BSE announces changes to the Short Term Additional Surveillance Measure (ST-ASM) framework with 12 securities being added, 7 securities moving out, and stage changes for various securities effective December 18, 2025.
Impact
Medium
Severity
Medium
Justification
Affects 19 securities with changes to surveillance framework, impacting trading conditions for specific stocks. Important for traders and investors in these securities.
NSE places four securities under ST-ASM Stage I with 50% margin requirement, moves one security from Stage II to Stage I, and excludes two securities from ASM framework effective December 18-19, 2025.
Impact
High
Severity
High
Justification
Significant margin increase to 50% for affected securities impacts trading activity and liquidity; affects multiple securities with immediate effect
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.
BSE sought clarifications from Shree Rama Multi-Tech Limited and Jindal Poly Films Limited regarding significant price and volume movements in their securities
Impact
Low
Severity
Low
Justification
Routine surveillance clarifications with standard responses from companies indicating no undisclosed price-sensitive information
BSE publishes clarifications from Shree Rama Multi-Tech Limited and Jindal Poly Films Limited regarding recent price and volume movements in their securities.
Impact
Low
Severity
Low
Justification
Routine clarifications on market-driven movements with no material impact on operations or compliance requirements