UNH

UnitedHealth Group operates a dual‑segment model that combines UnitedHealthcare, a provider of commercial, Medicare, Medicaid and other health‑benefit plans, with Optum, which delivers care services, pharmacy‑benefit management, data analytics, and health‑technology solutions. The company is positioned in the managed‑care and broader healthcare‑services sector, covering insurance, provider networks, pharmacy benefits and health‑IT. Its integrated structure makes UnitedHealth the largest U.S. health‑insurance carrier and one of the leading pharmacy‑benefit managers, giving it a dominant market presence across multiple points of the healthcare value chain.