NSE notifies listing of further preferential allotment securities for Cool Caps Industries Limited (COOLCAPS) and Dynamic Services & Security Limited (DYNAMIC) on SME EMERGE segment, effective April 30, 2026.
Impact
Medium
Severity
Medium
Justification
Routine further issue listing on SME EMERGE for two companies with preferential allotments; impacts existing and prospective shareholders of COOLCAPS and DYNAMIC through dilution and lock-in constraints, but limited to SME segment with no broader market-wide regulatory change.
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 shortlisted under the Short-Term Additional Surveillance Measure (ST-ASM) Framework Stage I, effective April 10, 2026, covering 59+ securities across various sectors.
Impact
High
Severity
High
Justification
Directly affects trading conditions for 59+ listed securities by placing them under ST-ASM Stage I, which imposes additional margin and trading restrictions effective April 10, 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 announces securities shortlisted under Short-Term Additional Surveillance Measure (ST-ASM) Framework effective December 31, 2025, including 5 securities in Stage-I and exclusion of 4 securities from ASM.
Impact
Medium
Severity
Medium
Justification
Affects trading in 5 securities newly added to ST-ASM Stage-I and removes 4 securities from surveillance framework. Medium impact as it changes trading conditions for specific securities.
BSE publishes updated list of 54+ securities under Graded Surveillance Measure (GSM) framework based on Criteria 1 and/or Criteria 2, effective December 15, 2025.
Impact
High
Severity
High
Justification
Enhanced surveillance measures significantly impact trading of 54+ listed securities with additional compliance requirements, price bands, and margin requirements affecting investor access and liquidity.
NSE applies Short-Term Additional Surveillance Measure (ST-ASM) Stage I to 7 securities with 50% margin requirement effective November 26, 2025, and excludes 2 securities from ASM framework.
Impact
High
Severity
High
Justification
High margin requirements of 50% minimum imposed on 7 securities under ST-ASM Stage I framework, significantly impacting trading positions and capital requirements for market participants effective November 26, 2025.