Nvidia reported a 56% increase in second-quarter revenue Wednesday and a 59% rise in net income compared to a year ago. However, sales in its main data center division came in slightly below Wall Street estimates and the stock fell in after-hours trading. Nvidia and other companies benefiting from the boom in artificial intelligence have been a major reason the S&P 500 has set a number of records this year. Their explosion of profits has helped to propel the market despite worries about the U.S. economy being weakened by tariffs and other policies of the Trump administration.

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