US Stock Market Highlights: Dow Jones ends 600 pts lower as AI doubts persist ahead of Fed rate meet

US stocks ended lower on Friday, with the Dow Jones Industrial Average falling by over 600 points. The decline was driven by persistent doubts over the artificial intelligence trade, which weighed on investor sentiment. The S&P 500 and Nasdaq also finished lower, as investors awaited major earnings reports from Alphabet, Microsoft, and Amazon, as well as next week's Federal Reserve meeting.