As of December 2025 Constellation Energy has a market cap of NZ$182.38 Billion. This makes Constellation Energy the world's 195th 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 16th, 2025 the market cap of Constellation Energy was reported to be: