Release of New Version of Market Data API in Equity Segment
BSE notice 20260617-33 · 17 Jun 2026
Official title
Release of new version of Market Data API in Equity Segment - Update
Official record
Open source pageSummary
Check the official recordWhat changed
BSE updates Market Data API versions for the Equity segment to support Closing Auction Session changes. The exchange introduces NFCAST API version 6.2 and MDI/EMDI API version 1.4.5. Trading members and front-end trading application vendors must complete testing in the test environment before the live rollout. The exchange schedules mock trading sessions before each go-live date. MDI/EMDI API version 1.4.5 goes live on July 13, 2026, following a mock session on July 11, 2026. NFCAST API version 6.2 goes live on August 3, 2026, following a mock session on August 1, 2026. EOBI remains at version 1.4 with no changes.
What you must do
- Complete necessary testing in the test environment
Key dates
- Mock trading for MDI / EMDI API
- 11 Jul 2026
- Go-live date for MDI / EMDI API
Document text
NOTICE
| Notice No. | 20260617-33 |
|---|---|
| Notice Date | 17 Jun 2026 |
| Category | Trading |
| Segment | Equity |
| Department | Trading Development |
| Subject | Release of new version of Market Data API in Equity Segment - Update |
| Attachments | No Attachment |
This is in continuation to Exchange circular number 20260330-39 dated March 30, 2026, circular number 20260515-25 dated May 15, 2026 and 20260610-38 regarding release of the new version of ETI API & NFCAST Market Data API for facilitating Closing Auction Session related changes.
Market Data Streams API structure changes published via above mentioned circulars have been made available for testing in test environment from June 11, 2026. It is now proposed to roll out these changes in live environment in phased manner in Equity segment.
Kindly refer below table for rolling out changes in the live environment –
| Market Data Streams | Current Version | New Version | New Version Go live date |
|---|---|---|---|
| NFCAST API | Version 5.0 | Version 6.2 | August 03,2026 (Mock Trading on August 01,2026) |
| MDI / EMDI API | Version 1.4.4 | Version 1.4.5 | July 13,2026 (Mock Trading on July 11,2026) |
| EOBI | Version 1.4 | No change | No change |
Trading members and front-end trading application vendors are requested to complete necessary testing in their respective applications in the test environment to ensure a smooth rollout.
For any queries or clarifications, members may kindly get in touch through the following Contact Details -
Email ID: bse.tech@bseindia.com
Contact No.: 022-2272 8053
For & on behalf of BSE Ltd,
Nawaid Pathan
Vice President
I.T. Development
Tejash Somaiya
Vice President
Trading Development
June 17, 2026
Source details
- Source
- BSE Ltd (Bombay Stock Exchange)
- Type
- notice
- Published by source
- 17 Jun 2026
- Document number
- 20260617-33
- Issuing division
- Trading Development
- Coverage area
- securities