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.
NSE circular announcing securities being placed under Short-Term Additional Surveillance Measure (ST-ASM) framework, effective October 27, 2025.
Impact
Medium
Severity
Medium
Justification
Affects trading in 30 securities under ST-ASM framework with enhanced surveillance measures including stricter price bands and settlement requirements for Stage I securities
NSE implements Short-Term Additional Surveillance Measure (ST-ASM) Stage I on ATC Energies System Limited with 50% margin requirement effective October 23, 2025.
Impact
Medium
Severity
Medium
Justification
Affects one security with enhanced margin requirements under surveillance framework. Medium impact for investors holding or trading ATCENERGY.