Below are the world’s largest insurance companies based on market capitalization. Berkshire Hathaway Inc, an American multinational conglomerate, ranks first in the list. Berkshire’s main insurance subsidiaries are GEICO (Government Employees Insurance Company), Berkshire Hathaway Reinsurance Group, and General Re. GEICO is the second largest private passenger auto insurer in the United States. General Re and Berkshire Hathaway Reinsurance are the largest reinsurer companies in the world.

Rank Company Country Market capitalization, US$b (November 10, 2017)
1 Berkshire Hathaway US 453.230
2 Ping An Insurance China 186.688
3 China Life Insurance China 133.140
4 Allianz Germany 103.808
5 AIA Group Hong Kong 95.960
6 AXA France 71.437
7 Chubb ltd Switzerland 70.260
8 Prudential Plc UK 62.889
9 China Pacific Insurance China 56.290
10 American International Group US 55.789
11 Metlife US 54.930
12 Prudential Financial US 46.945
13 Zurich Insurance Group Switzerland 45.885
14 Manulife Financial Canada 41.985
15 Travelers Companies US 37.097
16 Allstate Corp US 35.683
17 Munich Re Germany 35.311
18 Aflac US 32.804
19 Swiss RE Switzerland 32.555
20 PICC Property & Casualty China 31.887
21 Tokio Marine Holdings Japan 31.454
22 Sampo Finland 29.594
23 Progressive Corporation US 29.518
24 Assicurazioni Generali Italy 28.644
25 New China Life Insurance Co China 28.284
27 Great West Lifeco Canada 27.483
26 Aviva UK 26.354
28 Samsung Life Insurance South Korea 24.058
29 Sun Life Financial Canada 23.794
30 Ameriprise Financial US 23.258
31 People's Insurance Co. (Group) of China China 22.784
32 Dai-ichi Life Holdings Japan 22.283
33 Willis Towers Watson United Kingdom 21.334
34 Legal & General Group UK 21.235
35 Cathay Financial Holding Taiwan 20.491
36 Power Financial Canada 20.284
37 Hartford Financial US 19.805
38 Principal Financial Group US 19.653
39 MS&AD Insurance Group Japan 18.979
40 Sompo Holdings Japan 16.734
41 Loews Corporation US 16.667
42 Standard Life UK 16.321
43 Lincoln National Corp US 16.082
44 Fairfax Financial Holdings Canada 15.897
45 CNP Assurances France 15.878
46 Hannover Re Germany 15.400
47 Markel Corporation US 14.773
48 NN Group Netherlands 14.066
49 Suncorp Group Australia 13.944
50 Aegon N.V. Netherlands 12.809
51 Japan Post Insurance Japan 12.771
52 Insurance Australia Group Australia 12.717
53 Arch Capital Group Bermuda 12.479
54 Old Mutual UK 12.381
55 Cincinnati Financial Corp US 12.043