US stocks couldn't hold opening gains amid ongoing inflation and economic worries. Nvidia earnings and inflation data are due later this week.

Nvidia stock was slightly falling on Monday, as investors geared up for a crucial earnings report that could help decide how much longer the artificial-intelligence-powered market rally could last. Shares in the chip maker were down 0.

Nvidia is due to report this week, with expectations high around the company's results, having become known as the stock market's AI darling.

U.S. equity futures moved higher in early Monday trading, helped by a pullback in the dollar and steady Treasury bond yields, as investors looked to claw back some of last week's sharp declines heading into a key week for tech stocks on Wall Street.