Description

BSE has scheduled a mock trading session for Equity Derivatives segment on Saturday, November 22, 2025, including pre-open session testing for various functionalities and exceptional market conditions.

Summary

BSE has scheduled a mock trading session for the Equity Derivatives segment on Saturday, November 22, 2025. This session will enable trading members using third-party platforms or in-house systems via ETI APIs to test their trading applications for various functionalities including exceptional market conditions, risk-reduction mode, and trading halts. Notably, this mock will include pre-open session testing in Equity Derivatives segment as per the introduction announced in circular 20251110-40 dated November 10, 2025.

Key Points

  • Mock trading session scheduled for Saturday, November 22, 2025 for Equity Derivatives segment
  • No new BOLT TWS Release for this mock session
  • Pre-open session will be included for testing purposes
  • A separate test contract master file will be provided specifically for pre-open session testing
  • Test contract file will be available on Friday, November 21, 2025 at EOD at https://www.bseindia.com/members/index.aspx (filename: Mock_22-11-2025.zip)
  • Members must replace test file with appropriate contract master file for live trading on Monday, November 24, 2025
  • Mock trades will not create any margin obligations, pay-in/pay-out obligations, rights, or liabilities
  • Feedback solicited from all members by 5:00 PM on mock trading day

Regulatory Changes

No regulatory changes. This is a testing session to familiarize members with the upcoming pre-open session feature in Equity Derivatives segment.

Compliance Requirements

  • Trading members using third-party platforms or in-house systems should participate in the mock session to test their applications
  • Members must download and use the test contract master file (Mock_22-11-2025.zip) available from November 21, 2025 EOD
  • After mock session, members must replace test file with live contract master file before trading on Monday, November 24, 2025
  • Members requested to provide feedback by 5:00 PM on mock trading day
  • 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

  • Friday, November 21, 2025: Test contract master file (Mock_22-11-2025.zip) available at EOD on BSE website
  • Saturday, November 22, 2025: Mock trading session
    • Log-in: 11:15 AM - 12:00 PM
    • Pre-Open Order Entry: 12:00 PM - 01:27/28 PM (random stoppage in last 1 minute)
    • Pre-Open Order Matching: 01:28 PM - 01:32 PM
    • Continuous Trading: 01:35 PM - 04:00 PM
    • Trade Modification: Until 04:15 PM
    • Feedback deadline: 5:00 PM
  • Monday, November 24, 2025: Resume live trading with appropriate contract master file

Impact Assessment

Market Impact: None. This is a mock trading session with no real market impact. All trades executed during the session will not create any actual obligations or liabilities.

Operational Impact: Low to Medium for trading members. This provides an important opportunity for members to test their trading systems, particularly for the new pre-open session functionality in Equity Derivatives. Members using third-party platforms or in-house systems should utilize this session to ensure their applications are ready for the pre-open session implementation. The use of a separate test contract master file requires operational attention to ensure proper file management before resuming live trading on Monday.

Impact Justification

Mock trading session is for testing purposes only with no real trading obligations or impact on live markets. No regulatory changes or compliance requirements, purely operational testing opportunity for members.