Constellation Energy (CEG) Stock: What to Know Before the U.S. Market Opens on Dec. 15, 2025
Constellation Energy Corporation (NASDAQ: CEG) heads into Monday’s session with two powerful narratives colliding: a “nuclear renaissance” story tied to AI-era power demand, and a high-stakes acquisition that could reshape the U.S. generation landscape—along with the regulatory strings attached. By Friday’s close (Dec. 12), CEG had just delivered a reminder that even market darlings can swing hard: shares finished at $351.98, after trading as high as $380.10 and as low as $351.31 in a volatile session. Below is what investors and traders will be watching ahead of the opening bell on Monday, Dec. 15, 2025. CEG stock snapshot heading into