Changes in Lot Size

When will the new lot sizes for derivative contracts be effective?

As per the National Stock Exchange (NSE) in its circular FAOP70616, the revised lot sizes for NSE will come into effect after trading ends on October 28,2025. Although, the current lot sizes will remain in effect for all weekly and monthly index derivative contracts until their expiry on December 30, 2025.

While in the previous revision dated November 2024, the new lot sizes changes applied to all the index derivative contracts introduced after November 21, 2024. Existing weekly and monthly contracts continued with their current lot sizes until expiry. Quarterly and half-yearly contracts had been revised to their new lot sizes on specific dates in December 2024.