Fears that American companies have been overspending on AI, with some already shelling out billions of dollars, have rocked markets over the past two weeks.

Stocks closed markedly lower on Tuesday as fears of a bubble in artificial intelligence technology hammered markets for a fourth consecutive trading day.

The Dow Jones Industrial Average (DJI) fell sharply on Tuesday, declining 0.6% and hitting its lowest level in one month amid ongoing market volatility. The blue-chip index dipped down to 45,913 at one moment,

The Dow Jones Industrial Average closed at a fresh record high Tuesday as investors piled into stocks beyond the hot AI plays

The Dow Jones Industrial Average soared more than 300 points, or nearly 0.7%, Wednesday as investors looked ahead to the end of the record-breaking government shutdown.

Major stock indexes finished mixed Friday, with the Dow Jones Industrial Average declining for a second straight session but registering a weekly gain.

American Express Co., which disclosed an increase in its consumer net write-off rate for October, is topping the list as the biggest loser within the Dow Jones Industrial Average on Monday. Its share price was down by about $16.

Dow, S&P 500, and Nasdaq futures are falling in premarket trading as the stock market turns away from risk assets ahead of key data.

Investors drove the Dow to back-to-back record gains shrugging off concerns about an AI bubble and the lack of economic data tied to the government shutdown.

Doubts about a potential third Federal Reserve rate in December triggered an 800-point drop in the Dow Jones Industrial Average on Thursday.