Description
BSE has scheduled a mock trading session for the Equity segment on Saturday, February 21, 2026, allowing trading members to test their platforms and applications across various functionalities including call auction sessions, risk-reduction mode, and block deals.
Summary
BSE has scheduled a mock trading session for the Equity segment on Saturday, February 21, 2026. The session is intended for trading members — including those using third-party trading platforms — to test their systems across various functionalities such as call auction sessions, risk-reduction mode, trading halts, and block deals. There will be no new BOLT TWS release associated with this session.
Key Points
- Mock trading session scheduled for Saturday, February 21, 2026 for the Equity segment
- Open to trading members using third-party and in-house trading platforms
- No new BOLT TWS release for this session
- Covers testing of exceptional market conditions, various call auction types, risk-reduction mode, trading halts, and block deals
- Members requested to submit feedback by 3:00 PM on the day of the session
Regulatory Changes
No regulatory changes. This is an operational/infrastructure notice for a scheduled mock trading session.
Compliance Requirements
- Trading members are encouraged (not mandated) to participate and test their trading applications
- Members must submit feedback on the mock trading session by 3:00 PM to BSE’s designated contacts
- For queries: contact the respective Relationship Manager, BSE Helpdesk, or BSE Tech Support
Important Dates
- Mock Trading Date: Saturday, February 21, 2026
- Feedback Deadline: 3:00 PM on February 21, 2026
Trading Session Schedule (February 21, 2026)
| Session | From | To |
|---|---|---|
| Log-in | 10:15 AM | 10:45 AM |
| Morning Block Deal Window | 10:45 AM | 11:00 AM |
| Pre-Open – Order Entry | 11:00 AM | 11:08 AM^ |
| Pre-Open – Matching | 11:08 AM | 11:15 AM |
| Continuous Trading T+1 | 11:15 AM | 02:00 PM |
| Continuous Trading T+0 | 11:15 AM | 01:30 PM |
| Special Pre-Open (IPO & Re-listed) – Order Entry | 11:00 AM | 11:45 AM^ |
| Special Pre-Open (IPO & Re-listed) – Matching | 11:45 AM | 12:00 PM |
| Continuous Trading for SPOS Scrips | 12:00 PM | 02:00 PM |
| Periodic Call Auction (2 sessions of 1 hour) | 11:30 AM | 01:30 PM |
| Auction – Offer Entry and Matching | 12:00 PM | 12:45 PM |
| Afternoon Block Deal Window | 12:50 PM | 01:05 PM |
| Closing | 02:00 PM | 02:10 PM |
| Post-Closing | 02:10 PM | 02:20 PM |
| Trade Modification T+1 | – | 02:30 PM |
| Trade Modification T+0 | 01:45 PM | – |
^ Random stoppage of order entry in the last 1 minute for Pre-Open and Periodic Call Auction; last 10 minutes for Special Pre-Open for IPO & Re-listed scrips.
Contact Information
- BSE Tech Support (TWS/third-party vendors): 022-22728053 | bse.tech@bseindia.com
- BSE Help Desk: 022-45720400/600 & 022-69158500 | bsehelp@bseindia.com
Impact Assessment
This circular has minimal market impact as it pertains solely to a mock/test trading session on a non-trading Saturday. It is operationally relevant only to trading members who wish to validate their platform integrations. No real trades will be executed and no changes to live trading rules or market structure are introduced.
Impact Justification
Routine mock trading session for system testing purposes only; no real trades or market impact. Relevant primarily to trading members using third-party or in-house platforms.