Release of New Version of Market Data API in Equity Derivatives Segment · 20260820-14
BSE notice 20260820-14 · 20 Aug 2026
Official title
Release of new version of Market Data API in Equity Derivatives segment - Update
Official record
Open source pageSummary
Check the official recordWhat changed
BSE revises the go-live date for the MDI/EMDI API Version 1.4.5 in the Equity Derivatives segment to August 31, 2026. The exchange schedules mock trading for this version on August 29, 2026. The go-live date for NFCAST Version 6.2 remains September 07, 2026, with mock trading on September 05, 2026. These API versions support pre-open session modifications and the dissemination of closing reference prices for stock futures. Trading members and front-end trading application vendors must complete testing in the test environment to ensure a smooth rollout.
What you must do
- Complete testing in the test environment
Key dates
- Mock trading for MDI/EMDI API Version 1.4.5
- 29 Aug 2026
- Go-live date for MDI/EMDI API Version 1.4.5
- 31 Aug 2026
Document text
[Image omitted. See the official document.]
NOTICE
| Notice No. | 20260820-14 |
|---|---|
| Notice Date | 20 Aug 2026 |
| Category | Trading |
| Segment | Derivatives |
| Department | Trading Development |
| Subject | Release of new version of Market Data API in Equity Derivatives segment - Update |
| Attachments | No Attachment |
[Image omitted. See the official document.]
This is in partial modification to Exchange circular no. 20260805-32 dated August 05, 2026, regarding release of the new version of Market Data APIs in Equity Derivatives segment. This is also further to Exchange circular no. 20260803-36 dated August 03, 2026 regarding Modifications in the Pre-open Session in Equity Derivatives segment.
It is proposed to revise the go-live date for the new MDI/EMDI API (Version 1.4.5) in the Equity Derivatives Segment to August 31, 2026. Please note that there is no change in the go-live date for NFCAST Version 6.2, which shall remain as per the schedule communicated earlier.
| Market Data Streams | Current Version | New Version | Current Go-Live Date | Revised Go-Live Date |
|---|---|---|---|---|
| NFCAST API | Version 5.0 | Version 6.2 | September 07, 2026 | |
| (Mock Trading on September 05,2026) | September 07, 2026 |
No change | | MDI / EMDI API | Version 1.4.4 | Version 1.4.5 | August 24, 2026 (Mock Trading on August 22,2026) | August 31, 2026 (Mock Trading on August 29,2026) | | EOBI | Version 1.4 | No change | No change | No change |
Important Note: Trading members may kindly note that the above-mentioned market data API versions shall facilitate rollout of pre-open session modifications and dissemination of closing reference price for stock futures between 3:15pm – 3:20pm, as informed vide Exchange circular no. 20260803-36 dated August 03, 2026.
Trading members and front-end trading application vendors are requested to complete the necessary testing in their respective applications in the test environment to ensure a smooth rollout.
For any queries about this circular, members may kindly get in touch through the following contact details –
| Queries | Email ID | Telephone No. |
|---|---|---|
| Technical queries | bse.tech@bseindia.com |
bsehelp@bseindia.com | 022-2272 8053 022-45720400/600 and 022-69158500 | | Functional queries | iml.info@bseindia.com | 022-22728705/8885 |
For & on behalf of BSE Ltd,
Nawaid Pathan Vice President I.T. Development
Tejash Somaiya Vice President Trading Development
August 20, 2026
Source details
- Source
- BSE Ltd (Bombay Stock Exchange)
- Type
- notice
- Published by source
- 20 Aug 2026
- Document number
- 20260820-14
- Issuing division
- Trading Development
- Coverage area
- securities