Aetna is a healthcare giant, providing health insurance and related services to millions of people in the United States. It is one of the largest health insurance companies in the country, offering a wide range of plans for individuals, families, and businesses. AETNA has been in business since 1853 and is headquartered in Hartford, Connecticut. It is a publicly traded company and is part of the S&P 500 index. AETNA provides a variety of services, including medical, dental, vision, pharmacy, and behavioral health coverage. It also offers life and disability insurance, as well as Medicare and Medicaid plans.