This is the premier operating metric for investors to home in on after the closing bell.Over the past three years, nothing has garnered more attention on Wall Street than the rise of artificial intelligence (AI). Empowering software and systems with AI to make split-second decisions without the need for human oversight is a multitrillion-dollar global opportunity.While a long list of companies has benefited from the evolution of AI, Nvidia (NVDA 1.10%) currently finds itself atop the pedestal. It's added $4 ...