Vistra Energy Corp.'s stock soared 5.78% during intraday trading, extending a multi-session rally as the broader independent power producer sector strengthened.

The surge was fueled by the accelerating narrative around AI power demand, which is lifting the entire sector. This positive sentiment is reinforced by analyst confidence, with Jefferies recently adjusting Vistra's target price to $190 while maintaining a buy rating.

Additionally, strong institutional conviction was signaled by hedge fund Appaloosa's David Tepper, who more than doubled his position in Vistra during the first quarter, increasing his holdings by approximately 114%. This move highlights growing confidence in Vistra's role within the AI data center power supply chain.