AP News Summary at 3:54 a.m. EST

Nvidia shares and those of rivals Broadcom, Intel and AMD rose after CEO Jensen Huang’s resignation, as investors anticipated customers might diversify chip suppliers. The departure has raised questions about the outlook for the AI industry. Separately, Microsoft is working to restore services after a global outage affected users, companies and some government operations, while officials in several countries reported disruptions and the company said there was no sign of malicious activity.