ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Boiler & Machinery

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.01% $2,470.00 $1,869.00 $0.00 $241.00 12.89%
Missouri Total 100.00% $20,374,249 $20,930,936 $2,859,093 $1,756,010 8.39%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Burglary & Theft

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.01% $156.00 $79.00 $16,417.00 $16,427.00 20,793.67%
Missouri Total 100.00% $3,086,430 $2,879,888 $1,213,949 $1,259,157 43.72%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Commercial Auto Collision

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.33% $313,357.00 $708,120.00 $405,445.00 $361,702.00 51.08%
Missouri Total 100.00% $94,966,273 $95,533,021 $47,545,217 $48,272,677 50.53%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Commercial Auto Comprehensive

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.13% $83,298.00 $188,234.00 $107,777.00 $96,149.00 51.08%
Missouri Total 100.00% $63,177,401 $64,005,865 $24,175,823 $25,747,008 40.23%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Commercial Auto Liability Bodily Injury

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.46% $1,222,332.00 $1,117,906.00 $21,387.00 $427,417.00 38.23%
Missouri Total 100.00% $268,161,058 $271,980,407 $147,975,880 $159,836,768 58.77%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Commercial Fire & Allied Lines

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 1.13% $1,532,615.00 $1,069,636.00 $28,558.00 $179,267.00 16.76%
Missouri Total 100.00% $135,755,240 $131,372,826 $41,125,322 $23,826,255 18.14%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Commercial Multi-Peril

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.10% $635,237.00 $466,918.00 $16,917.00 $249,626.00 53.46%
Missouri Total 100.00% $622,649,146 $614,760,000 $249,031,666 $248,131,677 40.36%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Direct Workers Compensation

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.42% $4,224,165.00 $4,305,465.00 $251,264.00 $1,848,782.00 42.94%
Missouri Total 100.00% $1,008,002,549 $968,998,320 $461,730,864 $594,472,086 61.35%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Earthquake

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.39% $287,549.00 $164,011.00 $0.00 $26,882.00 16.39%
Missouri Total 100.00% $72,917,424 $71,294,758 $251,686 $-954,977 -1.34%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Fidelity

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.04% $9,223.00 $4,921.00 $0.00 $971.00 19.73%
Missouri Total 100.00% $23,042,366 $22,631,716 $5,944,543 $13,472,018 59.53%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Accident & Health

Group Stop Loss

Market_Share Number of Insureds Direct Premium Written Direct Premium Earned Dividends Paid Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.11% 54 $133,440.00 $133,440.00 $0.00 $38,511.00 $67,564.00 50.63%
Missouri Total 100.00% 604,305 $122,060,010 $121,995,529 $0 $85,468,808 $89,851,650 73.65%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Accident & Health

Individual Limited Benefit

Market_Share Number of Insureds Direct Premium Written Direct Premium Earned Dividends Paid Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 1.80% 680 $542,270.00 $547,296.00 $0.00 $383,184.00 $513,067.00 93.75%
Missouri Total 100.00% 174,117 $30,162,088 $30,152,895 $7,059 $14,329,780 $14,855,245 49.27%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Inland Marine (Incl Auto Cargo)

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.17% $350,162.00 $353,270.00 $132,734.00 $116,295.00 32.92%
Missouri Total 100.00% $201,917,577 $199,964,322 $75,938,842 $90,734,243 45.38%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Ocean Marine

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.00% $391.00 $169.00 $0.00 $22.00 13.02%
Missouri Total 100.00% $38,950,690 $38,096,504 $13,143,101 $10,055,891 26.40%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Other Liability - Bodily Injury & Property Damage

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 1.14% $6,480,983.00 $5,921,511.00 $296,614.00 $2,467,139.00 41.66%
Missouri Total 100.00% $568,337,066 $603,483,554 $334,235,058 $378,856,753 62.78%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Private Passenger Auto Liability Bodily Injury

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.00% $0.00 $0.00 $0.00 $-6,000.00 0.00%
Missouri Total 100.00% $719,748,706 $719,174,030 $438,738,616 $475,112,521 66.06%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Products Liability

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.05% $22,806.00 $21,900.00 $0.00 $9,513.00 43.44%
Missouri Total 100.00% $45,726,733 $48,846,364 $23,180,412 $4,761,872 9.75%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Surety

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.36% $240,862.00 $243,177.00 $0.00 $36,747.00 15.11%
Missouri Total 100.00% $67,003,050 $65,353,672 $19,740,699 $20,079,091 30.72%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Accident & Health

Total Accident & Health

Market_Share Number of Insureds Direct Premium Written Direct Premium Earned Dividends Paid Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.01% 734 $675,710.00 $680,736.00 $0.00 $421,695.00 $580,631.00 85.29%
Missouri Total 100.00% 19,163,590 $4,740,626,481 $4,736,978,690 $1,646,924 $3,444,966,965 $3,686,629,220 77.83%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Total Commercial Automobile

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.28% $1,618,987.00 $2,014,260.00 $534,609.00 $885,268.00 43.95%
Missouri Total 100.00% $588,121,986 $589,707,629 $281,411,163 $302,319,859 51.27%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Total Fire & Allied Lines

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.56% $1,532,615.00 $1,069,636.00 $28,558.00 $179,267.00 16.76%
Missouri Total 100.00% $271,373,726 $265,149,404 $100,666,288 $86,534,872 32.64%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Accident & Health

Total Group Accident & Health

Market_Share Number of Insureds Direct Premium Written Direct Premium Earned Dividends Paid Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.00% 54 $133,440.00 $133,440.00 $0.00 $38,511.00 $67,564.00 50.63%
Missouri Total 100.00% 17,483,371 $3,695,172,901 $3,705,281,883 $57,862 $2,790,711,236 $3,011,485,171 81.28%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Accident & Health

Total Individual Accident & Health

Market_Share Number of Insureds Direct Premium Written Direct Premium Earned Dividends Paid Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.05% 680 $542,270.00 $547,296.00 $0.00 $383,184.00 $513,067.00 93.75%
Missouri Total 100.00% 1,680,219 $1,045,453,580 $1,031,696,807 $1,589,062 $654,255,729 $675,144,049 65.44%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Total Private Passenger Automobile

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.00% $0.00 $0.00 $0.00 $-6,000.00 0.00%
Missouri Total 100.00% $2,773,452,710 $2,784,301,481 $1,597,094,439 $1,623,488,230 58.31%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

Total Property & Casualty

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.19% $15,230,119.00 $14,916,635.00 $1,460,192.00 $5,921,634.00 39.70%
Missouri Total 100.00% $8,218,883,685 $8,161,366,248 $4,027,395,001 $4,348,337,255 53.28%



ARCH INSURANCE COMPANY

2005 Supplemental Data for

Property & Casualty

VSI/Collateral Protection

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total -2.40% $-175,487.00 $349,449.00 $183,079.00 $90,454.00 25.88%
Missouri Total 100.00% $7,303,370 $5,701,419 $3,354,564 $3,867,840 67.84%



Additional data is available for this company for the following year(s):