NSE updates the list of securities under its high-encumbrance surveillance measure per SEBI SAST Regulation 28(3): 3 securities added with 35% minimum margin requirement effective May 08, 2026, and 9 securities excluded effective May 06, 2026.
Impact
Medium
Severity
Medium
Justification
Routine periodic surveillance update affecting margin requirements for a defined set of securities; directly impacts trading costs and positions for members holding or trading these stocks in Equity and Equity Derivatives segments.
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.
BSE Demat Auction for Settlement No. 828 dated 26 February 2026, listing securities of approximately 100 companies subject to auction due to non-delivery.
Impact
Low
Severity
Low
Justification
Routine demat auction notice for Settlement No. 828 listing securities for auction due to non-delivery. Standard operational circular with no regulatory changes or policy implications.
BSE notifies Demat Auction for Settlement No. 828 dated February 26, 2026, listing 89 securities across various sectors with quantities subject to auction.
Impact
Medium
Severity
Medium
Justification
Routine demat auction notice affecting 89 securities; relevant to brokers and investors holding positions in listed scrips but standard market operations activity with no systemic impact.
BSE announces Demat Auction for Settlement No. 828 dated 26/02/2026, listing securities with quantities to be auctioned due to short delivery obligations across multiple scrips.
Impact
Medium
Severity
Low
Justification
Routine demat auction notice for short delivery settlement; affects 61 securities across various sectors but is a standard market operations process with no systemic significance.
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.
BSE announces shut periods for Securities Lending and Borrowing (SLB) due to dividend corporate actions across 22 companies with record dates between February 11-18, 2026.
Impact
Medium
Severity
Medium
Justification
Affects SLB operations for 22 securities with defined shut periods. Important for participants in securities lending/borrowing but routine corporate action notification.
BSE announces foreclosure dates and shut periods for 22 securities undergoing dividend corporate actions with record dates between February 11-18, 2026.
Impact
Medium
Severity
Medium
Justification
Affects SLB trading in 22 securities with dividend corporate actions. Important for SLB participants to note shut periods to avoid settlement issues.
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.