Description

BSE has scheduled a mock trading session for the Equity segment on Saturday, April 11, 2026. Trading members are requested to participate to test trading applications and fulfill regulatory requirements.

Summary

BSE has scheduled a mock trading session for the Equity segment on Saturday, April 11, 2026. The session allows trading members and third-party platform users to test their trading applications under simulated market conditions, including exceptional scenarios. Members may use this session or the UAT environment to fulfill regulatory requirements under SEBI circular SEBI/HO/MRD1/DSAP/CIR/P/2020/234 dated November 24, 2020.

Key Points

  • Mock trading session scheduled for Saturday, April 11, 2026 for the Equity segment
  • No new BOLT TWS release will be issued for this session
  • Members can test various functionalities including call auction sessions, risk-reduction mode, trading halt, block deals, etc.
  • Session qualifies as fulfillment of regulatory testing requirements per SEBI circular dated November 24, 2020
  • Feedback must be submitted by 4:30 pm on the day of the session
  • Third-party trading platform users are also encouraged to participate

Regulatory Changes

No new regulatory changes introduced. This circular references the existing SEBI circular SEBI/HO/MRD1/DSAP/CIR/P/2020/234 (dated November 24, 2020) and BSE Notice No. 20201201-22 (dated December 1, 2020) regarding testing of software used in or related to Trading and Risk Management.

Compliance Requirements

  • Trading members must participate in either the Mock Trading Session or the UAT environment to fulfill regulatory software-testing requirements
  • Members using third-party trading platforms should use this session to validate their application functionality
  • All members are requested to submit feedback by 4:30 pm on April 11, 2026
  • For queries, members should contact their Relationship Manager, BSE Helpdesk, or BSE Tech Support (TWS users: 022-2272805)

Important Dates

  • April 11, 2026 (Saturday): Mock trading session day
  • 10:15 am – 10:45 am: Log-in window
  • 10:45 am – 11:00 am: Morning Block Deal Window
  • 11:00 am – 11:08 am: Pre-Open Order Entry period (random stoppage in last 1 minute)
  • 11:08 am – 11:15 am: Pre-Open Matching period
  • 11:15 am – 03:30 pm: Continuous Trading T+1
  • 11:15 am – 01:30 pm: Continuous Trading T+0
  • 11:00 am – 11:45 am: Special Pre-Open Order Entry for IPO & Re-listed scrips (random stoppage in last 10 minutes)
  • 11:45 am – 12:00 pm: Special Pre-Open Matching period
  • 11:30 am – 03:30 pm: Periodic Call Auction (4 sessions of 1 hour each)
  • 12:00 pm – 12:45 pm: Auction for Settlement — Offer Entry and Matching period
  • 01:30 pm – 01:45 pm: Afternoon Block Deal Window
  • 03:30 pm – 03:40 pm: Closing session
  • 03:40 pm – 03:50 pm: Post-closing session
  • By 04:00 pm: Trade Modification T+1 deadline
  • By 01:45 pm: Trade Modification T+0 deadline
  • By 04:30 pm: Feedback submission deadline

Impact Assessment

This is a routine operational notice with minimal market impact. It affects only trading members and technology vendors who need to test their systems. There is no impact on regular market operations, listed securities, or investors. Participation is voluntary (members may choose Mock Trading or UAT environment). The session is conducted outside regular market hours (Saturday) to avoid disruption to normal trading activity.

Impact Justification

Routine mock trading session for system testing purposes; no regulatory changes or market-wide impact. Participation is optional and primarily relevant to trading members for software testing compliance.