When you're up against companies with household names and centuries of experience, how do you win market share? It's simple: Find out what they don't do well ... and then do that thing very well. That philosophy is what has made Robinhood a fierce competitor in their space. They created a mobile app that makes it easy to buy and sell stocks - for free. In an industry where people typically pay $10 per transaction, Robinhood is quickly gaining traction with both brand new and experienced investors.