Release of new version of Market Data API in Equity Derivatives segment
BSE notice 20260618-40 · 18 Jun 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 updates the Market Data API structure for the Equity Derivatives segment. This change supports Closing Auction Session requirements. The update affects NFCAST API and MDI/EMDI API. Trading members and front-end application vendors must test their systems in the test environment before the live implementation. The exchange schedules mock trading sessions before each go-live date. NFCAST API version 6.2 goes live on September 07, 2026. MDI/EMDI API version 1.4.5 goes live on August 10, 2026. EOBI remains unchanged.
What you must do
- Complete testing in the test environment
Key dates
- Test environment availability for NFCAST and MDI/EMDI APIs
- 14 Jul 2026
- Mock trading for MDI/EMDI API
- 08 Aug 2026
Document text
NOTICE
| Notice No. | 20260618-40 |
|---|---|
| Notice Date | 18 Jun 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 |
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 dated June 10, 2026 regarding release of the new version of Market Data APIs to facilitate Closing Auction Session related changes in Equity segment.
It is now proposed to implement these Market Data Streams API structure changes in live environment in Equity Derivatives segment as well.
Kindly refer below table for rolling out changes in the test environment and in the live environment-
| Market Data Streams | Current Version | New Version | New version Test Environment Availability date | New Version Go live date |
|---|---|---|---|---|
| NFCAST API | Version 5.0 | Version 6.2 | July 14, 2026 | September 07,2026 (Mock Trading on September 05,2026) |
| MDI / EMDI API | Version 1.4.4 | Version 1.4.5 | July 14, 2026 | August 10,2026 (Mock Trading on August 08,2026) |
| EOBI | Version 1.4 | No change | No change | No change |
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 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 18, 2026
Source details
- Source
- BSE Ltd (Bombay Stock Exchange)
- Type
- notice
- Published by source
- 18 Jun 2026
- Document number
- 20260618-40
- Issuing division
- Trading Development
- Coverage area
- securities