Description

BSE has scheduled a mock trading session for the Equity segment on Saturday, April 18, 2026, covering both Primary Site (PR) and Disaster Recovery Site (DR) with a new BOLT Pro TWS version 12.60 release.

Summary

BSE has scheduled a mock trading session for the Equity segment on Saturday, April 18, 2026, operating from both the Primary Site (PR) and Disaster Recovery Site (DR). The session provides trading members and third-party platform users an opportunity to test trading applications across various functionalities. A new BOLT Pro TWS version 12.60 will also be released, with details to follow via a separate circular.

Key Points

  • Mock trading session for Equity segment on April 18, 2026 (Saturday)
  • Sessions run from both Primary Site (PR) and Disaster Recovery Site (DR)
  • Third-party trading platform users may also participate to test their applications
  • Functionalities covered include: call auction sessions, risk-reduction mode, trading halt, block deals, etc.
  • New BOLT Pro TWS version 12.60 to be released; details via separate circular
  • Trades from mock session carry no margin, pay-in/pay-out obligations, or legal rights/liabilities
  • Members requested to submit feedback by 3:00 pm on the day

Regulatory Changes

No regulatory changes. This is a scheduled operational/testing event.

Compliance Requirements

  • Trading members are requested to actively participate in the mock trading session
  • Members must submit feedback on the session by 3:00 pm on April 18, 2026, via provided contact numbers or email
  • Queries should be directed to respective Relationship Managers

Important Dates

  • April 18, 2026 (Saturday): Mock trading session for Equity segment
    • Log-in: 08:15 am – 08:45 am
    • Morning Block Deal Window (PR): 08:45 am – 09:00 am
    • Pre-Open Order Entry (PR): 09:00 am – 09:08 am^
    • Pre-Open Matching (PR): 09:08 am – 09:15 am
    • Continuous Trading T+1 (PR): 09:15 am – 11:00 am
    • Continuous Trading T+0 (PR): 09:15 am – 10:45 am
    • Auction for Settlement Details – Offer Entry & Matching (PR): 09:40 am – 10:40 am
    • Switch Over to DR: 11:00 am / 10:45 am
    • Pre-Open Order Entry (DR): 11:45 am – 11:53 am^
    • Pre-Open Matching (DR): 11:53 am – 12:00 pm
    • Continuous Trading T+1 (DR): 12:00 pm – 01:45 pm
    • Continuous Trading T+0 (DR): 12:00 pm – 01:30 pm
    • Afternoon Block Deal Window: 01:00 pm – 01:15 pm
    • Auction for Settlement Details – Offer Entry & Matching (DR): 01:00 pm – 01:30 pm
    • Closing: 01:45 pm – 01:55 pm
    • Post-Closing: 01:55 pm – 02:05 pm
    • Trade Modification T+1: up to 02:15 pm
    • Trade Modification T+0: up to 01:45 pm
  • Feedback deadline: 3:00 pm, April 18, 2026

^ Random stoppage of order entry in last 1 minute for Pre-Open & Periodic Call Auction; last 10 minutes for Special Pre-Open for IPO & Re-listed scrips.

Impact Assessment

This is a routine mock trading exercise with no financial or legal impact on participants. Trades executed during the session do not create margin obligations, pay-in/pay-out obligations, or any rights and liabilities. The session is relevant for trading members who wish to test system readiness, especially with the upcoming BOLT Pro TWS 12.60 release. DR site switchover testing adds operational resilience value for members managing contingency workflows.

Impact Justification

Routine mock trading session for system testing and familiarization; no real trades, margins, or obligations arise. Relevant only to trading members using BSE's Equity segment.