Nvidia and other U.S. tech stocks are holding steadier Tuesday, a day after tumbling on doubts about whether the artificial-intelligence frenzy really needs all the dollars being poured into it. The S&P 500 was 0.

Wall Street has perceived the company to have an almost unbreachable defense against competition with its offerings of high-tech chips. The company’s rapid growth and windfall profit have helped push other technology firms and the Nasdaq Composite Index to record after record,

David Shaw's D.E. Shaw bought 5.9 million shares of Nvidia, increasing its position by 53%. Nvidia is now the largest holding. Meanwhile, D.E. Shaw sold 8.7 million shares of Palantir, reducing its stake by 45%.