BSE publishes updated market-wide position limits for 75 securities in the equity derivatives segment, specifying limits for total market positions and client/NRI/mutual fund categories.
Impact
Medium
Severity
Medium
Justification
Regular position limit updates that affect derivatives trading risk management for 75 actively traded securities; essential for compliance but routine operational information
NSE revises strike scheme parameters including step values and number of strikes for stock options, effective December 31, 2025.
Impact
Medium
Severity
Medium
Justification
Technical update affecting F&O traders dealing with stock options. Changes strike intervals and availability which impacts trading strategies but doesn't fundamentally alter market structure.
BSE announces changes to multiple indices including BSE India 150, BSE 150 Midcap, BSE 100 LargeCap TMC, BSE 250 LargeMidCap, and BSE AllCap effective December 22, 2025.
Impact
Medium
Severity
Medium
Justification
Index reconstitution affects passive funds and ETFs tracking these indices, requiring portfolio rebalancing. Medium impact as it involves multiple major BSE indices with significant institutional holdings.
BSE announces reconstitution of multiple indices including BSE India 150, BSE 150 Midcap, BSE 100 Largecap TMC, BSE 250 Largemidcap, and BSE Allcap, effective December 22, 2025.
Impact
Medium
Severity
Medium
Justification
Index reconstitution affects passive fund rebalancing and stock liquidity but is a routine periodic event. Medium impact on affected stocks due to potential fund flows.
BSE announces changes to multiple indices including BSE India 150, BSE 150 Midcap, BSE 100 Largecap TMC, BSE 250 LargeMidcap, and BSE AllCap effective December 22, 2025.
Impact
High
Severity
Medium
Justification
Index reconstitution affects passive fund flows, portfolio rebalancing across multiple BSE indices with 30+ stock additions/deletions, significant impact on institutional trading
BSE demat auction for settlement number 763 covering 122 securities with various quantities to be auctioned on November 26, 2025.
Impact
Medium
Severity
Medium
Justification
Routine demat auction affecting 122 securities with varying quantities. Primarily impacts brokers and market participants with settlement obligations for these specific scrips.
List of securities and quantities subject to demat auction settlement by BSE for settlement number 763 dated November 26, 2025.
Impact
Medium
Severity
Medium
Justification
Demat auction affects specific securities and quantities where delivery obligations were not met, impacting brokers and investors with outstanding positions in these scrips.
NSE publishes updated list of 213+ securities approved for participation in the Securities Lending and Borrowing Scheme, including major indices constituents and blue-chip stocks.
Impact
Medium
Severity
Low
Justification
Regular update to SLBS eligible securities list affects lending/borrowing operations for institutional investors and market makers. Moderate operational impact as it expands or maintains the pool of securities available for lending transactions.