BSE announces changes to the Short Term Additional Surveillance Measure (ST-ASM) framework with 12 securities being added, 7 securities moving out, and stage changes for various securities effective December 18, 2025.
Impact
Medium
Severity
Medium
Justification
Affects 19 securities with changes to surveillance framework, impacting trading conditions for specific stocks. Important for traders and investors in these securities.
BSE circular regarding securities being added to, moved within, or removed from the Short Term ASM framework effective December 18, 2025.
Impact
Medium
Severity
Medium
Justification
Affects trading conditions for 19 securities through ST-ASM framework additions and removals, impacting liquidity and trading flexibility for these stocks.
NSE places four securities under ST-ASM Stage I with 50% margin requirement, moves one security from Stage II to Stage I, and excludes two securities from ASM framework effective December 18-19, 2025.
Impact
High
Severity
High
Justification
Significant margin increase to 50% for affected securities impacts trading activity and liquidity; affects multiple securities with immediate effect
BSE demat auction for settlement number 778 covering delivery shortfalls across 96 scrips with quantities ranging from 1 to 10 million shares.
Impact
Medium
Severity
Medium
Justification
Routine demat auction affecting 96 scrips with varying quantities. While operationally significant for affected members, this is a standard settlement mechanism for delivery shortfalls.
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.
BSE demat auction settlement notice listing securities and quantities to be auctioned for settlement number 747 dated November 3, 2025.
Impact
Medium
Severity
Medium
Justification
Routine demat auction affecting multiple securities with varying quantities; impacts market participants who failed to deliver shares in settlement 747
BSE announces demat auction settlement 747 covering 118 scrips with specified quantities for settlement dated November 3, 2025.
Impact
Medium
Severity
Medium
Justification
Routine demat auction settlement affecting 118 scrips with varying quantities. Important for specific brokers/clients with delivery obligations but not market-wide impact.
BSE settlement auction for delivery obligations with listing of scrips and quantities for settlement number 729.
Impact
Medium
Severity
Medium
Justification
Routine demat auction for settlement of delivery obligations affecting multiple scrips with varying quantities. Standard market operation procedure for clearing non-delivered securities.