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Best's Rankings
Top 25 U.S. Ocean Marine Writers — 2021 Edition

The insurers were ranked by 2020 direct premiums written.
  • December 2021
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($ Thousands)

2020
Rank
2019
Rank
Company / Group AMB# 2020
Direct
Premiums
Written
% Change in
Premiums
Market Share (%) Adjusted Loss Ratios % of
Company
Premiums
2020 2019 2018 2020 2019 2018
1 1 Amer Intl Group 018540 $626,517 4.2 15.0 15.2 16.1 37.4 29.6 26.1 4.6
2 2 Berkshire Hathaway Ins 000811 354,030 11.2 8.5 8.1 8.3 81.5 68.3 79.4 0.8
3 3 Travelers Group 018674 294,127 8.6 7.1 6.9 7.1 50.4 54.3 40.0 1.0
4 4 Chubb INA Group 018498 265,605 -0.7 6.4 6.8 5.8 20.3 36.2 29.3 1.1
5 6 Tokio Marine US PC Group 018733 255,358 27.1 6.1 5.1 4.0 62.4 56.0 40.6 2.8
6 5 Starr Intl Group 018756 255,182 10.0 6.1 5.9 5.4 78.7 91.7 108.8 6.7
7 7 Hartford Ins Group 000048 170,221 -6.2 4.1 4.6 5.3 93.9 86.3 47.2 1.4
8 12 Great Amer P & C Ins Group 004835 153,234 29.8 3.7 3.0 3.2 48.6 54.5 55.9 2.3
9 9 CNA Ins Cos 018313 150,142 8.9 3.6 3.5 3.6 60.2 59.9 14.8 1.3
10 11 Intact US Ins Group 018458 141,735 11.4 3.4 3.2 3.5 59.5 45.4 65.1 10.4
11 15 Liberty Mutual Ins Cos 000060 132,962 21.2 3.2 2.8 2.7 56.7 66.3 49.6 0.4
12 10 Markel Corp Group 018468 125,147 -6.9 3.0 3.4 3.6 40.1 60.1 65.6 2.1
13 8 Allianz US PC Ins Companies 018429 105,485 -37.5 2.5 4.3 4.8 75.3 93.4 67.2 2.1
14 14 XL Reins America Group 018557 99,453 -10.5 2.4 2.8 3.7 71.9 72.2 78.6 1.4
15 16 Zurich Ins US PC Group 018549 99,364 8.5 2.4 2.3 2.3 47.9 57.4 66.0 0.7
16 13 Amer Steamship Owners Mut P & I Assn 000161 92,445 -20.0 2.2 2.9 2.4 49.7 48.5 46.9 100.0
17 17 Sompo Hldgs US Group 018878 73,160 1.1 1.8 1.8 1.9 59.1 66.8 114.0 1.4
18 26 Ascot Ins U.S. Group 018915 65,730 113.6 1.6 0.8 0.0 57.8 39.7 0.0 25.9
19 18 Farmers Ins Group 000032 61,056 5.9 1.5 1.5 1.6 69.2 72.1 79.0 0.3
20 19 Hanover Ins Group Prop & Cas Cos 004861 53,102 12.2 1.3 1.2 1.4 32.7 31.4 48.3 1.0
21 37 Nationwide Group 005987 51,260 374.1 1.2 0.3 0.4 77.0 68.2 81.6 0.3
22 22 RLI Group 003883 42,395 6.4 1.0 1.0 0.9 44.1 53.9 57.9 3.8
23 30 Argo Group 004019 41,946 52.0 1.0 0.7 0.5 38.2 46.4 47.3 2.1
24 20 HDI/Talanx US PC Group 018907 41,794 -8.2 1.0 1.2 1.3 24.6 85.2 21.4 6.2
25 25 ProSight Specialty Group 000419 41,225 9.8 1.0 1.0 1.0 28.8 37.8 72.2 5.0
Top 25 Writers $3,792,675 5.2 90.9 91.4 92.7 55.3 57.4 51.7 1.3
Total U.S. P/C Industry $4,171,853 5.8 100.0 100.0 100.0 55.0 58.4 52.6 0.6

Note: Data for some companies in this report has been received from the NAIC.

Reflects Grand Total (includes Canada and U.S. Territories).

Source: BestLink logo — State/Line (P/C Lines) - P/C, US; data as of: Oct. 1, 2021



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