Aetna, Inc. engages in the provision of traditional, voluntary, and consumer-directed health insurance products and related services. It operates through the following segments: Health Care, Group Insurance, and Large Case Pensions. The Health Care segment consists of medical, pharmacy benefit management services, dental, behavioral health, and vision plans offered on insured and employer-funded basis. The Group Insurance segment includes group life insurance and group disability products. The Large Case Pensions segment manages retirement products for tax-qualified pension plans. The company was founded by Eliphalet Adams Bulkeley in 1853 and is headquartered in Hartford, CT.