Constellation Energy (CEG) Stock Today: Calpine Deal Nears Close as Nuclear Data‑Center Contracts Shape 2026 Outlook (Dec. 15, 2025)
Constellation Energy Corporation (NASDAQ: CEG) is back in focus on December 15, 2025 as investors digest a busy stretch of deal news, federal support for nuclear restarts, and continued momentum behind “24/7 carbon‑free” power contracts tied to the AI data‑center