Prediction: Roku Stock Will Double This Year

The S&P 500 just finished another blowout year, highlighting how much sense it makes for investors to park some money in index-based exchange-traded funds (ETFs). The S&P 500 is often used as a proxy for the market, but it only tracks 500 companies out of thousands. It's also an average, which means any of its constituents could be performing much better, or much worse.Roku (ROKU 3.88%) is a popular stock and industry leader that isn't in the S&P 500, and in contrast to the market's strong performance in 20 ...