Thermo Fisher Scientific Inc., also known as Thermo Fisher, is an American technology company based in Waltham, Massachusetts. It describes itself as "the world's largest supplier of scientific applications."
As of December 2025 Thermo Fisher Scientific has a market cap of โน19.009 Trillion. This makes Thermo Fisher Scientific the world's 76th 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 8th, 2025 the market cap of Thermo Fisher Scientific was reported to be: