Wall Street drops to one of its worst days since April as AI bubble fears return

Jeffrey Vazquez works on the floor at the New York Stock Exchange on Thursday - (AP)

The U.S. stock market tumbled to one of its worst days since its springtime sell-off on Thursday, as Nvidia and other AI superstar stocks kept dropping on worries their prices shot too high.

Also hurting the market were questions about whether coming cuts to interest rates that Wall Street has been banking on will actually happen.