Robinhood is an online investment application that enables retail investors to directly access the stock, ETF, and Options markets without middlemen (brokers). Signing up is easy and only takes a few steps. Users have to satisfy that they are over 18 years of age, reside in the US, and have a Social Security Number (SSN). With that, anyone with an account can start trading with as little as $10 commission-free. Account activations are typically done in less than an hour allowing the customer to deposit funds and start investing.