Description
BSE announces compulsory release of BOLT Pro TWS ver. 13.00 effective May 11, 2026, covering Equity, Equity Derivatives, Currency Derivatives, Commodity Derivatives & EGR segments, with enhancement in display of Indicative Close Value of Index.
Summary
BSE has announced the release of BOLT Pro TWS Version 13.00, which is a compulsory upgrade for all trading members effective Monday, May 11, 2026. The upgrade applies to Equity, Equity Derivatives, Currency Derivatives, Commodity Derivatives, and EGR segments. The new version introduces an enhancement in the display of the Indicative Close Value of Index.
Key Points
- BOLT Pro TWS ver. 13.00 goes live on Monday, May 11, 2026
- This is a compulsory version release — all trading members must upgrade
- Applicable segments: Equity, Equity Derivatives, Currency Derivatives, Commodity Derivatives, and EGR
- New feature: Enhancement in Display of Indicative Close Value of Index
- Version available for download from May 8, 2026 at 7:00 PM onwards
- Mock trading session available on Saturday, May 9, 2026
- Leased Line users can upgrade via the TWS Version tab in the Auto-Download Interface
Regulatory Changes
No regulatory rule changes; this is a technical/software upgrade mandated by BSE for all trading members using BOLT Pro TWS across the specified segments.
Compliance Requirements
- All trading members using BOLT Pro TWS must upgrade to ver. 13.00 before May 11, 2026
- Leased Line users: Select ver. 13.00 in the TWS Version tab of the Auto-Download Interface on startup
- Website download steps:
- Browse to http://www.bseindia.com/help/
- Click on the “Update.zip” link
- Download and unzip ‘Software Update.zip’
- Follow instructions in ‘How to use this files.doc’ to copy files to the BOLT Pro TWS installation directory
- For queries, contact BSE Helpdesk: 022-45720400/600 & 022-69158500 or bsehelp@bseindia.com
Important Dates
| Date | Event |
|---|---|
| May 8, 2026 (7:00 PM onwards) | BOLT Pro TWS ver. 13.00 available for download |
| May 9, 2026 | Mock trading session to test new version |
| May 11, 2026 | Compulsory go-live date for BOLT Pro TWS ver. 13.00 |
Impact Assessment
This is a high-impact operational notice for all BSE trading members. Since the upgrade is compulsory, failure to upgrade before May 11, 2026 may result in inability to trade on BSE platforms across the five affected segments. The functional enhancement — improved display of Indicative Close Value of Index — is relatively minor but the mandatory nature of the upgrade makes timely action critical for uninterrupted trading operations.
Impact Justification
Compulsory version upgrade affecting all trading members across five market segments (Equity, Equity Derivatives, Currency Derivatives, Commodity Derivatives, EGR) with a hard go-live date of May 11, 2026. Non-compliance may prevent trading access.