Why Nvidia’s longer-term future return is not worth the risk — even if it continues to be a phenomenally profitable company. Nvidia Corp.’s market performance over the past six months is a good illustration of the difference between a good company and a good stock.

Is Nvidia a buy now? Let's take a closer look at the bull and bear cases for this top artificial intelligence (AI) stock before coming to a more informed decision. The most obvious bull argument for Nvidia is its unbelievable growth trajectory.