Robinhood has been one of the hottest stocks of 2025.In January, I highlighted Robinhood Markets (HOOD 2.79%) as a stock to buy for long-term investors, despite doubts about whether the company could do more than disrupt the brokerage industry. Back then, it was trading around $40 per share, and many still questioned its staying power.Fast-forward six months -- not yet the long term -- and the stock has surged past $100, lifting its market capitalization to nearly $90 billion, resulting in a remarkable 173% ...