NSE implements Short-Term Additional Surveillance Measure (ST-ASM) for 6 securities with increased margin requirements of 50% or existing margin (whichever higher, capped at 100%) effective February 03, 2026.
Impact
High
Severity
Medium
Justification
High impact due to significant margin increase (50% minimum) affecting trading in 6 securities. Important for market participants holding or trading these stocks to avoid margin shortfalls.
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.