Discontinuation of Existing Broadcast Parameters in Futures & Options Segment · NSE/MSD/75324
NSE circular NSE/MSD/75324 · 21 Jul 2026
Official title
Market Data - Discontinuation of Existing Broadcast Parameters in Futures & Options Segment
Official record
Open source pageSummary
Check the official recordWhat changed
The National Stock Exchange of India is discontinuing existing market data broadcast parameters in the Futures & Options segment. This follows the introduction of new parameters to support a change in the data type for token-level cumulative volume from a 4-byte Unsigned Integer to an 8-byte LONG. Members using the Non-NEAT Facility (NNF) must migrate to the new broadcast parameters. The exchange has concluded the coexistence phase, and the existing parameters will be discontinued effective September 5, 2026. No further extensions to this timeline will be granted. Members are advised to review the provided annexures for the specific parameters being discontinued and the new parameters required for migration, and to ensure their infrastructure is adequately sized for the updated feeds.
What you must do
- Migrate to new market data broadcast parameters before the deadline.
- Monitor and adequately size infrastructure and systems for market data feeds.
Key dates
Document text
National Stock Exchange of India Limited
Circular
| Department: MEMBER SERVICE DEPARTMENT | |
|---|---|
| Download Ref No: NSE/MSD/75324 | Date: July 21, 2026 |
| Circular Ref. No: 53/2026 |
All Members,
Market Data – Discontinuation of Existing Broadcast Parameters in Futures & Options Segment
This is in reference to Exchange circular NSE/MSD/74133 dated May 08, 2026 and NSE/MSD/74448 dated May 27, 2026 regarding ‘Market data- new broadcast parameters in Futures & Options segment’.
In the aforesaid circular, Exchange introduced new broadcast parameters for market data in F&O segment for implementing changes in data type for token level cumulative volume (total traded volume) from “Unsigned Integer” (4 bytes) to “LONG” (8 bytes). Further, Exchange also informed to provide a coexistence phase for receiving broadcast from both existing and new parameters, after which Exchange would discontinue the existing broadcast parameters.
Accordingly, members using NNF are required to note the following discontinuation date of coexistence period i.e. discontinuation of existing market data broadcast parameters. Thus, kindly migrate to new market data broadcast parameters before the deadline. No further extension shall be provided on the timelines below.
| Functionality | Discontinuation date |
|---|---|
| Discontinuation of existing market data broadcast parameters for NNF users (5 depth 1 second refresh) | September 05, 2026 (mock) onwards |
Please note all other details as mentioned in the above circulars shall remain unchanged.
For ease and convenience, members may refer to below annexures:
| Annexure 1 | Existing broadcast parameters which shall be discontinued |
| Annexure 2 | Applicable market data broadcast parameters |
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 |
Annexure 1
Members are advised to note the below ‘Existing Broadcast Parameters’ which shall be discontinued:
I. Combined broadcast - Price volume (5 depth 1 second refresh), other related data, master updates, market open / close status message broadcast etc.
| Stream | Security / Contracts | Existing Parameter |
|---|---|---|
| Multicast IP | ||
| FO (Source 1) | Active | 239.50.50.21 |
| FO (Source 2) | 239.50.50.26 |
II. Stream wise broadcast - Price volume (5 depth 1 second refresh), other related data, master updates, market open / close status message broadcast etc. on additional streams in FO Segment
| Stream | Stream ID | Security / Contracts * | (Source 1) | (Source 2) | Approx. bandwidth utilization | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | | | | Multicast IP | Port | Multicast IP | Port | | | FO Stream B | 1 | As per master stream file | 239.50.51.51 | 15051 | 239.50.51.151 | 15151 | 0.1 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream C | 2 | As per master stream file | 239.50.51.52 | 15052 | 239.50.51.152 | 15152 | 0.1 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream D | 3 | As per master stream file | 239.50.51.53 | 15053 | 239.50.51.153 | 15153 | 0.6 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | | 4 | | 239.50.51.54 | 15054 | 239.50.51.154 | 15154 | 0.9 Mbps | | FO Stream E | | As per master stream file | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream F | 5 | As per master stream file | 239.50.51.55 | 15055 | 239.50.51.155 | 15155 | 0.4 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream G | 6 | As per master stream file | 239.50.51.56 | 15056 | 239.50.51.156 | 15156 | 0.1 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream H | 7 | As per master stream file | 239.50.51.57 | 15057 | 239.50.51.157 | 15157 | 0.1 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream I | 8 | As per master stream file | 239.50.51.58 | 15058 | 239.50.51.158 | 15158 | 0.1 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream J | 9 | As per master stream file | 239.50.51.59 | 15059 | 239.50.51.159 | 15159 | 0.1 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream K | 10 | As per master stream file | 239.50.51.60 | 15060 | 239.50.51.160 | 15160 | 0.4 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream L | 11 | As per master stream file | 239.50.51.61 | 15061 | 239.50.51.161 | 15161 | 0.1 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream M | 12 | As per master stream file | 239.50.51.62 | 15062 | 239.50.51.162 | 15162 | 0.1 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream N | 13 | As per master stream file | 239.50.51.63 | 15063 | 239.50.51.163 | 15163 | 3 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream O | 14 | As per master stream file | 239.50.51.64 | 15064 | 239.50.51.164 | 15164 | 3 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream P | 15 | As per master stream file | 239.50.51.65 | 15065 | 239.50.51.165 | 15165 | 3 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream Q | 16 | As per master stream file | 239.50.51.66 | 15066 | 239.50.51.166 | 15166 | 3 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | | 17 | | 239.50.51.67 | 15067 | 239.50.51.167 | 15167 | 3 Mbps | | FO Stream R | | As per master stream file | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | | | FO Stream S | 18 | As per master stream file | 239.50.51.68 | 15068 | 239.50.51.168 | 15168 | 3 Mbps | | | | | 239.50.51.50 | 15050 | 239.50.51.50 | 15050 | |
Annexure 2
Members are advised to mandatorily migrate to below parameters on priority or shall ensure readiness of their migration plan before the discontinuation date of existing broadcast parameters:
A. Combined broadcast - Price volume (5 depth 1 second refresh), other related data, master updates, market open / close status message broadcast etc.
| Stream | Security / Contracts | New Parameter for receiving market data through Existing transcodes (except 17201, 11833, 7208 & 7211) and New transcodes (7201, 1833, 17208 & 17211) |
|---|---|---|
| Multicast IP | ||
| FO (Source 1) | Active | 239.50.50.22 |
| FO (Source 2) | 239.50.50.27 |
B. Stream wise broadcast - Price volume (5 depth 1 second refresh), other related data, master updates, market open / close status message broadcast etc. on additional streams in FO Segment
Members using stream broadcast are required to change to the updated parameters to receive the Existing transcodes (except 17201, 11833, 7208 & 7211) and new transcodes (i.e. 7201, 1833, 17208 & 17211) as per table below:
| Stream | Stream ID | Security / Contracts * | (Source 1) | (Source 2) | Approx. bandwidth utilization | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | | | | Multicast IP | Port | Multicast IP | Port | | | FO Stream B | 1 | As per master stream file | 239.50.51.21 | 15021 | 239.50.51.121 | 15121 | 0.115 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream C | 2 | As per master stream file | 239.50.51.22 | 15022 | 239.50.51.122 | 15122 | 0.115 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream D | 3 | As per master stream file | 239.50.51.23 | 15023 | 239.50.51.123 | 15123 | 0.69 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream E | 4 | As per master stream file | 239.50.51.24 | 15024 | 239.50.51.124 | 15124 | 1.035 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream F | 5 | As per master stream file | 239.50.51.25 | 15025 | 239.50.51.125 | 15125 | 0.46 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream G | 6 | As per master stream file | 239.50.51.26 | 15026 | 239.50.51.126 | 15126 | 0.115 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream H | 7 | As per master stream file | 239.50.51.27 | 15027 | 239.50.51.127 | 15127 | 0.115 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream I | 8 | As per master stream file | 239.50.51.28 | 15028 | 239.50.51.128 | 15128 | 0.115 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream J | 9 | As per master stream file | 239.50.51.29 | 15029 | 239.50.51.129 | 15129 | 0.115 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream K | 10 | As per master stream file | 239.50.51.30 | 15030 | 239.50.51.130 | 15130 | 0.46 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream L | 11 | As per master stream file | 239.50.51.31 | 15031 | 239.50.51.131 | 15131 | 0.115 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream M | 12 | As per master stream file | 239.50.51.32 | 15032 | 239.50.51.132 | 15132 | 0.115 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream N | 13 | As per master stream file | 239.50.51.33 | 15033 | 239.50.51.133 | 15133 | 3.45 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream O | 14 | As per master stream file | 239.50.51.34 | 15034 | 239.50.51.134 | 15134 | 3.45 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream P | 15 | As per master stream file | 239.50.51.35 | 15035 | 239.50.51.135 | 15135 | 3.45 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | | 16 | | 239.50.51.36 | 15036 | 239.50.51.136 | 15136 | 3.45 Mbps | | FO Stream Q | | As per master stream file | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream R | 17 | As per master stream file | 239.50.51.37 | 15037 | 239.50.51.137 | 15137 | 3.45 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | | | FO Stream S | 18 | As per master stream file | 239.50.51.38 | 15038 | 239.50.51.138 | 15138 | 3.45 Mbps | | | | | 239.50.51.20 | 15020 | 239.50.51.20 | 15020 | |
Source details
- Source
- National Stock Exchange of India
- Type
- circular
- Published by source
- 21 Jul 2026
- Document number
- NSE/MSD/75324
- Issuing division
- MEMBER SERVICE DEPARTMENT
- Effective date
- 05 Sept 2026
- Coverage area
- securities