NSE implements Long-Term Additional Surveillance Measures on select securities with 100% margin requirement and potential shift to Trade-for-Trade segment effective December 31, 2025.
Impact
High
Severity
High
Justification
High severity due to 100% margin requirement and potential shift to BE segment for affected securities, significantly impacting trading liquidity and investor participation.
NSE announces inclusion of 4 securities under ST-ASM Stage I with increased margin requirements, and exclusion of 6 securities from ASM framework effective December 19, 2025.
Impact
High
Severity
High
Justification
Significant margin increase to 50% minimum for affected securities impacts trading costs and liquidity. Direct operational impact on members trading these stocks.
List of securities subject to Reversal Trade Cancellation Mechanism (RTCM) for December 2025, covering over 300 stocks where specific trade cancellation procedures will apply.
Impact
Medium
Severity
Medium
Justification
Affects trading operations for over 300 securities with specific trade cancellation procedures. Important for traders and market participants dealing with these stocks to understand RTCM applicability.