Investors who choose to actively manage their portfolios, picking individual businesses in the process, probably want to beat the market over the long term. To achieve this goal, perhaps it's a good idea to look at past winners. Maybe the good times will continue.Artificial intelligence might be getting all the attention. However, there's one booming footwear stock that has skyrocketed 465% in the past five years (as of May 14). That kind of stellar performance deserves a closer look.Is this the smartest st ...