A BRUTAL SELL - OFF FOR AI STOCKS SENDS WALL STREET REELING ; S & P 500 SEES WORST DAY SINCE 2025 LIBERATION DAY TARIFFS

What happened: A sell-off led by AI data center stocks swept Wall Street Thursday, with the S&P 500 posting its worst day since April 2025. Key numbers: S&P 500 fell 4.4% to 7,353.73. Dow sank 1,833 points, or 3.4%, to 51,523.06. Nasdaq tumbled 5.5% to 24,315.00 and is 11.9% below its record. Why it matters: Worries that AI data center construction may slow on higher borrowing costs, plus Democratic midterm wins raising the chance of construction pauses, hit the market's most influential stocks. A 1% move in Nvidia affects the S&P 500 more than nearly any other U.S. stock. Coverage: 4 outlets in 24h

A sell-off led by AI data center stocks swept Wall Street Thursday, with the S&P 500 posting its worst day since April 2025.

Worries that AI data center construction may slow on higher borrowing costs, plus Democratic midterm wins raising the chance of construction pauses, hit the market's most influential stocks. A 1% move in Nvidia affects the S&P 500 more than nearly any other U.S. stock.