The top 5 insurance groups in the United States ranked by massive annual revenue and market scale are UnitedHealth Group (dominating health insurance), The Cigna Group, Elevance Health, Centene Corporation, and diversified property-casualty giants like State Farm or Berkshire Hathaway. In the specific sector of property and casualty auto insurance, the top 5 leaders consist of State Farm, Progressive, GEICO, Allstate, and USAA.
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