Stock market today: Nasdaq falls on artificial intelligence fears as Palantir pops and Walmart hits $1 trillion
The S&P 500 fell 1.3% and the Nasdaq dropped nearly 2% Tuesday, erasing early gains, while the Dow slipped 0.9%. Palantir shares rose after an upbeat revenue forecast, but Microsoft and other major tech stocks declined. A partial U.S. government shutdown delayed key economic reports. Investors await Alphabet and Amazon earnings later this week.