The National Stock Exchange (NSE) on May 08, 2026, issued the notification regarding the Mock trading on Saturday, May 09, 2026 – New version of NEAT+ 7.8.8 for Futures and Options.
The following has been stated namely: -
• National Stock Exchange of India Limited will conduct a mock trading session in the Futures & Options (F&O) segment on Saturday, May 09, 2026 to test new market data broadcast parameters introduced via circular NSE/MSD/74133.
• The mock session has two phases:
o Session 1 (Primary Site): 10:00 AM to 2:00 PM
o Session 2 (DR Site / Disaster Recovery): 2:45 PM to 4:10 PM
Live re-login window: 6:30 PM to 7:00 PM.
• Two NEAT+ versions are specified:
o Version 7.8.7 → supports only existing broadcast parameters; discontinued after June 06, 2026 mock.
o Version 7.8.8 → supports only the new broadcast parameters and should be used going forward.
• Members using NEAT Adapter must use:
o NEAT Adapter Version 1.0.27 (Windows/Linux)
o Applicable GR Port: 10833 for F&O segment connectivity.
• The new Reversal Trade Cancellation Mechanism (RTCM) for Equity & Equity Derivatives (5 trading-day horizon) will be available during this mock session and becomes effective from May 11, 2026.
[Notification No. NSE/FAOP/74134]
