The National Stock Exchange (NSE) on December 16, 2025, issued a circular regarding the revision in Scheme of Strikes in Long dated Index Options – NIFTY.
This is in reference to Chapter 1.10 Strike scheme in Exchange circular reference number NSE/FAOP/67775 dated April 30, 2025 regarding modification of strike scheme and periodic review for discontinuation of illiquid strikes in NIFTY 50 Long Term Index Options.
Based on semi-annual review, the changes shall be effective from December 31, 2025 for NIFTY 50 Long Term Index Options.
Members are advised to load the updated contract.gz and NSE_FO_contract_ddmmyyyy.csv.gz file in the trading application before trading on the effective date. This file can be obtained from the directory faoftp/faocommon on the Extranet server. Additionally, members can access the MII contract file - NSE_FO_contract_ddmmyyyy.csv.gz on the website path :- https://www.nseindia.com/all-reportsderivatives
[Circular No: 214/2025]
