World Top Uranium Companies List by Market Cap as on Sep 1st, 2021

National Atomic Company Kazatomprom is the national operator of the Republic of Kazakhstan for the import and export of uranium, rare metals, nuclear fuel for nuclear power plants company. It involved in the front end of the nuclear fuel cycle from geological exploration, uranium mining and production of nuclear fuel cycle through to scientific research and development of patented technologies. The headquarters is in Kazakhstan.

Cameco Corporation is a Nuclear Energy and Mining company. It is a leading supplier of uranium refining, conversion and fuel manufacturing services. The company produce more than 53 million pounds of uranium concentrates annually backed by 461 million pounds of proven and probable mineral reserves. The headquarters is in Canada.

Paladin Energy Limited is a significant uranium miner and exploration company. The headquarters is in Australia.

Denison is a uranium exploration and development company with headquarters in Canada.
 

Energy & Fuels is the leading U.S. producer of uranium, the fuel for carbon and emission free nuclear energy company. The company annual revenue is 1.6 million USD and 94 employees as on 2020. The headquarters is in USA.