NSE applies Short-Term Additional Surveillance Measure (ST-ASM) to 24 new securities under Stage I, moves CEDAAR to Stage II, and excludes 13 securities from the ASM framework, all effective April 24, 2026.
Impact
High
Severity
High
Justification
Directly affects trading conditions (margins, price bands, surveillance) for 38 securities across addition, escalation, and exclusion actions; traders and investors in these stocks must act before April 24, 2026.
NSE places 15 securities under ST-ASM Stage I with 50% margin requirement effective April 9, 2026. No securities added to Stage II.
Impact
High
Severity
High
Justification
Directly affects trading in 15 securities with mandatory 50% margin requirement, impacting traders holding or creating positions in these stocks from April 9, 2026.
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.
BSE demat auction settlement listing securities and quantities available for auction dated December 8, 2025.
Impact
Medium
Severity
Medium
Justification
Routine demat auction settlement affecting multiple securities with varying quantities; impacts specific shareholders and brokers involved in settlement obligations
BSE demat auction settlement listing 93 scrips across various companies with quantities to be auctioned on December 8, 2025.
Impact
Medium
Severity
Medium
Justification
Routine demat auction settlement affecting 93 scrips with varying quantities; impacts specific shareholders who failed to deliver securities but has limited broader market impact
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.