Vistra Corp. Stock After Hours: VST Rebounds on PJM Capacity Windfall and a New FERC Data-Center Push — What to Know Before the Market Opens Dec. 19, 2025
Vistra Corp. (NYSE: VST) closed higher on Thursday, Dec. 18, 2025, stabilizing after a sharp, headline-driven stretch for U.S. power producers tied to the AI data-center electricity boom. By the closing bell, VST finished at $166.17, up $6.20 (+3.88%), after