Description

BSE has scheduled a mock trading session for Equity Derivatives segment on January 10, 2026, including testing of NSE-BSE interoperability mechanism for business continuity.

Summary

BSE has scheduled a mock trading session for the Equity Derivatives segment on Saturday, January 10th, 2026. The session will run from 10:15 AM to 02:00 PM and includes testing of the new BOLT Pro TWS version 12.50. Additionally, BSE and NSE will test the interoperability mechanism mandated by SEBI, where an outage will be simulated at NSE and BSE will serve as the alternate trading venue for NSE exclusive securities. Trading members are encouraged to participate actively to test their trading applications and various functionalities including exceptional market conditions.

Key Points

  • Mock trading session scheduled for Saturday, January 10th, 2026
  • New BOLT Pro TWS version 12.50 will be released (details in separate circular)
  • Testing of NSE-BSE interoperability mechanism with simulated NSE outage
  • Trading members using third-party platforms or in-house ETI API systems can test their applications
  • Mock trades will not create any margin, pay-in/pay-out obligations, rights, or liabilities
  • Members must provide feedback by 2:00 PM on the same day
  • BSE will be invoked as alternate trading venue for NSE exclusive securities during the test

Regulatory Changes

This circular implements the ongoing requirements from SEBI circular SEBI/HO/MRD/TPD/P/CIR/2024/167 dated November 28, 2024, which mandated BSE and NSE to establish an interoperable mechanism ensuring business continuity by providing an alternative trading venue. BSE previously implemented this via circular no 20250328-19 dated March 28, 2025.

Compliance Requirements

  • Trading members are requested to participate actively in the mock trading session
  • Members should test their trading applications during the mock session
  • Members using third-party trading platforms or in-house developed systems through ETI APIs should utilize this opportunity
  • Feedback must be submitted by 2:00 PM on January 10, 2026
  • Members should be prepared for the simulated NSE outage scenario and BSE invocation as alternate venue
  • Contact BSE Helpdesk (022-45720400/600 & 022-69158500) or Tech Support (022-22728053) for queries

Important Dates

January 10, 2026 - Mock Trading Schedule:

  • 10:15 AM - 11:15 AM: Log-in session
  • 11:00 AM - 11:07/08 AM: Pre-Open Order Entry period (random stoppage in last 1 minute)
  • 11:08 AM - 11:12 AM: Order Matching period
  • 11:12 AM - 11:15 AM: Buffer period
  • 11:15 AM - 02:00 PM: Continuous Trading session
  • 02:10 PM: Trade modification deadline
  • By 02:00 PM: Feedback submission deadline

Impact Assessment

Market Impact: None - This is a mock trading session with no real market impact. All trades executed during the session are purely for testing purposes and will not result in any actual obligations, settlements, or rights.

Operational Impact: Low - Members have the opportunity to test their systems, familiarize themselves with new platform versions, and prepare for potential business continuity scenarios. The interoperability testing between BSE and NSE ensures market participants are prepared for actual outage scenarios, enhancing overall market resilience.

Technical Impact: Members can test various functionalities including risk-reduction mode, trading halt scenarios, and the new BOLT Pro TWS version 12.50. The simulated NSE outage and BSE invocation as alternate venue allows members to experience the business continuity mechanism in a controlled environment.

Impact Justification

Routine mock trading session for system testing and familiarization with no real trading obligations or market impact