Nvidia still has plenty of room to run.Nvidia (NVDA 0.43%) has been one of the top stocks to own since about 2023. It has been on an incredible run, taking it from a $350 billion company to the world's largest, with a value of approximately$4.1 trillion at the time of writing. With a run-up like that, investors would be forgiven if they assumed that there wasn't any upside left. However, the actions from some of the world's smartest investors say otherwise.Two billionaire hedge fund managers, Daniel Loeb o ...