As of October 2026 Constellation Energy has a market cap of ยฃ79.80 Billion. This makes Constellation Energy the world's 215th 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 Oct 9th, 2026 the market cap of Constellation Energy was reported to be: