Global markets mixed as Nvidia probe hits AI stocks

World shares were mixed Thursday as concerns over Nvidia CEO Jensen Huang's personal conduct weighed on AI-related stocks, with Nvidia shares falling 8.6% in after-hours trading following reports of a board meeting about his affair with a Chinese woman raising U.S. national security concerns. Nvidia's shares had climbed 2.9% on Wednesday before the drop, as the company investigates Huang's admitted relationship with a businesswoman reportedly linked to intelligence and advanced chip transfers to China. European markets rose, with France's CAC 40 up 0.7% and Germany's DAX gaining 1.0%, while Asian markets fell, including Taiwan's Taiex losing 2.6%. Investors also worry about a potential AI industry slowdown amid questions about profitability of massive technology investments. Analysts note customers buy Nvidia's ecosystem, not just its CEO, so revenue impact from Huang's departure is uncertain. U.S. crude rose 0.8% to $87.26 a barrel, and the dollar slipped to 159.64 yen.