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Top 10 Writers of Ocean Marine Insurance By Direct Premiums Written, 2019

($000)

Rank Group/company Direct premiums written (1) Market share (2)
1 American International Group (AIG) $600,325 15.4%
2 Berkshire Hathaway Inc. 318,336 8.1
3 Travelers Companies Inc. 270,889 6.9
4 Chubb Ltd. 265,993 6.8
5 Starr International Co. 231,943 5.9
6 Tokio Marine Group 200,827 5.1
7 Hartford Financial Services 181,520 4.6
8 Allianz Group 168,753 4.3
9 CNA Financial Corp. 137,906 3.5
10 Markel Corp. 134,458 3.4
(1) Before reinsurance transactions, includes state funds. (2) Based on U.S. total, includes territories. Source: NAIC data, sourced from S&P Global Market Intelligence, Insurance Information Institute.