Updated position limits for derivatives trading including MWPL, client limits, proprietary limits, TM limits, FPI and MF limits across multiple securities.
Impact
High
Severity
Medium
Justification
Critical reference document for F&O traders, brokers, FPIs and mutual funds defining maximum permissible positions across client, proprietary, and institutional categories for 42+ actively traded securities
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.