As of December 2025 Constellation Energy has a market cap of C$154.75 Billion. This makes Constellation Energy the world's 181th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Dec 17th, 2025 the market cap of Constellation Energy was reported to be: