On the surface, there's little that connects software-as-a-service-company Appian Corporation (NASDAQ: APPN), marijuana grower and seller Green Thumb Industries Inc. (NASDAQOTH: GTBIF), and uranium miner Cameco Corporation (NYSE: CCJ). Except that some of the world's best investors have stepped in to buy their stocks. That makes now a very good time to get to know this trio of companies, before the rest of Wall Street catches up to the smart money. Brian Stoffel (Appian Corporation): Abdiel Capital isn't a household name.