BSE circular detailing securities entering, exiting, and continuing in the Short Term Additional Surveillance Measure framework effective November 04, 2025.
Impact
Medium
Severity
Medium
Justification
Affects trading conditions for 19 securities entering ST-ASM and 11 securities exiting the framework, impacting liquidity and trading margins for these stocks
BSE circular detailing securities entering, exiting, and moving between stages of the Short Term Additional Surveillance Measure (ST-ASM) framework effective November 04, 2025.
Impact
High
Severity
High
Justification
ST-ASM framework significantly impacts trading conditions for listed securities, affecting liquidity and investor participation. Changes effective immediately require trader awareness.
NSE adds Chennai Petroleum Corporation Limited, Pasupati Acrylon Limited, and Renol Polychem Limited to Short-Term ASM Stage I framework with enhanced margin requirements effective November 6, 2025.
Impact
High
Severity
High
Justification
High margin requirements (50% or existing, whichever higher, capped at 100%) significantly impact trading in three securities, affecting both existing and new positions
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.