The National Stock Exchange (NSE) of India has announced a significant change to its derivatives trading schedule, moving the expiry date for weekly Nifty contracts to Monday of the expiry week. This change will take effect on April 4, 2025. In addition, the expiry for monthly contracts for both indices and stocks will now occur on the last Monday of the expiry month. This shift is expected to intensify competition among stock exchanges, as the NSE aims to strengthen its position in the lucrative derivatives market. Currently, the NSE dominates the index options trading segment, with the total number of contracts traded being approximately 40 times higher than that of the next largest exchange, the Chicago Board Options Exchange. NSE CEO Ashish Chauhan has emphasized the need for all exchanges to adopt a common expiry day for futures and options trading.