Eight health insurers made Fortune's 2021 list of the top 500 highest-earning U.S. companies. Here's how they ranked based on total revenue for the fiscal year ended Dec. 31, 2020:
1. CVS Health (Aetna): $268.7 billion
2. UnitedHealth Group: $257.1 billion
3. Cigna: $160.4 billion
4. Anthem: $121.9 billion
5. Centene: $111.1 billion
6. Humana: $77.2 billion
7. Molina Healthcare: $19.4 billion
8. Magellan Health: $7.5 billion