility.

How should you be prepared for the change?

1. Revise Trading Strategy
   If you’re active in derivatives trading, this new expiry schedule calls for a trading plan update. For instance, with Sensex weekly expiries now on Tuesdays, traders need to align their hedging strategies and position adjustments earlier in the week.
2. Keep an Eye on Liquidity Trends
   Expiry day changes may lead to shifts in market liquidity patterns. For instance, trading volumes and volatility could surge as Tuesday approaches, compared to Fridays in the past.