TOP TEN U.S.-BASED SURPLUS LINES INSURANCE COMPANIES BY NONADMITTED DIRECT WRITTEN PREMIUMS, 2010
Rank Company (parent) Nonadmitted direct premiums
1 Lexington Insurance Co. (Chartis Inc.) $4,605,795,515 (1)
2 Steadfast Insurance Co. (Zurich Financial Services Group) 1,073,451,439 (1)
3 Scottsdale Insurance Co. (Nationwide Mutual Insurance Co.) 1,004,147,047 (1)
4 Chartis Specialty Insurance Co. (Chartis Inc.) 784,795,135
5 Columbia Casualty Co. (CNA Financial Corp.) 718,064,491
6 Illinois Union Insurance Co. (ACE Ltd.) 532,554,380
7 Landmark American Insurance Co. (Alleghany Corp.) 509,470,668
8 Evanston Insurance Co. (Markel Corp.) 470,571,621
9 Westchester Surplus Lines Insurance Co. (ACE Ltd.) 409,449,256
10 Arch Specialty Insurance Co. (Arch Capital Group Ltd.) 402,861,503

(1) Reported on a pooling basis.

Source: Business Insurance, October 10, 2011.