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    New Updates In Futures & Options

    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.

    What are the new lot sizes for index derivatives? When will the new lot sizes for weekly and monthly contracts be effective? What happens to existing contracts during the transition? Can different lot sizes co-exist in the same month? How do the new lot sizes impact margin requirements? What other changes has SEBI introduced in the F&O segment? What is the rationale behind the changes in Futures and Options new rules mentioned in circular dated November 2024? What are the implementation dates for the new changes? What is revised expiry schedule for NSE contracts? What is revised expiry schedule for BSE contracts? What is the change in lot size for long dated and do I need to square off my long-dated positions?