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BSE investors anxious about CAS, but there’s a glimmer of hope
GENERAL
7 Sept 2026

BSE investors anxious about CAS, but there’s a glimmer of hope

BSE shares jumped about 8% in two sessions as options turnover picked up in September. Investors hope Sebi will review the closing auction session (CAS), introduced on 3 August to set closing prices. CAS replaced the old volume-weighted average price method. It cut derivatives volumes and could weigh on BSE's Q2 transaction income. However, early September recovery offers some hope.

Key Statutory Highlights

  • BSE shares gained nearly 8% in two sessions as options turnover rebounded in September.
  • CAS, introduced from 3 August, replaced VWAP and led to price swings and falling derivatives volumes.
  • BSE's average daily option premium turnover in the first four September sessions recovered to ₹26,184 crore, about 40% higher than August.
Actionable Advice for Taxpayers / Founders:Keep an eye on Sebi's review of CAS and BSE's September turnover data before making decisions, as Q2 transaction income could still be lower.
Statutory Disclaimer: TaxQue Shorts are AI-assisted editorial briefs for compliance awareness. This brief has not passed every source check; confirm the original notification before acting. This does not constitute formal legal or CA counsel.
TaxQue News Desk
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