ARCH INSURANCE COMPANY

2003 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 0.00% $0.00 $5,691.00 $0.00 $-155.00 -2.72%
Missouri Total 100.00% $22,028,458 $22,133,751 $9,644,069 $5,521,170 24.94%



ARCH INSURANCE COMPANY

2003 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 0.02% $500.00 $8,857.00 $0.00 $-120.00 -1.35%
Missouri Total 100.00% $3,016,412 $2,923,637 $402,912 $433,724 14.84%



ARCH INSURANCE COMPANY

2003 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 0.89% $888,689.00 $666,750.00 $455,034.00 $502,016.00 75.29%
Missouri Total 100.00% $99,999,479 $100,773,243 $48,855,092 $44,874,488 44.53%



ARCH INSURANCE COMPANY

2003 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 0.00% $824.00 $594.00 $0.00 $221.00 37.21%
Missouri Total 100.00% $58,013,348 $57,788,854 $33,980,947 $32,861,398 56.86%



ARCH INSURANCE COMPANY

2003 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 0.02% $51,710.00 $31,822.00 $998.00 $12,516.00 39.33%
Missouri Total 100.00% $249,443,701 $242,948,043 $153,259,759 $190,400,064 78.37%



ARCH INSURANCE COMPANY

2003 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 0.05% $61,278.00 $317,861.00 $118,447.00 $163,834.00 51.54%
Missouri Total 100.00% $116,509,491 $114,986,802 $72,238,481 $54,113,894 47.06%



ARCH INSURANCE COMPANY

2003 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 0.01% $73,771.00 $78,047.00 $4,630.00 $31,947.00 40.93%
Missouri Total 100.00% $573,919,772 $548,985,654 $277,364,391 $312,408,760 56.91%



ARCH INSURANCE COMPANY

2003 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 -0.03% $-296,235.00 $-122,796.00 $47,817.00 $4,685.00 -3.82%
Missouri Total 100.00% $903,170,880 $859,891,451 $453,558,549 $587,932,686 68.37%



ARCH INSURANCE COMPANY

2003 Supplemental Data for

Property & Casualty

Fidelity

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.00% $149.00 $107.00 $0.00 $37.00 34.58%
Missouri Total 100.00% $22,487,041 $21,627,865 $6,726,389 $7,369,217 34.07%



ARCH INSURANCE COMPANY

2003 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 0.18% $333,942.00 $270,458.00 $17,236.00 $72,228.00 26.71%
Missouri Total 100.00% $182,338,531 $187,165,278 $71,297,214 $69,123,743 36.93%



ARCH INSURANCE COMPANY

2003 Supplemental Data for

Property & Casualty

Lawyers Malpractice

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.37% $47,671.00 $23,892.00 $0.00 $11,428.00 47.83%
Missouri Total 100.00% $13,057,678 $11,671,741 $3,721,625 $3,402,619 29.15%



ARCH INSURANCE COMPANY

2003 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 0.02% $101,822.00 $275,153.00 $22,597.00 $153,637.00 55.84%
Missouri Total 100.00% $553,139,194 $536,242,304 $187,094,404 $344,005,398 64.15%



ARCH INSURANCE COMPANY

2003 Supplemental Data for

Property & Casualty

Professional Liability (Excl Medical Malpractice)

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 8.06% $2,099,981.00 $1,023,564.00 $0.00 $508,805.00 49.71%
Missouri Total 100.00% $26,055,353 $21,252,666 $12,810,273 $18,589,750 87.47%



ARCH INSURANCE COMPANY

2003 Supplemental Data for

Property & Casualty

Surety

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.10% $56,557.00 $32,222.00 $0.00 $9,666.00 30.00%
Missouri Total 100.00% $59,048,656 $56,336,389 $10,471,547 $7,015,246 12.45%



ARCH INSURANCE COMPANY

2003 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 0.18% $941,223.00 $699,166.00 $456,032.00 $514,753.00 73.62%
Missouri Total 100.00% $525,235,729 $516,072,744 $287,943,393 $323,588,706 62.70%



ARCH INSURANCE COMPANY

2003 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 0.03% $61,278.00 $317,861.00 $118,447.00 $163,834.00 51.54%
Missouri Total 100.00% $224,541,860 $219,821,214 $138,606,011 $117,163,205 53.30%



ARCH INSURANCE COMPANY

2003 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 0.06% $4,250,592.00 $3,846,770.00 $1,309,251.00 $2,182,752.00 56.74%
Missouri Total 100.00% $7,709,068,371 $7,428,541,557 $4,322,007,505 $4,840,084,182 65.16%



ARCH INSURANCE COMPANY

2003 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 18.44% $829,933.00 $1,234,548.00 $642,492.00 $712,007.00 57.67%
Missouri Total 100.00% $4,500,120 $4,377,791 $3,581,791 $3,366,751 76.91%



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