Description

BSE announces mock trading session scheduled for Equity segment on Saturday, October 25th, 2025 to test trading platforms and 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 25th, 2025. This session is designed for trading members to test their trading platforms and applications, including third-party systems, across various functionalities such as call auction sessions, risk-reduction mode, trading halts, and block deals. No new BOLT TWS release is scheduled. Members are requested to provide feedback by 6:00 PM on the mock trading day.

Key Points

  • Mock trading session scheduled for Saturday, October 25th, 2025
  • No new BOLT TWS release for this session
  • Testing opportunity for third-party trading platforms and in-house systems
  • Covers exceptional market conditions including call auctions, risk-reduction mode, trading halts, and block deals
  • Login begins at 1:15 PM, trading sessions run until 5:20 PM
  • Feedback required from all members by 6:00 PM on the mock trading day

Regulatory Changes

No regulatory changes. This is a routine mock trading session for testing purposes.

Compliance Requirements

  • Trading members are encouraged to participate in the mock trading session
  • Members must provide feedback by 6:00 PM on October 25th, 2025
  • Contact BSE Helpdesk (022-45720400/600 & 022-69158500; bsehelp@bseindia.com) or BSE Tech Support (022-22728053; bse.tech@bseindia.com) for queries

Important Dates

  • October 25th, 2025: Mock trading session
    • Login: 1:15 PM - 1:45 PM
    • Morning Block Deal Window: 1:45 PM - 2:00 PM
    • Pre-Open Order Entry: 2:00 PM - 2:08 PM
    • Pre-Open Matching: 2:08 PM - 2:15 PM
    • Continuous Trading T+1: 2:15 PM - 5:00 PM
    • Continuous Trading T+0: 2:15 PM - 4:30 PM
    • Special Pre-Open for IPO & Re-listed scrips (Order Entry): 2:00 PM - 2:30 PM
    • Special Pre-Open for IPO & Re-listed scrips (Matching): 2:30 PM - 2:45 PM
    • Continuous Trading for SPOS Scrips: 2:45 PM - 5:00 PM
    • Periodic Call Auction (2 sessions of 1 hour): 2:30 PM - 4:30 PM
    • Auction for Settlement Details: 3:00 PM - 3:45 PM
    • Afternoon Block Deal Window: 4:00 PM - 4:15 PM
    • Closing: 5:00 PM - 5:10 PM
    • Post-closing: 5:10 PM - 5:20 PM
    • Trade Modification T+1: Until 5:30 PM
    • Trade Modification T+0: Until 4:45 PM
  • Feedback Deadline: 6:00 PM on October 25th, 2025

Impact Assessment

Market Impact: None. This is a mock trading session with no real market transactions.

Operational Impact: Low. Provides trading members an opportunity to test and validate their trading systems, identify potential issues, and ensure readiness for actual trading. Particularly useful for members using third-party platforms or developing in-house systems to test various market scenarios and exceptional conditions in a controlled environment.

Impact Justification

Routine mock trading session for testing purposes with no impact on actual trading or regulatory requirements. No changes to trading rules or member obligations.