NSE implements 35% margin requirement on 7 securities with high promoter shareholding encumbrance under SEBI SAST Regulation 28(3), effective January 7, 2026. Sagar Cements removed from framework.
Impact
High
Severity
High
Justification
High margin requirements (35%) significantly impact trading and liquidity for 11 securities. Affects both cash and derivatives segments with immediate compliance requirements.
NSE announces listing of equity shares allotted pursuant to conversion of warrants on preferential basis for Black Box Limited (47,962 shares) and SPML Infra Limited (562,303 shares), effective December 18, 2025.
Impact
Low
Severity
Low
Justification
Routine listing of further issues from warrant conversions for two companies with relatively small share quantities; limited market-wide impact, primarily affects existing shareholders and warrant holders of these specific securities.
NSE circular listing 324 securities subject to Reversal Trade Cancellation Mechanism (RTCM) for November 2025, a surveillance measure to prevent price manipulation.
Impact
High
Severity
Medium
Justification
RTCM is a critical surveillance mechanism affecting 324 securities, enabling NSE to cancel erroneous or manipulative trades. High impact on trading operations and investor protection, though routine monthly update.