Applicability of Short Term Additional Surveillance Measure
BSE notice 20260518-34 · 18 May 2026
Official title
Applicability of Short Term Additional Surveillance Measure (ST-ASM)
Official record
Open source pageSummary
Check the official recordWhat changed
BSE identifies specific securities for inclusion under Short Term Additional Surveillance Measure (ST-ASM) Stage I and Stage II. For Stage I securities, the margin rate is 50 percent or the existing margin, whichever is higher, capped at 100 percent. For Stage II securities, the margin rate is 100 percent or the existing margin, whichever is higher, capped at 100 percent. These measures apply to all open positions as of May 19, 2026, and all new positions created from May 20, 2026. The ASM framework operates alongside other existing surveillance measures. This action results from market surveillance and does not represent an adverse action against the affected entities.
What you must do
- Apply a 50 percent margin rate or existing margin, whichever is higher, for Stage I securities.
- Apply a 100 percent margin rate or existing margin, whichever is higher, for Stage II securities.
Key dates
Document text
[Image omitted. See the official document.]
NOTICE
| Notice No. | 20260518-34 |
|---|---|
| Notice Date | 18 May 2026 |
| Category | Trading |
| Segment | Equity |
| Department | DOSS |
| Subject | Applicability of Short Term Additional Surveillance Measure (ST-ASM) |
| Attachments | Annexure_STASM |
This is further to Exchange notice no. 20240920-71 dated September 20, 2024, 20181027-1 dated October 27, 2018, 20190719-33 dated 19 Jul 2019, 20201204-56 dated 04 Dec 2020, 20230925-49 dated 25 Sep 2023 and 20240920-63 dated 20 Sep 2024 regarding revision of ASM framework.
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. May 20, 2026 on all open positions as on May 19, 2026 and new positions created from May 20, 2026.
Securities as per attached Annexure I have satisfied the criteria for inclusion under ST-ASM Stage II. The applicable surveillance actions shall be as per provisions of the Short-Term Additional Surveillance Measure (ST-ASM) which are as under:
➢ Applicable margin rate shall be 100% or existing margin whichever is higher subject to maximum rate of margin capped at 100%. w.e.f. May 20, 2026 on all open positions as on May 19, 2026 and new positions created from May 20, 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.
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.
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.
In case of any clarifications, members may write to us at bse.surv@bseindia.com
For & On behalf of BSE Ltd.
Sanjay Jain
Deputy Vice President
Surveillance
Arpita Joshi
Manager
Surveillance
Source details
- Source
- BSE Ltd (Bombay Stock Exchange)
- Type
- notice
- Published by source
- 18 May 2026
- Document number
- 20260518-34
- Issuing division
- DOSS
- Effective date
- 20 May 2026
- Coverage area
- securities