Description

BSE and NSE will conduct a special mock trading session to test business continuity mechanism where BSE will induce an outage and NSE will serve as alternate trading venue for BSE exclusive securities in Equity Segment.

Summary

BSE has announced a special mock trading session to test the business continuity mechanism for interoperable segments of stock exchanges, as mandated by SEBI circular SEBI/HO/MRD/TPD/P/CIR/2024/167 dated November 28, 2024. During this mock session, BSE will simulate a market outage between 02:15 PM to 02:45 PM, and NSE will be invoked as the alternative trading venue for BSE exclusive securities in the Equity Segment. BSE will resume trading operations between 02:45 PM to 03:15 PM. Members are requested to actively participate in the mock session and provide feedback.

Key Points

  • Mock trading session will test business continuity mechanism for interoperable segments
  • BSE will induce a stoppage of its market between 02:15 PM to 02:45 PM
  • NSE will serve as alternative trading venue for BSE exclusive securities during the outage
  • Only applicable BSE exclusive securities will be activated at NSE
  • BSE will resume trading operations between 02:45 PM to 03:15 PM
  • Members should place orders at both exchanges, especially for BSE exclusive securities
  • Feedback should be provided at bsehelp@bseindia.com
  • Mock session timings can be referred in notice no 20251211-53 dated December 11, 2025

Regulatory Changes

This mock session implements the mechanism established per SEBI circular SEBI/HO/MRD/TPD/P/CIR/2024/167 dated November 28, 2024, which directed BSE and NSE to establish business continuity for interoperable segments by providing market participants with an alternative trading venue. The mechanism was previously implemented and communicated via BSE circular no 20250328-18 dated March 28, 2025.

Compliance Requirements

  • Members must participate in the mock trading session
  • Members should place orders at both BSE and NSE, particularly for BSE exclusive securities
  • Members should test their systems and connectivity to ensure readiness for actual business continuity scenarios
  • Members must provide feedback on the mock session to bsehelp@bseindia.com
  • Members should refer to BSE circular no 20250328-18 dated March 28, 2025 for detailed information on Business Continuity for Interoperable Segments

Important Dates

  • December 11, 2025: Notice date and scheduled mock trading session date
  • 02:15 PM to 02:45 PM: BSE market outage simulation period; NSE alternate trading venue active
  • 02:45 PM to 03:15 PM: BSE trading operations resume

Impact Assessment

This is a scheduled mock trading session with no impact on live market operations. The exercise is critical for ensuring operational resilience and business continuity in case of actual market disruptions. Members need to test their technical infrastructure and operational procedures to ensure seamless switching between exchanges during actual outage scenarios. The successful execution of this mock session will enhance market confidence in the robustness of the business continuity framework mandated by SEBI.

Impact Justification

Scheduled mock trading session to test business continuity infrastructure as mandated by SEBI; operational preparedness exercise requiring member participation but no live market impact