The National Stock Exchange of India Limited (NSE), on August 25, 2026, reminded members using NNF to migrate to the new market data broadcast parameters for the Futures & Options (F&O) segment, introduced to accommodate the change in token-level cumulative volume data type from “Unsigned Integer” (4 bytes) to “LONG” (8 bytes).
Members are required to complete the migration, or ensure readiness of their migration plan, before discontinuation of the existing parameters. The existing 5-depth, 1-second refresh market data broadcast parameters for NNF users will be discontinued from September 5, 2026 (mock) onwards.
Members have been advised to review their market data broadcast configurations and implement the necessary changes within the stipulated timeline to ensure uninterrupted receipt of F&O market data broadcasts.
[Circular Ref. No. 58/2026]
