Vistra Corp (VST) Stock in Focus on Dec. 18, 2025: PJM Capacity Auction Windfall, AI-Demand Volatility, and Fresh Wall Street Forecasts
Dec. 18, 2025 — Vistra Corp. (NYSE: VST) is back in the spotlight as investors try to reconcile two powerful (and sometimes contradictory) forces moving power-generator stocks right now: record-high capacity payments in the PJM power market and shifting sentiment around AI-driven electricity demand. The result has been whiplash. Vistra closed Dec. 17 at $159.97, down 7.77%, before showing a pre-market bounce to about $163.50 early Thursday. StockAnalysis Why does this matter? Because the news cycle around Vistra has become a live-action debate over a single question: Are US grids entering a multiyear “scarcity era” where reliable generation is worth