Zerodha co-founder Nithin Kamath said that the brokerage may have to let go of zero brokerage structure or increase brokerage for F&O trades. Zerodha co-founder Nithin Kamath "This circular has a significant impact on brokers, traders, and investors," Nithin Kamath said, adding that stock exchanges charge transaction fees based on the overall turnover contributed by brokers. Zerodha is one one …