Top 10 Health Insurance Groups By Direct Premiums Written, 2017

($000)

Rank Group/company Direct premiums written (1) Market share
1 UnitedHealth Group Inc. $86,431,430 12.9%
2 Anthem Inc. 65,696,295 9.8
3 Humana Inc. 53,224,860 7.9
4 HealthCare Service Corp.  34,304,533 5.1
5 Centene Corp. 28,260,282 4.2
6 Aetna Inc. 20,525,502 3.1
7 Kaiser Foundation Health Plan Inc. 17,406,943 2.6
8 Independence Health Group Inc. 17,014,038 2.5
9 Molina Healthcare Inc. 16,665,219 2.5
10 GuideWell Mutual Holding Corp. 15,253,562 2.3
(1) Based on health insurer annual statement data. Excludes health insurance data from the property/casualty and life/health annual statements. Excludes U.S. territories. Source: NAIC data, sourced from S&P Global Market Intelligence, Insurance Information Institute.