NSE introduces Short-Term Additional Surveillance Measure (ST-ASM) Stage I for Sheetal Cool Products Limited with 50% margin requirement effective December 15, 2025. Two securities excluded from ASM framework.
Impact
Medium
Severity
Medium
Justification
Affects one security with enhanced margin requirements under ST-ASM Stage I. Two securities removed from ASM framework. Standard surveillance action with limited market-wide impact.
NSE circular on securities shortlisted for Short-Term Additional Surveillance Measure (ST-ASM) framework effective December 05, 2025, with one security added to Stage I and three securities excluded.
Impact
Medium
Severity
Medium
Justification
Affects trading surveillance for specific securities with enhanced monitoring requirements. Gurunanak Agriculture India Limited added to ST-ASM Stage I, while three securities excluded from framework.
NSE implements Short-Term Additional Surveillance Measure (ST-ASM) Stage I on two securities - De Neers Tools Limited and Holmarc Opto-Mechatronics Limited, with 50% margin requirements effective December 5, 2025.
Impact
High
Severity
High
Justification
High margin requirements (50% or existing margin, whichever higher, capped at 100%) significantly impact trading in affected securities and impose substantial capital requirements on market participants holding positions in these stocks.
NSE circular listing 324 securities subject to Reversal Trade Cancellation Mechanism (RTCM) for November 2025, a surveillance measure to prevent price manipulation.
Impact
High
Severity
Medium
Justification
RTCM is a critical surveillance mechanism affecting 324 securities, enabling NSE to cancel erroneous or manipulative trades. High impact on trading operations and investor protection, though routine monthly update.