ARCH INSURANCE COMPANY

2011 Supplemental Data for

Property & Casualty

Aircraft

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.08% $20,686.00 $39,462.00 $73,653.00 $-42,181.00 -106.89%
Missouri Total 100.00% $27,325,168 $26,941,354 $15,695,916 $14,622,663 54.28%



ARCH INSURANCE COMPANY

2011 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 0.25% $172,971.00 $169,212.00 $151,782.00 $98,839.00 58.41%
Missouri Total 100.00% $67,973,411 $67,092,775 $49,185,497 $49,373,363 73.59%



ARCH INSURANCE COMPANY

2011 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 0.20% $98,080.00 $95,949.00 $86,065.00 $56,045.00 58.41%
Missouri Total 100.00% $48,805,511 $49,307,255 $48,995,508 $50,364,145 102.14%



ARCH INSURANCE COMPANY

2011 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 0.69% $1,681,815.00 $1,650,051.00 $145,523.00 $565,718.00 34.28%
Missouri Total 100.00% $243,315,390 $242,282,062 $131,212,252 $157,399,677 64.97%



ARCH INSURANCE COMPANY

2011 Supplemental Data for

Property & Casualty

Commercial Auto Medical Payments

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.41% $36,749.00 $36,055.00 $654.00 $0.00 0.00%
Missouri Total 100.00% $8,935,290 $8,845,547 $11,944,181 $16,319,151 184.49%



ARCH INSURANCE COMPANY

2011 Supplemental Data for

Property & Casualty

Commercial Auto Uninsured Motorists

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.30% $56,008.00 $54,950.00 $0.00 $0.00 0.00%
Missouri Total 100.00% $18,985,703 $18,979,158 $13,430,615 $13,989,339 73.71%



ARCH INSURANCE COMPANY

2011 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 0.11% $144,676.00 $148,103.00 $38,822.00 $259,626.00 175.30%
Missouri Total 100.00% $132,096,980 $132,862,854 $534,785,776 $914,391,979 688.22%



ARCH INSURANCE COMPANY

2011 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 0.13% $809,748.00 $745,511.00 $362,809.00 $169,297.00 22.71%
Missouri Total 100.00% $623,078,795 $617,289,195 $781,102,405 $1,024,996,965 166.05%



ARCH INSURANCE COMPANY

2011 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 0.49% $3,485,165.00 $3,472,395.00 $1,439,836.00 $2,135,637.00 61.50%
Missouri Total 100.00% $711,838,566 $698,167,969 $466,741,914 $445,394,771 63.79%



ARCH INSURANCE COMPANY

2011 Supplemental Data for

Property & Casualty

Earthquake

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.13% $113,717.00 $117,894.00 $0.00 $0.00 0.00%
Missouri Total 100.00% $88,645,202 $88,150,399 $14,839 $264,831 0.30%



ARCH INSURANCE COMPANY

2011 Supplemental Data for

Property & Casualty

Excess Workers Compensation

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 1.23% $313,754.00 $308,551.00 $0.00 $193,919.00 62.85%
Missouri Total 100.00% $25,406,274 $24,527,899 $5,444,789 $15,795,772 64.40%



ARCH INSURANCE COMPANY

2011 Supplemental Data for

Property & Casualty

Fidelity

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.31% $66,884.00 $50,633.00 $0.00 $14,633.00 28.90%
Missouri Total 100.00% $21,813,242 $20,604,814 $21,654,301 $23,726,307 115.15%



ARCH INSURANCE COMPANY

2011 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 0.37% $838,337.00 $784,143.00 $298,191.00 $350,014.00 44.64%
Missouri Total 100.00% $225,757,245 $224,301,660 $95,502,294 $102,810,977 45.84%



ARCH INSURANCE COMPANY

2011 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% $0.00 $0.00 $166.00 $20,166.00 0.00%
Missouri Total 100.00% $27,459,940 $25,797,383 $15,034,458 $6,398,527 24.80%



ARCH INSURANCE COMPANY

2011 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 0.38% $2,039,412.00 $2,017,514.00 $456,121.00 $1,381,064.00 68.45%
Missouri Total 100.00% $539,738,707 $507,441,650 $290,505,798 $277,999,437 54.78%



ARCH INSURANCE COMPANY

2011 Supplemental Data for

Property & Casualty

Other Specific

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 $-12,788.00 0.00%
Missouri Total 100.00% $6,542,321 $5,525,681 $677,489 $379,434 6.87%



ARCH INSURANCE COMPANY

2011 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 0.87% $239,022.00 $239,797.00 $0.00 $108,210.00 45.13%
Missouri Total 100.00% $27,565,820 $27,187,832 $34,632,487 $49,270,952 181.22%



ARCH INSURANCE COMPANY

2011 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 3.04% $2,750,201.00 $2,720,672.00 $0.00 $0.00 0.00%
Missouri Total 100.00% $90,360,354 $89,338,684 $42,534,077 $39,438,333 44.14%



ARCH INSURANCE COMPANY

2011 Supplemental Data for

Property & Casualty

Surety

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 1.33% $946,474.00 $306,243.00 $0.00 $64,167.00 20.95%
Missouri Total 100.00% $71,331,983 $75,857,806 $915,821 $2,823,594 3.72%



ARCH INSURANCE COMPANY

2011 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 0.45% $2,045,623.00 $2,006,217.00 $384,024.00 $720,602.00 35.92%
Missouri Total 100.00% $453,329,352 $449,144,084 $293,673,634 $333,884,217 74.34%



ARCH INSURANCE COMPANY

2011 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 0.04% $144,676.00 $148,103.00 $38,822.00 $259,626.00 175.30%
Missouri Total 100.00% $392,952,320 $399,228,408 $766,541,068 $1,196,005,414 299.58%



ARCH INSURANCE COMPANY

2011 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 0.18% $15,205,210.00 $14,082,238.00 $3,157,796.00 $5,558,754.00 39.47%
Missouri Total 100.00% $8,596,852,003 $8,512,987,529 $7,215,311,579 $8,060,392,321 94.68%



ARCH INSURANCE COMPANY

2011 Supplemental Data for

Property & Casualty

Umbrella

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.60% $279,466.00 $276,465.00 $0.00 $0.00 0.00%
Missouri Total 100.00% $46,892,405 $36,080,620 $27,942,582 $21,550,555 59.73%



ARCH INSURANCE COMPANY

2011 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 40.86% $1,112,045.00 $848,638.00 $104,174.00 $196,388.00 23.14%
Missouri Total 100.00% $2,721,750 $4,662,542 $5,545,296 $5,651,274 121.21%



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