Nvidia (NVDA -0.02%) has been one of the best stocks to own for some time, and it was right under many investors' noses for a while. Nvidia makes graphics processing units (GPUs), which were originally intended for gaming graphics but quickly found many more use cases.Most of Nvidia's rise over the past decade has been tied to this alternative use, with the largest boost coming from Nvidia GPUs being the best option for training artificial intelligence (AI) models. So, how much money has Nvidia made investo ...