Robinhood Markets (HOOD 2.79%) has experienced an impressive surge over the past year, capturing investors with its remarkable turnaround. After facing scrutiny for its payment-for-order-flow business model and its role in the 2021 meme stock frenzy, the company is becoming a formidable player in the financial landscape.Robinhood is adding customers and assets at an impressive rate, and it continues to do so as it upgrades its platform, grows the business, and expands the investments its customers can purch ...