Michael Dell fell to No. 4 on Forbes’ Real-Time Billionaires list on Monday morning as Dell Technologies shares dropped more than 6% during a broader AI-stock selloff. The decline followed calls from top AI executives to slow development because of mounting safety concerns. Dell has benefited from rising data-center spending, supplying servers, storage and other equipment for AI workloads. The company reported record second-quarter fiscal 2027 revenue of $47 billion on Sept. 1, up 58% from a year earlier, while AI-optimized server revenue doubled to $16.4 billion. Michael Dell owns roughly 40% of Dell Technologies. His wealth gains briefly lifted him to the world’s third-richest person on Sept. 8 and second-richest on Sept. 9, when he passed Google’s Larry Page. Dell’s latest fiscal 2027 forecast calls for $74 billion in AI-optimized server revenue, up from $60 billion and nearly triple the $25 billion generated in the previous fiscal year. He now ranks behind Elon Musk, Larry Page and Jeff Bezos.