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Figures in millions USD
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| Company | Country | Gross written premiums (1) | |||
| 2024 | 2023 | 2023-2024 evolution | 2024 shares | ||
| Munich Re | Germany | 41 698 | 41 702 | 0.0% | 10.6% |
| Swiss Re | Switzerland | 36 837 | 36 000 | 2.3% | 9.3% |
| Hannover Re | Germany | 27 476 | 26 991 | 1.8% | 7.0% |
| Berkshire Hathaway | United States | 26 906 | 27 453 | -2.0% | 6.8% |
| Lloyd's | United Kingdom | 23 533 | 22 072 | 6.6% | 6.0% |
| Reinsurance Group of America | United States | 18 492 | 15 758 | 17.3% | 4.7% |
| SCOR | France | 16 796 | 17 572 | -4.4% | 4.3% |
| Great West Lifeco | Canada | 14 747 | 15 390 | -4.2% | 3.7% |
| Everest Re Group | Bermuda | 12 941 | 11 460 | 12.9% | 3.3% |
| Renaissance Re | Bermuda | 11 733 | 8 862 | 32.4% | 3.0% |
| Top 10 | 231 159 | 223 260 | 3.5% | 58.7% | |
| Arch Capital | Bermuda | 11 112 | 9 113 | 21.9% | 2.8% |
| PartnerRe | Bermuda | 9 345 | 9 102 | 2.7% | 2.4% |
| Mapfre Re | Spain | 8 143 | 8 015 | 1.6% | 2.1% |
| China Re | China | 7 656 | 7 789 | -1.7% | 1.9% |
| MS&AD Ins. Group | Japan | 6 836 | 5 777 | 18.3% | 1.7% |
| Chubb Tempest Re | Bermuda | 6 639 | 5 382 | 23.4% | 1.7% |
| Allianz SE Re | Germany | 6 573 | 5 965 | 10.2% | 1.7% |
| Korean Re | South Korea | 5 791 | 6 472 | -10.5% | 1.5% |
| Liberty Mutual | United States | 4 649 | 3 764 | 23.5% | 1.2% |
| Sompo International | Bermuda | 4 532 | 4 195 | 8.0% | 1.1% |
| Top 20 | 302 435 | 288 834 | 4.7% | 76.8% | |
| Top 50 | 367 733 | 348 536 | 5.5% | 93.2% | |
| Top 100 | 392 008 | 372 326 | 5.3% | 99.3% | |
| Rest of tde market (2) | 2 686 | 2 387 | 12.5% | 0.7% | |
| Total world | 394 694 | 374 713 | 5.3% | 100% | |
(1) Under IFRS17: reinsurance revenue for Munich Re, Swiss Re, Hannover Re, SCOR, Great West Life, and China Re Under IFRS4: gross written premiums for other reinsurers in the top 20
(2) 54 companies
Source: Atlas Reinsurance Reports 2026: study conducted by Atlas Magazine, based on data from 154 reinsurers headquartered in Europe, the Americas, Africa, Asia, and the Middle East.
