As per NSE’s latest circular, the lot sizes for certain index derivative contracts are being revised to align with SEBI’s guidelines. This change is aimed at reducing contract value and margin requirements, making index derivatives more accessible.

Revised Lot Sizes

Note: Lot size for Nifty Next 50 (NIFTYNXT50) remains unchanged at 25 qty.

Expiry-wise Transition Schedule

Note: The March 2026 contract, though introduced earlier, will reflect the revised lot size from December 30, 2025 (EOD), as it becomes the far-month contract post the December expiry.

What You Should Know

• The new lot sizes will apply from October 28, 2025 (EOD) for all weekly and monthly contracts expiring in January 2026 or later.

• The new lot sizes will apply from December 30, 2025 (EOD) for all quarterly and half-yearly contracts, including March 2026 and later expiries.

• Margin requirements and contract values may change after the revision.

• The intraday spread order book will not be available for the following contract combinations:

  • November 2025 – January 2026

  • December 2025 – January 2026

  • December 2025 – February 2026

Action Required: Align Open Positions

• If you hold positions in contracts affected by the lot size change, please do one of the following before the close of trading on December 24, 2025:

  • Adjust the quantity (by reducing it) to a multiple of the new lot size (e.g., NIFTY to 65, BANKNIFTY to 30)

  • Or square off the position

• From December 26, these contracts will be available only for square-off. You will not be able to modify or increase positions.
• On December 29 and 30, any remaining unadjusted quantity may be squared off on a best-effort basis to align with the revised lot structure.
• Unaligned quantities that do not match the new lot size will not be visible or tradable on the platform.

For detailed guidelines, refer to this circular.