Bill Gates and Ken Fisher are quietly sitting on massive gains from one of 2025's most overlooked winners. Caterpillar Inc (NYSE:CAT) , now the top-performing stock in the Dow, is up more than 62% year-to-date. CAT stock’s rally has added roughly $1.7 billion in combined value to holdings tied to the Gates Foundation and Fisher Asset Management, even as flashier names like Nvidia Corp (NASDAQ:NVDA) continued to grab the headlines.Track CAT stock here.The rally hasn't been driven by hype or headline-grabbing ...