NSE Announces Changes to Derivative Contract Lot Sizes
The National Stock Exchange (NSE) has announced changes to the market lot size of derivative contracts on select indices. The revised lot sizes will come into effect from October 28, 2025, and will apply only after the December 30, 2025 expiry for weekly and monthly contracts.
NSE has instructed its members to inform clients about the upcoming lot size changes. The lot size for Nifty Next 50 will remain unchanged at 25. However, the lot size for Nifty Mid Select will be reduced from 140 to 120, and the lot size for Nifty 50 will be reduced from 75 to 65. Additionally, the lot size for Nifty Financial Services will be reduced from 65 to 60, and the lot size for Bank Nifty will be reduced from 35 to 30. The day spread order book will be temporarily disabled for select contract combinations during this transition.
Traders and investors are advised to update their trading strategies and positions accordingly, as the revised lot sizes will impact their trading activities. The exact date when the new lot sizes become valid for the mentioned contract variants is not provided, but they will be effective from October 28, 2025, for most contracts.
