As of December 2025 FirstEnergy has a market cap of โน2.338 Trillion. This makes FirstEnergy the world's 895th 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 15th, 2025 the market cap of FirstEnergy was reported to be: