After disrupting the broking business, Nithin Kamath of Zerodha has his target fixed on the next big thing - the Mutual Fund business. What is going to be the game-changer? WIll Zerodha have brick and mortar stores? And will the Kamath brothers ever considering giving up a piece of the chicken that lays the golden egg? Catch this candid conversation with host Suresh Venkat in the run-up to the Et Startup awards.