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1. UnitedHealth Group (USA)
- Type: Health Insurance & Managed Care
- Revenue: ~$370 billion
- Market Cap: ~$500 billion+
- Details: Largest health insurer in the U.S. via UnitedHealthcare. Strong presence in healthcare services via Optum.
2. Allianz SE (Germany)
- Type: Multi-line Insurance
- Revenue: ~$150 billion
- Assets: ~$1.1 trillion
- Details: One of the world’s biggest insurers and asset managers. Operates in 70+ countries with strong life, health, and P&C insurance.
3. Ping An Insurance (China)
- Type: Life, Health, and P&C
- Revenue: ~$200 billion
- Assets: ~$1.4 trillion
- Details: Largest insurer in China. Diversified into technology and banking. Known for tech-driven insurance models.
4. AXA (France)
- Type: Multi-line Insurance
- Revenue: ~$120 billion
- Assets: ~$1 trillion
- Details: Global leader in life, health, and property & casualty insurance. Operates in 60+ countries.
5. China Life Insurance (China)
- Type: Life Insurance
- Revenue: ~$110 billion
- Assets: ~$580 billion
- Details: Largest state-owned life insurer in China. Enormous customer base and agent network.
6. Anthem (now Elevance Health, USA)
- Type: Health Insurance
- Revenue: ~$170 billion
- Details: Major U.S. health benefits provider, operates Blue Cross/Blue Shield plans in multiple states.
7. Kaiser Permanente (USA)
- Type: Health Maintenance Organization (HMO)
- Revenue: ~$95 billion
- Details: Integrated care consortium serving millions in the U.S. Unique combination of insurance and healthcare delivery.
8. Prudential Financial (USA)
- Type: Life Insurance & Financial Services
- Revenue: ~$70 billion
- Assets: ~$1.4 trillion AUM
- Details: Strong life insurance, annuities, retirement, and asset management business.
9. Nippon Life (Japan)
- Type: Life Insurance
- Revenue: ~$65 billion
- Assets: ~$700 billion
- Details: One of Japan’s oldest and largest mutual life insurers. Primarily domestic but expanding globally.
10. Berkshire Hathaway (USA) – GEICO Division
- Type: P&C (via GEICO) & Reinsurance (via Gen Re)
- Insurance Revenue: ~$75 billion+
- Details: While Berkshire is a conglomerate, its insurance operations are massive. GEICO is a top U.S. auto insurer.
11. MetLife (USA)
- Type: Life, Health, Employee Benefits
- Revenue: ~$70 billion
- Assets: ~$700 billion
- Details: One of the world’s largest providers of insurance, annuities, and employee benefit programs.
12. Zurich Insurance Group (Switzerland)
- Type: General & Life Insurance
- Revenue: ~$70 billion
- Details: Strong in Europe and North America. Offers personal, commercial, and corporate insurance.
13. Prudential plc (UK)
- Type: Life and Health Insurance
- Revenue: ~$30 billion
- Details: Operates mainly in Asia and Africa. Not to be confused with the U.S.-based Prudential Financial.
14. AIA Group (Hong Kong)
- Type: Life and Health Insurance
- Revenue: ~$40 billion
- Details: One of the largest publicly listed life insurance groups in Asia-Pacific, formerly part of AIG.
15. AIG (American International Group, USA)
- Type: P&C, Life, Retirement
- Revenue: ~$55 billion
- Details: Global operations, strong in commercial insurance. Known for its restructuring post-2008 crisis.
16. Tokio Marine Holdings (Japan)
- Type: P&C Insurance
- Revenue: ~$50 billion
- Details: Japan’s largest P&C insurer, with growing global presence through acquisitions (e.g., HCC, Delphi).
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