Description

BSE schedules mock trading session for Equity Derivatives segment on January 10, 2026, including testing of NSE-BSE interoperability and new BOLT Pro TWS version 12.50.

Summary

BSE has scheduled a mock trading session for the Equity Derivatives segment on Saturday, January 10, 2026. The session will run from 10:15 AM to 2:10 PM, allowing trading members to test their systems including third-party platforms and in-house developed systems. A new BOLT Pro TWS version 12.50 will be released. The session will also test the NSE-BSE interoperability mechanism where BSE serves as an alternative trading venue for NSE exclusive securities during simulated outages.

Key Points

  • Mock trading session scheduled for January 10, 2026 for Equity Derivatives segment
  • Login window: 10:15 AM to 11:15 AM
  • Pre-open session: 11:00 AM to 11:15 AM (order entry, matching, and buffer periods)
  • Continuous trading: 11:15 AM to 2:00 PM
  • Trade modification window until 2:10 PM
  • New BOLT Pro TWS version 12.50 to be released (details in separate circular)
  • Testing of NSE-BSE interoperability mechanism with simulated NSE outage scenario
  • 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

Regulatory Changes

No regulatory changes. This circular implements the existing SEBI directive (SEBI/HO/MRD/TPD/P/CIR/2024/167 dated November 28, 2024) requiring BSE and NSE to establish business continuity mechanisms for interoperable segments.

Compliance Requirements

  • Trading members are requested to participate actively in the mock trading session
  • Members using third-party platforms or in-house systems through ETI APIs should utilize this opportunity for comprehensive testing
  • Members must test various functionalities including risk-reduction mode, trading halt, and exceptional market conditions
  • Feedback must be submitted to BSE by 2:00 PM on January 10, 2026
  • Members should be prepared for the NSE outage simulation where BSE will broadcast: “NSEFO excl contracts avlble frm hh:mm”

Important Dates

  • January 10, 2026: Mock trading session day
    • 10:15 AM - 11:15 AM: Login window
    • 11:00 AM - 11:07/08 AM: Pre-open order entry period
    • 11:08 AM - 11:12 AM: Order matching period
    • 11:12 AM - 11:15 AM: Buffer period
    • 11:15 AM - 2:00 PM: Continuous trading
    • 2:10 PM: Trade modification deadline
    • 2:00 PM: Feedback submission deadline

Impact Assessment

Operational Impact: Minimal to none. This is a voluntary mock trading session conducted on a Saturday (non-trading day) for testing and familiarization purposes only.

Market Impact: No market impact as mock trades do not create actual obligations or liabilities.

Member Impact: Provides valuable opportunity for trading members to test their systems, familiarize themselves with new BOLT Pro version 12.50, and prepare for potential NSE-BSE interoperability scenarios. Members using third-party or in-house trading systems can validate their infrastructure under simulated exceptional market conditions.

Contact Information:

Impact Justification

Routine mock trading session for testing purposes with no real trading obligations or market impact