Robinhood's stock has been skyrocketing this year and it has plenty of levers to pull on for even more growth in the future.Robinhood Markets (HOOD +6.49%) went public just over four years ago, and it has already grown to a market cap of around $130 billion. It has established itself as a top trading platform, especially among young investors. In just the past 12 months, the stock has climbed more than 420%.The business has been thriving as its platform makes it easy to trade stocks and crypto, and even pla ...