Description

BSE has scheduled a mock trading session for the Equity segment on Saturday, October 11th, 2025, allowing trading members to test their systems and platforms across various market functionalities.

Summary

BSE has scheduled a mock trading session for the Equity segment on Saturday, October 11th, 2025. This session is designed to allow trading members, including those using third-party trading platforms, to test their trading applications and systems across various functionalities and exceptional market conditions. No new BOLT TWS release is planned for this session.

Key Points

  • Mock trading session scheduled for Saturday, October 11th, 2025
  • Available for all trading members including third-party platform users
  • Testing scope includes call auction sessions, risk-reduction mode, trading halt, and block deals
  • No new BOLT TWS release for this session
  • Feedback required from all members by 2:00 PM on the same day
  • Session covers both T+1 and T+0 trading segments

Trading Session Schedule

Login: 08:15 AM - 08:45 AM

Morning Block Deal Window: 08:45 AM - 09:00 AM

Pre-Open Session:

  • Order Entry: 09:00 AM - 09:08 AM (random stoppage in last 1 minute)
  • Matching Period: 09:08 AM - 09:15 AM

Continuous Trading:

  • T+1 Settlement: 09:15 AM - 12:00 PM
  • T+0 Settlement: 09:15 AM - 11:30 AM

Special Pre-Open for IPO & Re-listed Scrips:

  • Order Entry: 09:00 AM - 09:45 AM (random stoppage in last 10 minutes)
  • Matching Period: 09:45 AM - 10:00 AM

Continuous Trading for SPOS Scrips: 10:00 AM - 12:00 PM

Periodic Call Auction: 09:30 AM - 11:30 AM (2 sessions of 1 hour each)

Auction for Settlement Details:

  • Offer Entry and Matching: 10:00 AM - 10:45 AM

Afternoon Block Deal Window: 10:50 AM - 11:05 AM

Closing Session: 12:00 PM - 12:10 PM

Post-Closing: 12:10 PM - 12:20 PM

Trade Modification:

  • T+1: Until 12:30 PM
  • T+0: 11:45 AM onwards

Testing Capabilities

Trading members can test the following functionalities during the mock session:

  • Various types of call auction sessions
  • Risk-reduction mode operations
  • Trading halt scenarios
  • Block deal executions
  • Exceptional market conditions
  • IPO and re-listed scrip trading
  • SPOS (Special Pre-Open Session) scrip trading
  • Trade modification procedures

Compliance Requirements

  • All trading members are encouraged to actively participate in the mock trading session
  • Members must provide feedback by 2:00 PM on October 11th, 2025
  • Third-party trading platform vendors and in-house system developers should utilize this opportunity for comprehensive testing

Important Dates

  • Mock Trading Date: Saturday, October 11th, 2025
  • Trading Hours: 08:15 AM - 12:30 PM
  • Feedback Deadline: 2:00 PM on October 11th, 2025

Contact Information

For queries or clarifications:

BSE Tech Support (for TWS users, third-party vendors, and in-house developers):

BSE Help Desk:

Members can also contact their respective Relationship Managers

Impact Assessment

This is a routine mock trading session with no impact on regular market operations. The session provides an important opportunity for trading members to:

  • Test and validate their trading systems and platforms
  • Ensure readiness for various market scenarios
  • Identify and resolve potential technical issues in a controlled environment
  • Improve overall system robustness and efficiency

The mock session occurs on a non-trading day (Saturday) and does not affect regular market activities or create any compliance obligations beyond voluntary participation and feedback submission.

Impact Justification

Routine mock trading session for system testing purposes with no impact on regular market operations or trading requirements