Nvidia’s murky AI future isn’t reflected in its price

Every now and then, a company comes along that is so dominant and is growing so quickly that it feels like the only stock anyone cares about. I’m referring, of course, to Nvidia Corp., the chip giant powering artificial intelligence. Its stock has surged 4,000 per cent over the past five years, making it one of the three most valuable businesses in the world alongside heavyweights Microsoft Corp. and Apple Inc.