Mutual funds remain the most attractive investment tool for retail investors and a lot of innovation is happening in this area, said Groww co-founder and CEO Lalit Keshre at the NDTV World Summit on Tuesday. Mr Keshre, who started Groww in 2016 with three other co-founders, spoke about the tremendous rise in retail investing in India and what led to this significant increase in investors' trust, during a fireside chat on Day 2 of the summit.