Description
NSE circular announcing addition of 6 securities to ST-ASM Stage I and exclusion of 4 securities from the ASM framework, effective March 11, 2026.
Summary
NSE has announced changes to the Short-Term Additional Surveillance Measure (ST-ASM) framework effective March 11, 2026. Six securities have been newly added to ST-ASM Stage I, no securities have been moved between stages, and four securities have been excluded from the ASM framework entirely.
Key Points
- 6 securities newly shortlisted under ST-ASM Stage I effective March 11, 2026
- No securities moved to ST-ASM Stage II (Nil)
- No securities moved from Stage II to Stage I (Nil)
- 4 securities excluded from the ASM framework effective March 11, 2026
- Consolidated ASM list includes 27+ securities across Stage I and Stage II
Regulatory Changes
The ST-ASM framework is a surveillance mechanism used by NSE to monitor securities exhibiting unusual price or volume movements. Inclusion in the framework results in enhanced margin requirements and trading restrictions to protect market integrity.
Compliance Requirements
- Brokers and trading members must apply enhanced surveillance margins for ST-ASM listed securities
- Investors holding or trading in newly added securities should be aware of increased margin requirements effective March 11, 2026
- Members must update their risk management systems to reflect the new ST-ASM list
Important Dates
- Effective Date: March 11, 2026 — All additions and exclusions come into effect
Impact Assessment
Newly Added to ST-ASM Stage I (effective March 11, 2026):
| Symbol | Security Name | ISIN |
|---|---|---|
| DEEDEV | DEE Development Engineers Limited | INE841L01016 |
| DSFCL | DCM Shriram Fine Chemicals Limited | INE0OFM01015 |
| HINDOILEXP | Hindustan Oil Exploration Company Limited | INE345A01011 |
| INDOUS | Indo Us Biotech Limited | INE250Z01010 |
| INFOBEAN | InfoBeans Technologies Limited | INE344S01016 |
| JINDRILL | Jindal Drilling And Industries Limited | INE742C01031 |
Excluded from ASM Framework (effective March 11, 2026):
| Symbol | Security Name | ISIN |
|---|---|---|
| RAMANEWS | Shree Rama Newsprint Limited | INE278B01020 |
| RGL | Renaissance Global Limited | INE722H01024 |
| RTL | Rama Telecom Limited | INE14W901010 |
| WHITEFORCE | Happy Square Outsourcing Services Limited | INE0TLP01015 |
Traders and investors in the newly added ST-ASM Stage I securities will face higher margin requirements, which may reduce liquidity and increase the cost of holding positions. The exclusion of 4 securities from the ASM framework signals improved price behaviour and may restore normal trading conditions for those stocks.
Impact Justification
Directly affects trading conditions for multiple listed securities; ST-ASM inclusion imposes margin and trading restrictions on affected stocks, significantly impacting traders and investors holding or tracking these securities.