[Chart courtesy of MarketWatch.com][Chart courtesy of MarketWatch.com]Moving the marketThe S&P 500 and Nasdaq stumbled in early trading, weighed down by weak tech performance after the recent surge.By the close, the S&P 500 clawed back to green, while the Dow powered to a fresh record high.The Nasdaq wasn’t so lucky, finishing with a moderate loss as big names in artificial intelligence—like Nvidia, CoreWeave, Micron Technology, Oracle, and Palantir Technologies—sold off amid growing worries about peaked va ...