Description

BSE has scheduled a mock trading session for the Equity segment on Saturday, October 25, 2025, to allow trading members to test their platforms and applications across various functionalities including call auctions, risk-reduction mode, and block deals.

Summary

BSE has scheduled a mock trading session for the Equity segment on Saturday, October 25, 2025. This testing session allows trading members using third-party platforms and in-house systems to test various trading functionalities including call auctions, risk-reduction mode, trading halts, and block deals. No new BOLT TWS release is planned for this session.

Key Points

  • Mock trading session scheduled for Saturday, October 25, 2025
  • Available for all trading members including those using third-party trading platforms
  • No new BOLT TWS release will be implemented
  • Opportunity to test exceptional market conditions and various trading functionalities
  • Feedback required from all members by 6:00 PM on the same day
  • Multiple trading sessions included: T+1, T+0, Block Deals, Pre-Open, Periodic Call Auction, and Post-Closing

Mock Trading Schedule

Login: 1:15 PM - 1:45 PM

Morning Block Deal Window: 1:45 PM - 2:00 PM

Pre-Open Session:

  • Order Entry: 2:00 PM - 2:08 PM (random stoppage in last 1 minute)
  • Matching Period: 2:08 PM - 2:15 PM

Continuous Trading:

  • T+1: 2:15 PM - 5:00 PM
  • T+0: 2:15 PM - 4:30 PM

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

  • Order Entry: 2:00 PM - 2:30 PM (random stoppage in last 10 minutes)
  • Matching Period: 2:30 PM - 2:45 PM

Continuous Trading for SPOS Scrips: 2:45 PM - 5:00 PM

Periodic Call Auction: 2:30 PM - 4:30 PM (2 sessions of 1 hour each)

Auction for Settlement Details: 3:00 PM - 3:45 PM (Offer Entry and Matching)

Afternoon Block Deal Window: 4:00 PM - 4:15 PM

Closing Session: 5:00 PM - 5:10 PM

Post-Closing: 5:10 PM - 5:20 PM

Trade Modification:

  • T+0: Until 4:45 PM
  • T+1: Until 5:30 PM

Testing Capabilities

Members can test the following functionalities during the mock session:

  • Various types of call auction sessions
  • Risk-reduction mode
  • Trading halt scenarios
  • Block deal execution
  • Pre-open mechanisms
  • Periodic call auctions
  • IPO and re-listed scrip trading
  • SPOS (Special Pre-Open Session) scrips
  • Trade modification procedures

Compliance Requirements

  • Trading members are encouraged to actively participate in the mock session
  • Feedback must be submitted by 6:00 PM on October 25, 2025
  • Members should test their respective trading applications thoroughly
  • Contact BSE Helpdesk or Tech Support for any queries or clarifications

Important Dates

  • Mock Trading Date: Saturday, October 25, 2025
  • Feedback Deadline: 6:00 PM on October 25, 2025

Contact Information

For TWS Users (third-party vendors & in-house developers):

Help Desk:

Relationship Manager: Contact respective Relationship Manager for queries

Impact Assessment

This is a routine testing session with no impact on live market operations. The mock trading provides an opportunity for members to ensure their systems are functioning correctly and to identify any technical issues before they affect actual trading. There is no financial impact or regulatory compliance burden associated with this session, though participation is encouraged to maintain operational readiness.

Impact Justification

Routine mock trading session for testing purposes with no impact on live markets or regulatory requirements