Based in Menlo Park, California, Robinhood (HOOD) operates a platform for trading assets such as stocks, options, and cryptocurrencies. I am bullish on the stock. Whether you know it or not, you're bearing witness to a revolution in the financial markets. Long gone are the days when people had to call up a broker and pay hefty fees to buy and sell stocks and exchange traded funds (ETFs). Today, many ETFs have low expense ratios and online, self-directed brokers dominate the retail-trading landscape. Spearheading this movement is Robinhood, which pioneered the low-to-no-fee, app-driven trading revolution. Ironically enough, though, Robinhood stock hasn't risen with that revolution.