NSE Surveillance circular updating the list of symbols subject to the Reversal Trade Cancellation Mechanism (RTCM) for May 2026, covering series EQ, BE, BZ, SM, ST & SZ across approximately 175 designated securities.
Impact
Medium
Severity
Medium
Justification
Routine monthly update to the RTCM symbol list for May 2026 affecting ~175 smaller/mid-cap securities; important for trading members handling these stocks but limited broader market impact since Nifty 500 and NSE Clearing-approved securities are excluded.
NSE places 51 securities under Short-Term ASM Framework Stage-I effective April 27, 2026, with no securities added to Stage-II and no movement between stages.
Impact
High
Severity
Medium
Justification
51 securities placed under Short-Term ASM Stage-I affecting a broad set of listed companies with enhanced surveillance and potential trading restrictions from April 27, 2026.
NSE includes 6 securities under ST-ASM Stage I effective April 07, 2026, with enhanced margin requirements of 50% or existing margin (whichever is higher) applicable from April 08, 2026.
Impact
High
Severity
High
Justification
Directly affects trading conditions for 6 securities with significantly increased margin requirements, impacting traders holding or planning positions in these stocks from April 08, 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.
NSE updates the list of securities under Enhanced Surveillance Measure (ESM) framework with movements between stages and exclusions effective January 12, 2026.
Impact
Medium
Severity
Medium
Justification
Regular surveillance framework update affecting multiple securities with stage movements and segment changes. Important for investors in listed securities but part of routine surveillance operations.
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.
NSE announces securities moving into ESM Stage-I effective October 07, 2025, including 4 new securities with trading segment changes for some stocks effective October 08, 2025.
Impact
High
Severity
High
Justification
Affects multiple securities with enhanced surveillance restrictions and trading segment changes from EQ/SM to BE/ST, significantly impacting trading activity and investor access