When it comes to bitcoin trading (HOOD), you may not immediately think of Robinhood Markets Inc. This mobile app is well-known for offering commission-free stock trading - and for banning users from selling GameStop Corp. (GME) and other "meme stocks" earlier in 2021 - and is a stock-first application. In 2018, Robinhood began offering cryptocurrency trading. Since then, the company has expanded its crypto offerings. Investors looking for exposure to the most popular cryptocurrencies may find this cryptocurrency exchange a viable option.