The best-performing stock on the S&P 500 is a 'unicorn' that joined the index less than a month ago and is beating Nvidia – Fortune

Demand to power artificial intelligence engines has sent shares of Vistra Inc., one of the largest U.S. power producers, soaring faster than shares of Wall Street darling Nvidia Inc. Dear Investors, include Daniel Loeb, the billionaire founder of Third Point LLC, has been buying Vistra shares, betting that a surge in demand driven in part […]