Discontinuation of Existing Broadcast Parameters in F&O Segment · NSE/MSD/76056
NSE circular NSE/MSD/76056 · 31 Aug 2026
Official title
Market Data - Discontinuation of Existing Broadcast Parameters in Futures & Options Segment - Reminder
Official record
Open source pageSummary
Check the official recordWhat changed
The National Stock Exchange discontinues existing market data broadcast parameters for NNF users in the Futures and Options segment. This change supports the update of the token-level cumulative volume data type from 4 bytes to 8 bytes. Members must complete their migration to the new broadcast parameters or finalize their migration plans before the discontinuation date. The Exchange stops the existing broadcast parameters for NNF users with 5 depth and 1 second refresh starting from the mock session on September 05, 2026. Members must review their broadcast configurations to ensure they receive market data without interruption.
What you must do
- Complete migration to new market data broadcast parameters or ensure readiness of migration plan
- Review market data broadcast configurations
Key dates
Document text
National Stock Exchange of India Limited
Circular
Department: MEMBER SERVICE DEPARTMENT
| Download Ref No: NSE/MSD/76056 | Date: August 31, 2026 |
|---|---|
| Circular Ref. No: 60/2026 |
All Members,
Market Data - Discontinuation of Existing Broadcast Parameters in Futures & Options Segment - Reminder
This is in continuation of Exchange circulars NSE/MSD/74133 dated May 08, 2026, NSE/MSD/74448 dated May 27, 2026, NSE/MSD/75324 dated July 21, 2026 and NSE/MSD/75944 dated August 25, 2026 regarding the introduction of new broadcast parameters for market data in the Futures & Options (F&O) segment.
As communicated earlier, the Exchange has introduced new broadcast parameters to accommodate the change in the data type for token-level cumulative volume (total traded volume) from "Unsigned Integer" (4 bytes) to "LONG" (8 bytes). A coexistence period was provided to enable members to receive market data through both the existing and new broadcast parameters and undertake the necessary migration.
In this regard, members using NNF are reminded to complete their migration to the new market data broadcast parameters, or ensure readiness of their migration plan, prior to the discontinuation of the existing parameters.
| Functionality | Discontinuation date |
|---|---|
| Discontinuation of existing market data broadcast parameters for NNF users | |
| (5 depth 1 second refresh) | **September 05, 2026 |
| (mock) onwards** |
Members are requested to review their respective market data broadcast configurations and ensure that the required changes are completed within the stipulated timeline to ensure uninterrupted receipt of the F&O market data broadcast.
Please note all other details as mentioned in the above circulars shall remain unchanged.
For and on behalf of
National Stock Exchange of India Limited
Khushal Shah
Associate Vice President
| Toll Free No | Email id |
|---|---|
| 1800-266-0050 (Option 1) | msm@nse.co.in |
Source details
- Source
- National Stock Exchange of India
- Type
- circular
- Published by source
- 31 Aug 2026
- Document number
- NSE/MSD/76056
- Issuing division
- MEMBER SERVICE DEPARTMENT
- Coverage area
- securities