Fortune ranked UnitedHealth Group the top health insurer in its annual list of "The World's Most Admired Companies" for 2018.
Fortune produced the list in collaboration with Korn Ferry. The partners began with approximately 1,500 candidate companies, including the 1,000 largest U.S. companies ranked by revenue, along with non-U.S. companies in Fortune's Global 500 database with revenues of $10 billion or more. They then narrowed the pool of companies down to the highest-revenue companies in each industry for a total of 680 companies in 29 countries. The top-rated companies were selected from the pool of 680.
To review Fortune's methodology, click here.
Five health insurers made the list this year. Here is how they stacked up within the health insurance industry.
1. UnitedHealth Group (Minnetonka, Minn.)
2. Humana (Louisville, Ky.)
3. Cigna (Bloomfield, Conn.)
4. Aetna (Hartford, Conn.)
5. WellCare Health Plans (Tampa, Fla.)
To view the 33 healthcare companies making Fortune's "World's Most Admired" list for 2018, click here.