Zerodha @17.5 million clients, Groww @16.9 million: How retail investing built billionaires

India’s retail investing landscape has expanded sharply, with Zerodha now serving over 17.5 million clients and Groww reaching 16.9 million active users. The growth of these platforms has not only widened market access but also created substantial fortunes for the entrepreneurs behind India’s new-age brokerage businesses.