Description
BSE has scheduled a mock trading session for the Equity segment on Saturday, February 21, 2026, allowing trading members to test platforms and 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. Trading members using third-party trading platforms are encouraged to use this session to test their trading applications across various functionalities including exceptional market conditions. 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
- Third-party trading platform users can test application functionalities during the session
- Functionalities covered include: call auction sessions, risk-reduction mode, trading halt, block deals
- No new BOLT TWS Release will accompany this session
- Members are requested to submit feedback by 3:00 PM on the day of the mock session
Trading Session Schedule
| 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 last 1 minute for Pre-Open & Periodic Call Auction; last 10 minutes for Special Pre-Open for IPO & Re-listed scrips.
Regulatory Changes
No regulatory changes. This is a scheduled operational drill for system readiness testing.
Compliance Requirements
- Trading members are encouraged to participate in the mock session to test their systems
- Members must submit feedback by 3:00 PM on February 21, 2026
- Contact channels for feedback and queries:
- TWS users (third-party vendors & in-house developers): BSE Tech Support – 022-22728053; bse.tech@bseindia.com
- Help Desk: 022-45720400/600 & 022-69158500; bsehelp@bseindia.com
- Members may also contact their respective Relationship Manager
Important Dates
- February 21, 2026 (Saturday): Mock trading session for Equity segment
- 3:00 PM, February 21, 2026: Deadline for submitting member feedback
Impact Assessment
This circular has no market or financial impact as it pertains solely to a mock (simulated) trading session. The session is intended to ensure trading member systems are operationally ready and tested for scenarios such as auction mechanisms, risk-reduction mode, and block deal windows. Participation is voluntary but strongly encouraged to maintain system reliability and readiness.
Impact Justification
Routine mock trading session for system testing purposes only; no real trades executed and no regulatory or compliance changes involved.