NSE revises market lots for derivatives contracts on 50 individual stocks effective April 29, 2026, pursuant to SEBI guidelines for periodic lot size revision (SEBI circular dated December 30, 2024).
Impact
High
Severity
High
Justification
Affects derivatives contracts across 50 underlying stocks covering major indices constituents; requires members to update trading systems before April 29, 2026. Lot size changes directly impact margin requirements, position limits, and trading strategies for a large number of widely-traded F&O stocks.
NSE Clearing Limited releases the revised list of securities available for transactions under the Securities Lending and Borrowing Scheme (SLBS) for April 2026, containing over 175+ eligible securities.
Impact
Medium
Severity
Low
Justification
Routine monthly update to the SLBS eligible securities list effective April 2026, relevant to participants and custodians engaged in securities lending and borrowing. Impacts a broad universe of stocks but is a standard periodic revision rather than a structural change.
NSE circular specifying Market Wide Position Limits (MWPL) and trading limits for TM, FII/FPI Category I & II, and Mutual Funds across F&O eligible securities effective March 2026.
Impact
High
Severity
Medium
Justification
Routine periodic MWPL update affecting all F&O market participants including trading members, FIIs/FPIs, and mutual funds; high impact due to mandatory position limit compliance obligations across a large number of actively traded securities.
NSE revises the strike scheme for stock options, updating step values and number of strikes for multiple securities effective April 1, 2026. Members must load updated contract.gz file before trading.
Impact
Medium
Severity
Medium
Justification
Operational update affecting derivatives traders who trade stock options; requires technical action (loading updated contract.gz) before April 1, 2026. Impacts multiple large-cap and mid-cap stocks but is a routine periodic revision rather than a structural market change.
NSE Clearing Limited publishes the revised list of securities available for transactions under the Securities Lending & Borrowing Scheme (SLBS) for the month of March 2026, comprising hundreds of eligible symbols.
Impact
Medium
Severity
Low
Justification
Routine monthly update to the SLBS-eligible securities list affecting participants and custodians engaged in securities lending and borrowing. Impacts a broad set of securities across the market for March 2026 but is a standard periodic revision rather than a policy change.
NSE notifies the listing of privately placed commercial paper and other debt securities from various financial institutions on the debt market segment effective January 30, 2026.
Impact
Low
Severity
Low
Justification
Routine listing notification for privately placed debt securities with no regulatory changes or compliance requirements for broader market participants
BSE Demat auction details for Settlement No. 806 dated January 28, 2026, listing securities and quantities for auction across multiple scrips.
Impact
Medium
Severity
Medium
Justification
Routine demat auction affecting multiple securities with specific quantities. Impacts brokers and investors with settlement obligations for the listed scrips.
BSE publishes list of securities and quantities for demat auction settlement number 806 scheduled for January 28, 2026.
Impact
Medium
Severity
Medium
Justification
Routine demat auction affecting multiple securities with delivery shortfalls. Impacts specific brokers and clients who failed to deliver shares on settlement date.
BSE demat auction settlement listing securities and quantities for auction on January 28, 2026.
Impact
Medium
Severity
Medium
Justification
Routine demat auction settlement affecting multiple securities with specific quantities to be auctioned, primarily impacting brokers and investors with pending delivery obligations