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 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 implements Short-Term Additional Surveillance Measure (ST-ASM) Stage I on 5 securities with 50% margin requirement effective February 2, 2026.
Impact
High
Severity
High
Justification
High margin requirement of 50% imposed on shortlisted securities affects trading positions and costs for market participants. Immediate compliance required for all open and new positions.
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 announces changes to Enhanced Surveillance Measure framework with 1 new security added, 5 securities moved to higher stage, 15 moved to lower stage, and 26 securities exiting ESM.
Impact
Medium
Severity
Medium
Justification
Affects 47 securities with varying surveillance measures; impacts trading parameters and investor awareness but represents routine surveillance framework adjustments
BSE announces revised price bands for 38 securities across equity segment, with changes ranging from 2% to 20% bands, effective from January 27, 2026.
Impact
Medium
Severity
Medium
Justification
Affects trading volatility limits for 38 securities; impacts traders and market participants dealing with these specific scrips but represents routine surveillance action rather than systemic market change
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.
BSE announces demat auction for settlement number 740 covering 90 scrips with quantities ranging from 1 to 10,000 shares for delivery settlement.
Impact
Medium
Severity
Medium
Justification
Routine demat auction for delivery settlement affecting 90 scrips. While operationally important for settlement integrity, it represents standard market infrastructure process with limited broader market impact.