TOP TEN U.S.-BASED SURPLUS LINES INSURANCE COMPANIES BY NONADMITTED DIRECT PREMIUMS WRITTEN, 2011
Rank Company (parent) Nonadmitted direct
premiums written
1 Lexington Insurance Co. (Chartis Inc.) $4,584,874,510 (1)
2 Scottsdale Insurance Co. (Nationwide Mutual Insurance Co.) 1,087,239,649 (1)
3 Steadfast Insurance Co. (Zurich Insurance Co. Ltd.) 946,251,084 (1)
4 Chartis Specialty Insurance Co. (Chartis Inc.) 798,434,908
5 Columbia Casualty Co. (CNA Financial Corp.) 750,476,544
6 Illinois Union Insurance Co. (Ace Ltd.) 543,205,080
7 Landmark American Insurance Co. (Alleghany Corp.) 533,173,503
8 Nautilus Insurance Co. (W.R. Berkley Corp.) 430,531,252
9 Westchester Surplus Lines Insurance Co. (Ace Ltd.) 417,637,980
10 Arch Specialty Insurance Co. (Arch Capital Group Ltd.) 412,775,805

(1) Reported on a pooling basis.

Source: Business Insurance, October 8, 2012.