Despite rallying 130% in the past year, DraftKings still has plenty of upside ahead. DraftKings (DKNG -0.78%) has been on a hot streak with the stock more than doubling in the past year. The company has rapidly expanded as more and more U.S. states legalize online sports betting. Given the stock's strong performance, is it is too late to invest in this leader in the online sports betting industry? Potential to get into more states The biggest tailwind for DraftKings has been the gradual rollout of online sp ...