Amgen Inc. is an American multinational biopharmaceutical company headquartered in Thousand Oaks, California. As one of the world's largest independent biotechnology companies, Amgen has approximately 24,000 staff in total as of 2022. The name "AMGen" is a portmanteau of the company's original name, Applied Molecular Genetics, which became the official name of the company in 1983. The company is listed on the Nasdaq Global Select Market under the ticker symbol "AMGN", as well as a component of the Nasdaq-100, the Dow Jones Industrial Average, and the S&P 100 and 500 indices. Wikipedia