Vistra (VST) is up about 5% as the market continues to re-price U.S. power generators with scarce, always-on generation that can support AI and data-center load growth. Vistra’s nuclear portfolio has become a focal point after it signed 20-year power purchase agreements to supply more than 2,600 MW of zero-carbon nuclear energy tied to Meta’s regional needs, a structure investors view as extending cash-flow visibility and reducing merchant volatility. (investor.vistracorp.com)

The bid into Vistra fits a broader theme: accelerating data-center electricity demand and tightening grid constraints are pushing large buyers toward long-term offtake agreements and firm generation, including nuclear. That backdrop has helped keep attention on companies with sizeable generation fleets and contract pathways to serve large loads. (iea.org)

Near-term, traders are positioning ahead of Vistra’s next earnings report, which market calendars peg for Thursday, May 7, 2026, when investors will look for updates on guidance, hedging, and execution timelines around its nuclear uprates and broader growth plan. Separately, any regulatory or market-design shifts in PJM that affect how capacity is allocated to large-load arrangements remain a key swing factor for sentiment. (tradingeconomics.com)