NIO is one of the most popular ways for Robinhood investors to gain exposure to the potentially massive EV market in China. In 2020, NIO reported impressive 108% revenue growth, but it still delivered just 31,430 vehicles for the entire year. Given its market cap of around $60 billion, company shares currently trade at more than 25 times sales – an even higher valuation than Tesla. In 2020, NIO shares rallied more than 1,100%, but they are down 30% year to date. However, Robinhood investors seem to be holding on for the long haul.