On May 21, Vistra Energy rose 3.09% in regular trading, trading at $148.54/share, with trading volume of $172 million. The stock extended gains following a 5.11% rally in the prior session as AI power demand catalysts continued to drive momentum.

On the news front, Jefferies adjusted its price target for Vistra to $190 while maintaining a Buy rating. Wall Street analysts polled by FactSet assign a mean price target of $233.19, implying significant upside from current levels. Additionally, SEC filings revealed that legendary hedge fund manager David Tepper's Appaloosa Management more than doubled its Vistra position in Q1, increasing holdings from 945,000 shares to over 2.02 million shares — a roughly 114% increase — signaling strong institutional conviction in the AI data center power infrastructure thesis.

The broader AI power sector remained buoyant, with peer Talen Energy gaining 2.96% and TransAlta rising 1.54%. Industry data from the IEA projects global data center electricity consumption to nearly double from 485 TWh to approximately 950 TWh by 2030, underpinning the structural demand narrative for independent power producers like Vistra.

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