World shares are mixed as Nvidia's troubles weigh on AI stocks

TOKYO (AP) — World shares were mixed on Thursday as concerns over leadership at chipmaker Nvidia weighed on artificial intelligence -related stocks.In after-hours trading, Nvidia’s shares fell 8.6% after reports said Nvidia’s board was meeting late Wednesday to discuss the situation surrounding its CEO, Jensen Huang, whose affair with a Chinese woman has raised national security concerns in the U.S.Nvidia 's shares climbed 2.9% on Wednesday. Its shares have fallen after the company said it was investigating Huang, who has admitted to a relationship with a businesswoman who reportedly fed intelligence and advanced chips to China.The future for the S&P 500 slipped 0.4%, while that for the Dow Jones Industrial Average was nearly unchanged.In early European trading, France's CAC 40 added 0.7% and the German DAX rose 1.0% to 26,939.92. Britain's FTSE 100 jumped 0.3% to 10,868.98.In Asian trading, Japan's benchmark Nikkei 225 shed 0.7% to 60,819.36.In South Korea, the Kospi gave up early gai