Release of new version of Market Data API in Equity Derivatives segment - Update

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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 Tejash Somaiya Vice President Vice President I.T. Development Trading Development June 18, 2026