As of December 2025 First Solar has a market cap of ยฃ20.75 Billion. This makes First Solar the world's 843th 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 5th, 2025 the market cap of First Solar was reported to be: