Robinhood CEO: How I was rejected by 75 investors but still built a $1.3 billion app

Summary: Vlad Tenev is co-founder and co-CEO of Robinhood, a mobile app that let's you trade stocks free of charge. It's only a few years old and millennials are all over it – the average age of the app’s two million users is 30 years old. The latest fundraising round valued the app at about $1.3 billion, with backers like Snoop Dogg and Marc Andreessen. But it took a lot for Robinhood to get where it is today, which he explains in this episode of "Success! How I Did It" with Business Insider US Editor-in-Chief, Alyson Shontell.