NSE adds 20 securities to Enhanced Surveillance Measure (ESM) Stage I effective April 23, 2026, requiring 100% margin and shift from Rolling Settlement to Trade-for-Trade segment.
Impact
High
Severity
High
Justification
20 securities face 100% margin requirements and mandatory segment migration from Rolling Settlement (EQ/SM) to Trade-for-Trade (BE/ST), significantly restricting trading flexibility and increasing cost of participation for market members.
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.
List of securities subject to Reversal Trade Cancellation Mechanism (RTCM) for December 2025, covering over 300 stocks where specific trade cancellation procedures will apply.
Impact
Medium
Severity
Medium
Justification
Affects trading operations for over 300 securities with specific trade cancellation procedures. Important for traders and market participants dealing with these stocks to understand RTCM applicability.
NSE circular announcing securities being placed under Short-Term Additional Surveillance Measure (ST-ASM) framework, effective October 27, 2025.
Impact
Medium
Severity
Medium
Justification
Affects trading in 30 securities under ST-ASM framework with enhanced surveillance measures including stricter price bands and settlement requirements for Stage I securities
NSE implements Short-Term Additional Surveillance Measure (ST-ASM) Stage I on ATC Energies System Limited with 50% margin requirement effective October 23, 2025.
Impact
Medium
Severity
Medium
Justification
Affects one security with enhanced margin requirements under surveillance framework. Medium impact for investors holding or trading ATCENERGY.