The National Stock Exchange (NSE) has said that its market share in equity options has climbed sharply from 76.9% to 87%, following the recent shift of the Nifty weekly F&O expiry from Thursday to Tuesday, according to a statement given to CNBC-TV18. The exchange noted that the change has strengthened participation and improved overall liquidity in the options market.
Earlier, the NSE officially confirmed a major restructuring of the derivatives expiry cycle. Approved by SEBI, the new framework moves the weekly expiry for all F&O contracts to Tuesdays, replacing the long-standing Thursday window. The revised schedule comes into effect from September 27, 2025, and applies to all equity derivative contracts traded on the NSE platform.
Meanwhile, the BSE clarified that its existing expiry schedule will remain unchanged for contracts expiring on or before August 31, 2025. However, derivative contracts expiring after September 1, 2025 may shift to a Thursday expiry, effectively creating a divergence between both major exchanges.
The market-wide transition is expected to influence trading volumes, volatility patterns and hedging strategies as traders adjust to the new expiry dynamics.
This is a developing story and will be updated as more details emerge.
