NSE places 5 securities under ST-ASM Stage I effective May 14-15, 2026, requiring 50% margin or higher on all open and new positions. No securities added to Stage II.
Impact
High
Severity
High
Justification
Directly restricts trading in 5 securities by imposing 50% margin requirements, affecting traders with open or new positions from May 15, 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 updates the list of securities subject to Short Term Additional Surveillance Measure framework, including new inclusions, movements between stages, and exclusions effective January 06, 2026.
Impact
High
Severity
High
Justification
ST-ASM framework imposes significant trading restrictions on listed securities due to price volatility or other surveillance concerns, directly affecting trading liquidity and investor access for multiple securities.
BSE announces securities being added to and removed from the Short Term ASM Framework effective January 06, 2026, with 8 securities newly shortlisted and 8 securities moving out.
Impact
Medium
Severity
Medium
Justification
Affects 16 securities with changes to surveillance framework, impacting trading conditions for these stocks but limited to specific securities rather than market-wide impact
NSE imposes Short-Term Additional Surveillance Measure (ST-ASM) Stage I on 4 securities with increased margin requirements effective January 7, 2026, and excludes 2 securities from ASM framework.
Impact
Medium
Severity
Medium
Justification
Medium importance as it affects specific securities with enhanced margin requirements of 50% minimum. Direct impact on traders and investors holding positions in the 4 securities entering ST-ASM Stage I, requiring increased capital commitment.
Companies provide clarifications to BSE regarding significant movements in price and trading volume of their securities, attributing changes to market conditions.
Impact
Low
Severity
Low
Justification
Routine clarifications provided by companies in response to exchange queries about price/volume movements, with no material information disclosed
Three companies provided clarifications to BSE regarding significant movements in their stock prices and trading volumes, attributing the changes to market conditions.
Impact
Low
Severity
Low
Justification
Routine surveillance clarifications with no material corporate developments; companies attribute movements to market conditions
BSE circular on securities moving into, within, and out of the Short Term Additional Surveillance Measure (ST-ASM) framework effective December 29, 2025.
Impact
Medium
Severity
Medium
Justification
Surveillance measure affecting 25 securities with trading restrictions. Significant for investors in affected stocks but limited broader market impact.