Revision in frequency of real time Index dissemination
NSE circular NSE/MSD/76333 · 11 Sept 2026
Official record
Open source pageSummary
Check the official recordWhat changed
The National Stock Exchange of India Limited updates the dissemination frequency for the Nifty 50 index. The current frequency of 250 milliseconds changes to 100 milliseconds. This change applies to the trading system in the Capital Market and Futures and Options segments. The new frequency becomes effective on September 15, 2026. The exchange conducts a mock session on September 12, 2026, to test this change. All members must note this update for their trading operations.
What you must do
- Members must note the changes in the Nifty 50 index dissemination frequency.
Key dates
- Date of the mock session
- 12 Sept 2026
- Effective from
- 15 Sept 2026
Document text
PRESS RELEASE
Mumbai, September 11, 2026
Higher frequency for real time index dissemination of Nifty 50
This is further to the press release dated April 22, 2026 regarding “Higher frequency for real time index dissemination of Nifty 50 effective May 11, 2026”.
In continuation with aforesaid press release, effective September 15, 2026 Nifty 50 index that is currently disseminated live at a frequency of 250 milliseconds (0.25 second) shall be disseminated live at a frequency of 100 milliseconds (0.10 second).
About NSE Indices Limited:
NSE Indices Limited (formerly known as India Index Services & Products Ltd. - IISL), a subsidiary of NSE, provides a variety of indices and index related services for the capital markets. The company focuses on the index as a core product. The company owns and manages a portfolio of indices under the Nifty brand of NSE, including the flagship index, the Nifty 50. Nifty equity indices comprises broad-based benchmark indices, sectoral indices, strategy indices, thematic indices, and customised indices. NSE Indices Limited also maintains fixed income indices based on Government of India securities, corporate bonds, money market instruments and hybrid indices. Many investment products based on Nifty indices have been developed within India and abroad. These include index-based derivatives traded on NSE and NSE International Exchange IFSC Limited (NSE IX) and a number of index funds and exchange traded funds. The flagship 'Nifty 50' index is widely tracked and traded as the benchmark for Indian Capital Markets.
For more information, please visit: www.niftyindices.com
Press contact:
Email ID: cc@nse.co.in
National Stock Exchange of India Limited
Circular
| Department: MEMBER SERVICE DEPARTMENT | |
|---|---|
| Download Ref No: NSE/MSD/76333 | Date: September 11, 2026 |
| Circular Ref. No: 63/2026 |
All Members,
Revision in frequency of real time Index dissemination
This is with reference to the attached NSE Indices press release dated September 11, 2026, regarding Higher frequency for real time index dissemination.
In accordance with aforesaid press release, members are requested to take note of the below changes in frequency of Nifty 50 index that is currently disseminated on the trading system in CM and FO segments:
| Current frequency of dissemination | Proposed frequency of dissemination |
|---|---|
| 250 milliseconds (0.25 second) | 100 milliseconds (0.10 second) |
This change shall be effective from September 15, 2026, and the same shall be made available in mock session which is planned on September 12, 2026.
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
- 11 Sept 2026
- Document number
- NSE/MSD/76333
- Issuing division
- MEMBER SERVICE DEPARTMENT
- Effective date
- 15 Sept 2026
- Coverage area
- securities