Nithin Kamath, Zerodha's CEO, cautions that a significant equity market change from August 3 could alter trading patterns at market close and potentially reduce brokerage revenues.
NSE and BSE roll out Closing Auction Session for F&O stocks August 3; Zerodha forecasts 1-5% revenue impact. CAS eliminates closing-price manipulation via order aggregation, but staggered times (3:40pm for derivatives) will confuse retail investors and reshape broker logistics.
CAS will be implemented on August 3
Jul 29, 2026
05:20 pm
What's the storyNithin Kamath, the co-founder and CEO of Zerodha, has warned that a major change in India's equity market structure could impact the brokerage firm's revenue.
The change, which will come into effect on August 3, is the introduction of a Closing Auction Session (CAS) by NSE and BSE for stocks with futures and options (F&O) contracts.
Nithin Kamath warns closing auction session may hit Zerodha’s revenue from August 3
Closing auction for F&O stocks may dent broker revenues, alter end-of-day trading
Explained: What is CAS and what do new stock market timings mean for BSE, NSE traders?
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New stock market timings from August 3: What has changed?
BL Explainer: SEBI’s new Closing Auction Session, what investors need to know
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New market timings from Monday; F&O segment to remain open till 3:40pm
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Zerodha CEO Nithin Kamath said the new Closing Auction Session for F&O stocks could reduce brokerage revenue by 1–5% while making…
India's equity markets will implement a Closing Auction Session (CAS) for F&O stocks starting August 3, 2026, altering how…
Zerodha co-founder Nithin Kamath said the sharp swings under the new Closing Auction Session (CAS) reflect structural weaknesses…
New closing auction for F&O stocks may reduce broker revenues and reshape end-of-day trading dynamics starting August 3.
India's stock market has introduced the Closing Auction Session (CAS) for eligible F&O stocks, changing how closing prices are…
At the start of the new month, confusion has ensued for stock market investors as a new mechanism for closing and revised timings…
