India's largest stockbroking platform Zerodha's profit has more than doubled to ₹1,000 crore in 2020-21 as against ₹440 crore in FY20, CEO Nithin Kamath said. The broking business is a risky business with most of the revenue coming from active traders with leveraged positions, he said. Active traders take the risk and brokers earn from the positions taken, Kamath added.