Applicability of Short-Term Additional Surveillance Measure
NSE circular 558/2026 · 24 Jul 2026
Official title
Applicability of Short-Term Additional Surveillance Measure (ST-ASM)
Official record
Open source pageSummary
Check the official recordWhat changed
The National Stock Exchange of India has identified specific securities that meet the criteria for inclusion under Stage I of the Short-Term Additional Surveillance Measure (ST-ASM) framework. Effective July 28, 2026, these securities will be subject to a margin rate of 50% or the existing margin, whichever is higher, capped at a maximum of 100%. This requirement applies to all open positions as of July 27, 2026, and any new positions created from the effective date. The exchange clarifies that this measure is a surveillance action and does not constitute an adverse action against the affected entities. The ST-ASM framework operates in conjunction with other prevailing surveillance measures.
What you must do
- Apply a margin rate of 50% or the existing margin, whichever is higher, capped at 100%, for securities listed in Annexure I.
Key dates
- Effective from
- 28 Jul 2026
Document text
National Stock Exchange of India Limited
Circular
| Department: SURVEILLANCE | |
|---|---|
| Download Ref No: NSE/SURV/75395 | Date: July 24, 2026 |
| Circular Ref. No: 558/2026 |
To All NSE Members
Sub: Applicability of Short-Term Additional Surveillance Measure (ST-ASM)
This is further to Exchange Circular nos. NSE/SURV/39265, NSE/SURV/46557, NSE/SURV/52144, NSE/SURV/58558 and NSE/SURV/64066 dated October 27, 2018, December 04, 2020, April 28, 2022 September 25, 2023 and September 20, 2024 respectively, in respect of Additional Surveillance Measure (ASM).
Members are hereby requested to note that the securities as per attached Annexure I have satisfied the criteria for inclusion under ST-ASM Stage I. The applicable surveillance actions shall be as per provisions of the Short-Term Additional Surveillance Measure (ST-ASM) which are as under:
- Applicable rate of margin shall be 50% or existing margin, whichever is higher, subject to maximum rate of margin capped at 100% w.e.f. July 28, 2026 on all open positions as on July 27, 2026 and new positions created from July 28, 2026.
Market participants may note that ASM framework shall be in conjunction with all other prevailing surveillance measures being imposed by the Exchanges from time to time.
The Price Band of a scrip moving out of the framework shall be reinstated to the Price Band applicable to that scrip before it got shortlisted under the respective framework. This will be subject to the scrip not being shortlisted or part of any other Surveillance measure, in which case, the price band of the relevant surveillance framework will prevail.
Further, it may also be noted that the shortlisting of securities under ASM 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 Additional Surveillance Measure please refer to our Frequently Asked Questions (FAQs) - https://www.nseindia.com/regulations/additional-surveillance-measure
In case of any further queries, you may write to us at surveillance@nse.co.in.
For National Stock Exchange of India Limited
Sumit Loya Chief Manager Surveillance
Source details
- Source
- National Stock Exchange of India
- Type
- circular
- Published by source
- 24 Jul 2026
- Document number
- 558/2026
- Issuing division
- SURVEILLANCE
- Effective date
- 28 Jul 2026
- Coverage area
- securities