Description

NSE announces revised mock trading timings for November 22, 2025 to test NEAT+ 7.8.6 and Pre-Open session in F&O segment. Version 7.8.5 to be discontinued.

Summary

NSE has issued an update modifying the mock trading timings for Saturday, November 22, 2025. The Exchange will introduce NEAT+ version 7.8.6 and discontinue version 7.8.5 during this session. Members are required to conduct mock trading across three sessions to test the new Pre-Open session functionality in the Futures & Options segment. All trading members are encouraged to actively participate using the latest NEAT+ 7.8.6 version.

Key Points

  • Mock trading session scheduled for Saturday, November 22, 2025 with revised timings
  • NEAT+ version 7.8.6 will be introduced, replacing version 7.8.5
  • Three trading sessions planned: Session-1 with Pre-Open (09:00-11:10), Session-2 without Pre-Open (14:15-15:15), Session-3 from DR Site (16:00-16:40)
  • Pre-Open session timing: 09:00 hrs open, 09:53 hrs close with random closure in last minute
  • Normal market timing in Session-1: 10:00 hrs open, 11:00 hrs close, 11:10 hrs trade modification end
  • Live re-login window: 17:30-18:00 hrs
  • NEAT+ 7.8.6 available for download from November 21, 2025 at 19:00 hrs
  • Pre-Open applicable only for November and December month futures contracts (FUTIDX & FUTSTK)
  • Orders and trades from Session-1 will not carry over to Session-2

Regulatory Changes

This circular partially modifies NSE/FAOP/71383 dated November 20, 2025, specifically revising mock trading timings. It implements the Pre-Open Session in Equity Derivatives (F&O) Segment as announced in circular NSE/FAOP/71092 dated November 03, 2025. The Exchange enforces a mandatory version migration policy requiring all members to discontinue NEAT+ 7.8.5 after the November 22, 2025 mock session.

Compliance Requirements

  • Mandatory Software Upgrade: Members must download and install NEAT+ version 7.8.6 from NSE Extranet path /faoftp/faocommon/NEATPlus786 before the mock session
  • Active Participation: Members are strongly encouraged to participate actively in all three trading sessions
  • Pre-Open Testing: Members must use NEAT+ 7.8.6 to place orders during Pre-Open session in Trading Session-1
  • Version Usage: From November 22, 2025 onwards, only NEAT+ versions 7.8.4 and 7.8.6 will be supported
  • Master File Access: Members should download master files (contract.gz, NSE_FO_contract_22112025.csv) from NSE Extranet path /faoftp/faocommon/Mock/22Nov2025 by 08:30 hrs on November 22, 2025

Important Dates

  • November 21, 2025, 19:00 hrs: NEAT+ version 7.8.6 available for download
  • November 22, 2025: Mock trading session and NEAT+ 7.8.5 discontinuation date
    • Trading Session-1: 09:00-11:10 hrs (with Pre-Open)
    • Trading Session-2: 14:15-15:15 hrs (without Pre-Open)
    • Trading Session-3: 16:00-16:40 hrs (DR Site, without Pre-Open)
    • Live Re-login: 17:30-18:00 hrs
  • December 06, 2025: Scheduled discontinuation date for NEAT+ version 7.8.4 (mock)

Impact Assessment

Operational Impact: All F&O trading members must complete technical upgrades and participate in comprehensive testing. The three-session mock structure requires significant resource allocation for Saturday operations. Members failing to upgrade will lose trading capability after November 22, 2025.

Market Operations Impact: Introduction of Pre-Open session in F&O segment represents a significant workflow change for November and December futures contracts. The staggered session approach allows thorough testing of both Pre-Open and regular trading scenarios, including disaster recovery site operations.

Technical Impact: Version migration affects all NEAT+ users, requiring installation, configuration, and testing. The 30-minute live re-login window provides limited time for issue resolution. Members must ensure compatibility and familiarize themselves with any interface or functionality changes in version 7.8.6.

Risk Mitigation: The mock session structure minimizes live market disruption by testing new features in a controlled environment. However, members face operational risk if they don’t adequately prepare or encounter technical issues during the transition.

Impact Justification

Medium importance as it affects all F&O trading members who must upgrade to NEAT+ 7.8.6 and participate in mandatory mock session for Pre-Open testing. Impact is medium as it's operational preparation for new features.