This industry disruptor earned its reputation on meme stocks but aspires to become a do-it-all platform for your financial needs.Investing in Robinhood Markets (HOOD -1.79%) has been a rollercoaster. The new-age stock brokerage and financial services company began trading at $38 per share in the summer of 2021 but has bounced around, peaking at $70 before falling below $7 just a year later.The company is growing thanks to innovative products and a well-designed trading platform. The stock has responded, sur ...