Brokers assess impact as Sebi’s closing auction cuts Bank Nifty futures volume and value by about half since 3 August

Sebi's closing auction session, introduced on August 3, has reportedly cut Bank Nifty futures trading volume and value by roughly half. The rule change implies weaker near-term liquidity and turnover in a key Indian index derivative, pressuring execution conditions and potentially reducing broker commission pools tied to F&O activity. Market participants are reassessing how the new close impacts participation and hedging behavior.