Investors grow concerned that AI expenses and a looming price war in cloud services could blow up its profits.

Microsoft shares dropped 6% after issuing weak current-quarter guidance. The software giant topped Wall Street's fiscal second-quarter estimates, posting earnings of $3.23 per share on $69.63 billion in revenue.

Microsoft is a key backer of OpenAI and it has committed to spending $80 billion on AI infrastructure this year in order to expand its global network of high-powered data centers to meet demand for the specialized chips required to train and run AI models.

Certain Wall Street analysts expect Nvidia and Microsoft to achieve market values of $4 trillion in 2025, something no publicly traded company has accomplished. Nvidia is the market leader in data center graphics processing units,

World markets mostly rose on Friday following gains on Wall Street driven by Tesla, IBM and Meta Platforms after strong profit reports. European markets opened higher after the European Central Bank cut its key interest rate to by a quarter-point to 2.

Tesla, IBM and Meta Platforms helped lead most U.S. stocks higher following a rush of profit reports from some of the country’s most influential companies. The S&P 500 climbed 0.5%