NSE circular notifying inclusion of 10 securities under Long-Term ASM Stage-I and movement of 1 security from Stage-I to Stage-II, with 100% margin requirement applicable from April 23, 2026.
Impact
High
Severity
High
Justification
Imposes 100% margin requirement on 10 securities and moves 1 to Stage-II; Stage-IV shifts trigger segment change from EQ to BE (Trade-for-Trade), significantly affecting trading and liquidity for affected stocks.
NSE places 14 securities under ST-ASM Stage I and additional securities under ST-ASM Stage II effective April 21, 2026, with margin requirements of 50%-100% on open and new positions.
Impact
High
Severity
High
Justification
Directly imposes elevated margin requirements (50%-100%) on 14+ named securities effective April 21, 2026, significantly affecting trading costs and positions for market participants holding these stocks.
NSE announces the list of securities subject to the Reversal Trade Cancellation Mechanism (RTCM) for April 2026, covering 300+ stocks under enhanced surveillance.
Impact
High
Severity
High
Justification
RTCM is an NSE surveillance measure that directly cancels reversal trades in listed securities. Inclusion in this list significantly restricts trading patterns for 300+ stocks in the cash market segment for April 2026, with immediate and direct impact on trading activity and liquidity for affected securities.
NSE releases the updated list of 300+ securities subject to the Reversal Trade Cancellation Mechanism (RTCM) for March 2026, a surveillance measure to cancel trades that are reversed within a short timeframe.
Impact
Medium
Severity
Medium
Justification
Affects 300+ securities listed on NSE; RTCM is an active surveillance tool that can result in trade cancellations for reversal patterns, directly impacting traders and brokers dealing in these stocks. High importance due to the large number of securities covered; medium impact as it targets a specific trading behaviour rather than broad market restrictions.
NSE announces list of 323 securities subject to Reversal Trade Mechanism (RTCM) effective February 2026.
Impact
Medium
Severity
Medium
Justification
RTCM is a surveillance measure affecting 323 securities with enhanced monitoring and potential trading reversals to manage market risk and protect investors from abnormal price movements.
NSE adds Globesecure Technologies Limited to ESM Stage-I effective December 9, 2025, and provides consolidated list of 58 securities under enhanced surveillance framework.
Impact
High
Severity
High
Justification
High importance and impact due to addition of new security to ESM framework with immediate trading restrictions, affecting investor sentiment and liquidity for all 58 securities under surveillance.
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 updates Enhanced Surveillance Measure framework with new securities added to ESM Stage-I, movements between stages, and minimum 100% margin requirements effective November 19, 2025.
Impact
High
Severity
High
Justification
Imposes 100% margin requirement and shifts securities to Trade-for-Trade segment, significantly impacting trading in affected securities and investor positions
NSE introduces Short-Term Additional Surveillance Measure (ST-ASM) Stage I for four securities with increased margin requirements of 50% or existing margin (whichever is higher) effective November 11, 2025.
Impact
Medium
Severity
Medium
Justification
Impacts specific securities with increased margin requirements which affects trading liquidity and costs for market participants holding positions in these stocks