As per the changes, the expiry date of all Nifty futures and options (F&O) contracts will be moved from Thursday to Monday. The changes will be effective from April 5, 2025. Both the weekly and monthly expiry contracts will be impacted by this major change. The National Stock Exchange of India (NSE) has announced a significant change in the expiry day of index and stock derivatives contracts. This revision, set to take effect from April 04, 2025, aims to streamline trading operations and enhance market efficiency. Starting September 1, 2025: The first Nifty weekly contract expires on September 2, 2025, Tuesday. The first Sensex weekly contract expires on September 4, 2025, Thursday. Check NSE and BSE circulars for complete details. The new Monday expiry index structure was scheduled to take effect from April 5, 2025, affecting both weekly and monthly Nifty 50 expiry dates. This change aimed to streamline the F&O expiry date across derivatives and enhance market efficiency.