OpenAI could now be the world's most valuable startup, ahead of Elon Musk's SpaceX and TikTok parent company ByteDance, after a secondary stock sale designed to retain employees at the ChatGPT maker. Current and former OpenAI employees sold $6.6 billion in shares to a group of investors, pushing the privately held artificial intelligence company's valuation to $500 billion, according to a source with knowledge of the deal who was not authorized to discuss it publicly. The valuation reflects high expectations for the future of AI technology and continues OpenAI's remarkable trajectory from its start as a nonprofit research lab in 2015.

U.S. Commerce Secretary Howard Lutnick on Tuesday confirmed the U.S. government is vying for a 10% stake in Silicon Valley pioneer Intel in an unusual deal that would deepen the Trump administration's financial ties with major computer chip manufacturers and punctuate a dramatic about-face from the president's recent push to oust the company's CEO. The ambitions that Lutnick confirmed in a televised interview with CNBC came the day after various news outlets reported on the negotiations between the Trump administration and Intel. The talks come on the heels of a $2 billion investment that Japanese technology giant SoftBank Group announced late Monday.