Mock Trading on Saturday, July 18, 2026, for Equity Derivatives segment
BSE notice 20260716-4 · 16 Jul 2026
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BSE has scheduled a mock trading session for the Equity Derivatives segment on July 18, 2026, to facilitate testing of the Closing Auction Session (CAS) and standard trading functionalities. The event is divided into two sessions: Session 1 focuses on testing CAS-related changes, while Session 2 tests standard trading functionalities to ensure readiness for live operations on July 20, 2026. Trading members are required to use the new BOLT Pro TWS version 13.25 and are encouraged to test third-party applications. Participation is for testing purposes only; trades will not incur margin or settlement obligations. Members are requested to provide feedback by 1:00 pm on the day of the session.
What you must do
- Participate in mock trading sessions to test trading applications and CAS functionality.
- Submit feedback regarding the mock trading session by 1:00 pm.
Key dates
Document text
NOTICE
| Notice No. | 20260716-4 |
| Notice Date | 16 Jul 2026 |
| Category | Trading |
| Segment | Derivatives |
| Department | Trading Operations |
| Subject | Mock Trading on Saturday, July 18, 2026, for Equity Derivatives segment |
| Attachments | No Attachment |
Exchange has scheduled a mock trading session (from PR site) in Equity Derivatives segment on July 18th, 2026. As per circular no. 20260319-21 & 20260610-41 issued regarding introduction of Closing Auction Session (CAS) & Standard Operating Procedures, mock trading session has been scheduled on July 18th, 2026 as follows –
- Mock trading session 1 - To facilitate testing of changes related to Closing Auction Session (CAS).
- Mock trading session 2 - To test trading functionalities without CAS changes, to facilitate live trading from Monday July 20, 2026.
A. Mock Trading (Session 1)
| TRADING SESSIONS | FROM | TO |
|---|---|---|
| Log-in | 08:30 am | 09:00 am |
| Pre-Open Session | ||
| Order Entry period | 09:00 am | 09:07/08 am^ |
| Order Matching & Buffer period | 09:08 am | 09:15 am |
| Continuous Trading | 09:15 am | 12:25 pm |
| Update of Stock future price bands for alignment with CAS in Equity Segment | 10:40 am* |
^Random stoppage in last 1 minute of order entry session
- Price band shall be applied to the contracts sequentially starting from 10:40 AM
B. Mock Trading (Session 2)
| TRADING SESSIONS | FROM | TO |
|---|---|---|
| Log-in | 02:45 pm | 03:00 pm |
| Pre-Open Session | ||
| Order Entry period | 03:00 pm | 03:38/39 pm^ |
| Order Matching & Buffer period | 03:39 pm | 03:45 pm |
| Continuous Trading | 03:45 pm | 05:30 pm |
^ - Random stoppage in last 1 minute of order entry session
C. Trading members are requested to note following Important points –
- New BOLT Pro TWS version 13.25 shall be released. Details for same shall be published via separate circular
- Trades of Trading session 1 shall not be available in Trading session 2
Trading members using third party trading application are requested to take note and use this opportunity to test their respective trading application for CAS functionality during mock trading session.
Market participants are requested to note that the mock trading session is merely for the purpose of testing and familiarization and that the trades resulting from such mock trading will not attract any margin obligation or pay-in and pay-out obligation and will not create any rights and liabilities. Participants are requested to participate actively in the mock trading sessions.
Feedback of Mock Trading Session
To be able to provide our members with a robust & efficient system for trading with better features, feedback from all members is very important. We solicit your active support and participation in this endeavor. We request all members to give their feedback for the mock trading session on the contact numbers/ email id provided below by 1:00 pm.
In case of any queries or clarifications, trading members may kindly get in touch with their respective Relationship Manager or contact either the BSE Helpdesk or the BSE Tech Support team teams for any clarification/ queries on this circular –
| TWS users (third party empaneled vendors & in-house system developers) | |
|---|---|
| BSE Tech Support | 022-22728053; bse.tech@bseindia.com |
| Help Desk | 022-45720400/600 & 022-69158500; bsehelp@bseindia.com |
For and on behalf of BSE Ltd.,
Ketan Jantre Head - Trading Operations
Sandeep Pujari DVP – Trading Operations
Source details
- Source
- BSE Ltd (Bombay Stock Exchange)
- Type
- notice
- Published by source
- 16 Jul 2026
- Document number
- 20260716-4
- Issuing division
- Trading Operations
- Coverage area
- securities