Applicability of Enhanced Surveillance Measure · 641/2026
NSE circular 641/2026 · 20 Aug 2026
Official title
Applicability of Enhanced Surveillance Measure (ESM)
Official record
Open source pageSummary
Check the official recordWhat changed
The National Stock Exchange updates the list of securities under the Enhanced Surveillance Measure framework. Securities in Annexure I attract a 100 percent margin requirement. These securities move from the Rolling Settlement segment to the Trade-for-Trade segment. Securities in Annexure II exit the framework. Securities that move to Stage II operate under a 2 percent price band within the Periodic Call Auction. These measures apply in addition to existing surveillance rules. The exchange states that this selection results from market surveillance and does not represent adverse action against the companies.
What you must do
- Apply a minimum 100 percent margin on open positions and new positions for securities in Annexure I.
Key dates
- Effective date for Stage II price band
- 21 Aug 2026
Document text
National Stock Exchange of India Limited
Circular
Department: SURVEILLANCE
| Download Ref No: NSE/SURV/75847 | Date: August 20, 2026 |
|---|---|
| Circular Ref. No: 641/2026 |
To All NSE Members
Sub: Applicability of Enhanced Surveillance Measure (ESM)
This is with reference to Exchange Circular nos. NSE/SURV/56948, NSE/SURV/57609, NSE/SURV/63361, NSE/SURV/64066, NSE/SURV/64400, and NSE/SURV/69315 dated June 02, 2023, July 18, 2023, August 09, 2024, September 20, 2024, October 04, 2024, and July 25, 2025 respectively in respect of Enhanced Surveillance Measure (ESM).
Members are hereby requested to note the following:
➢ The securities as per the attached Annexure I have satisfied the criteria for inclusion under aforesaid measure and shall attract a minimum 100% margin w.e.f. August 24, 2026, on all open positions as on August 21, 2026, and new positions created from August 24, 2026. ➢ The securities as given in Annexure II, are eligible to move out from the said framework. ➢ A consolidated list of securities under the framework is given in Annexure III.
Securities qualifying under ESM shall be shifted from Rolling Settlement segment (Series: EQ/SM) to Trade-for-Trade segment (Series: BE/ST) w.e.f. August 24, 2026.
Additionally, securities shifting to Stage II shall be under Trade for Trade with price band of 2% under Periodic Call Auction w.e.f. August 21, 2026.
Market participants may note that the ESM framework shall be in conjunction with all other prevailing surveillance measures being imposed by the Exchanges from time to time.
National Stock Exchange of India Limited
Further, it may also be noted that the shortlisting of securities under ESM is purely on account of market surveillance, and it should not be construed as an adverse action against the concerned company / entity.
For more information on Enhanced Surveillance Measure please refer to our Frequently Asked Questions (FAQs) - https://www.nseindia.com/regulations/enhanced-surveillance-measure-esm
In case of any further queries, you may write to us at surveillance@nse.co.in
For National Stock Exchange of India Limited
Sareesh Koroth
Associate Vice President
Surveillance
Source details
- Source
- National Stock Exchange of India
- Type
- circular
- Published by source
- 20 Aug 2026
- Document number
- 641/2026
- Issuing division
- SURVEILLANCE
- Effective date
- 24 Aug 2026
- Coverage area
- securities