Description

BSE has scheduled a mock trading session for the Equity segment on Saturday, October 11th, 2025, allowing trading members to test their platforms and various market 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 11th, 2025. The session will allow trading members using third-party trading platforms to test their trading applications and various market functionalities. No new BOLT TWS release will be deployed. The mock session will simulate various market conditions including call auctions, risk-reduction mode, trading halts, and block deals.

Key Points

  • Mock trading session scheduled for Saturday, October 11th, 2025
  • Available for all trading members including those using third-party platforms
  • No new BOLT TWS release will be implemented
  • Session will include testing of exceptional market conditions
  • Functionalities to be tested include call auction sessions, risk-reduction mode, trading halt, and block deals
  • Feedback required from all members by 2:00 PM on the session day
  • Both T+0 and T+1 trading segments will be available

Regulatory Changes

No regulatory changes. This is a routine operational mock trading session.

Compliance Requirements

  • Trading members are encouraged to participate in the mock session
  • Members must provide feedback by 2:00 PM on October 11th, 2025
  • Contact BSE Helpdesk (022-45720400/600 & 022-69158500; bsehelp@bseindia.com) or BSE Tech Support (022-22728053; bse.tech@bseindia.com) for queries
  • Members can also reach out to their respective Relationship Managers

Important Dates

  • October 11th, 2025: Mock trading session date
  • Login: 08:15 AM - 08:45 AM
  • Morning Block Deal Window: 08:45 AM - 09:00 AM
  • Pre-Open Order Entry: 09:00 AM - 09:08 AM (random stoppage in last 1 minute)
  • Pre-Open Matching: 09:08 AM - 09:15 AM
  • Continuous Trading T+1: 09:15 AM - 12:00 PM
  • Continuous Trading T+0: 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)
  • Special Pre-Open Matching: 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)
  • Auction for Settlement Details: 10:00 AM - 10:45 AM
  • Afternoon Block Deal Window: 10:50 AM - 11:05 AM
  • Closing: 12:00 PM - 12:10 PM
  • Post-Closing: 12:10 PM - 12:20 PM
  • Trade Modification T+1: Until 12:30 PM
  • Trade Modification T+0: 11:45 AM
  • Feedback Deadline: 2:00 PM on October 11th, 2025

Impact Assessment

Market Impact: None. This is a mock trading session with no impact on actual market operations or live trading.

Operational Impact: Low. Trading members have the opportunity to test their systems and identify potential issues in a simulated environment. This is beneficial for ensuring system readiness and reducing operational risks during actual trading. Third-party platform vendors and in-house system developers can validate their applications under various market conditions.

Member Benefits: The session provides a risk-free environment for testing trading platforms, validating connectivity, and ensuring preparedness for exceptional market scenarios. Early identification of technical issues can prevent disruptions during live trading sessions.

Impact Justification

Routine mock trading session for system testing purposes with no impact on actual trading or regulatory requirements. This is an operational exercise for trading members to test their platforms.