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

Dow futures were pointing higher on Thursday after strong Nvidia Corp. earnings helped rekindle optimism about the artificial-intelligence trade. "Nvidia earnings exceeded estimates, and it fourth quarter outlook is above consensus,

The Dow Jones Industrial Average plunged nearly 500 points, or 1.1%, Tuesday as fears over an AI bubble shook the market and traders fretted that rate cuts from the Federal Reserve aren’t a sure thing.

A typical AI-optimized hyperscale data center uses as much electricity in a year as 100,000 households. The largest now being built are expected to use 20 times that much, the International Energy Agency estimates.

Stocks are mixed with the Dow hitting fresh highs on strength in financial heavyweights like Goldman Sachs and JPMorgan, while AMD bucks the technology downtrend following bold AI growth forecasts. Caroline Woods is a Senior Host at TheStreet, where she covers markets and the economy from the New York Stock Exchange.

Growing concerns about an artificial intelligence bubble have, in large part, caused the stock market’s recent bout of volatility. So the AI industry will face an enormous test when Nvidia, the world’s most valuable company and backbone of the AI boom,

US stock market futures fell today as the S&P 500 extended a three-day slide. Nvidia and Oracle dropped again as investors questioned high AI valuations and rising data-center debt. Dow futures slipped 140 points or 0.

Wall Street observed continued downward momentum on Tuesday as selling pressure mounted with traders still cautious on the AI trade and more convinced the Fed will hold rates steady next month. Leading the way lower was the tech focused Nasdaq Composite (COMP:IND) as it fell 2%.