AI chipmaker Nvidia surpasses Apple, Microsoft to become world's most valuable company

AI chipmaker Nvidia surged past Apple and Microsoft to become the most valuable company in the world – the latest milestone as Wall Street investors chase the booming artificial-intelligence sector.Shares of California-based Nvidia, whose chips are in hot demand by industry leaders ranging from Microsoft-backed OpenAI to billionaire Elon Musk’s Tesla and xAI, rose more than 3% in midday trading on Tuesday. Nvidia’s stock has swelled by more than 180% since the start of the year.The latest uptick pushed the ...