BSE updates on securities entering and exiting Short Term ASM framework effective December 29, 2025, including 9 new additions and 15 removals.
Impact
Medium
Severity
Medium
Justification
Affects trading conditions for 25 securities with 9 additions and 15 removals from ST-ASM framework, impacting liquidity and trading patterns for affected stocks
NSE circular regarding securities being placed under Short-Term Additional Surveillance Measure (ST-ASM) Stage I with increased margin requirements of 50% effective December 30, 2025.
Impact
Medium
Severity
Medium
Justification
Affects four securities with enhanced margin requirements of 50% minimum, impacting trading positions and costs for these stocks. Surveillance measure is routine market monitoring, not punitive action.
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.