ARCH INSURANCE COMPANY

2008 Supplemental Data for

Property & Casualty

Aircraft

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 1.39% $418,501.00 $419,968.00 $21,887.00 $189,790.00 45.19%
Missouri Total 100.00% $30,184,694 $30,316,999 $16,077,301 $19,562,911 64.53%



ARCH INSURANCE COMPANY

2008 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 -0.08% $-14,319.00 $-12,882.00 $0.00 $-1,608.00 12.48%
Missouri Total 100.00% $18,807,299 $18,806,672 $5,489,504 $3,970,647 21.11%



ARCH INSURANCE COMPANY

2008 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 0.00% $-5.00 $-1.00 $0.00 $-2.00 200.00%
Missouri Total 100.00% $3,167,368 $3,299,915 $214,812 $541,296 16.40%



ARCH INSURANCE COMPANY

2008 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 0.16% $121,994.00 $106,054.00 $24,904.00 $29,133.00 27.47%
Missouri Total 100.00% $77,057,583 $78,921,978 $48,940,904 $49,540,130 62.77%



ARCH INSURANCE COMPANY

2008 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 0.49% $272,264.00 $236,693.00 $156,258.00 $178,958.00 75.61%
Missouri Total 100.00% $55,520,797 $57,985,862 $36,017,749 $34,078,969 58.77%



ARCH INSURANCE COMPANY

2008 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 0.73% $1,888,663.00 $1,649,623.00 $104,064.00 $297,189.00 18.02%
Missouri Total 100.00% $258,154,184 $257,360,422 $125,225,656 $97,952,380 38.06%



ARCH INSURANCE COMPANY

2008 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 0.30% $27,033.00 $23,790.00 $0.00 $0.00 0.00%
Missouri Total 100.00% $9,035,215 $9,318,286 $7,439,679 $10,472,913 112.39%



ARCH INSURANCE COMPANY

2008 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 0.21% $33,123.00 $29,149.00 $0.00 $0.00 0.00%
Missouri Total 100.00% $15,917,096 $16,537,312 $9,055,000 $5,480,603 33.14%



ARCH INSURANCE COMPANY

2008 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 0.18% $250,353.00 $359,166.00 $0.00 $-35,480.00 -9.88%
Missouri Total 100.00% $138,786,628 $140,042,733 $59,970,280 $61,029,098 43.58%



ARCH INSURANCE COMPANY

2008 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% $796,974.00 $1,112,658.00 $693,250.00 $906,236.00 81.45%
Missouri Total 100.00% $617,263,524 $620,689,922 $328,059,456 $325,579,492 52.45%



ARCH INSURANCE COMPANY

2008 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 0.44% $3,892,087.00 $3,776,382.00 $785,132.00 $2,416,023.00 63.98%
Missouri Total 100.00% $891,058,853 $920,403,457 $488,936,905 $555,612,334 60.37%



ARCH INSURANCE COMPANY

2008 Supplemental Data for

Property & Casualty

Earthquake

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.14% $116,235.00 $141,290.00 $0.00 $0.00 0.00%
Missouri Total 100.00% $84,492,688 $81,049,628 $188,260 $-44,004 -0.05%



ARCH INSURANCE COMPANY

2008 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 1.02% $232,302.00 $254,185.00 $0.00 $127,331.00 50.09%
Missouri Total 100.00% $22,725,317 $22,907,547 $7,746,231 $24,214,873 105.71%



ARCH INSURANCE COMPANY

2008 Supplemental Data for

Property & Casualty

Fidelity

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.03% $6,421.00 $3,913.00 $0.00 $1,903.00 48.63%
Missouri Total 100.00% $20,682,756 $20,432,295 $13,881,143 $12,838,518 62.83%



ARCH INSURANCE COMPANY

2008 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 -0.87% 51 $-305,406.00 $-288,326.00 $0.00 $-125,182.00 $-203,748.00 70.67%
Missouri Total 100.00% 136,386 $35,223,506 $36,046,099 $8,586 $17,334,385 $16,536,022 45.87%



ARCH INSURANCE COMPANY

2008 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 0.31% $684,352.00 $736,569.00 $441,285.00 $479,932.00 65.16%
Missouri Total 100.00% $223,065,754 $231,018,123 $112,048,086 $134,417,678 58.18%



ARCH INSURANCE COMPANY

2008 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% $-25.00 $-4.00 $0.00 $-31.00 775.00%
Missouri Total 100.00% $37,715,153 $37,528,549 $23,843,516 $19,171,992 51.09%



ARCH INSURANCE COMPANY

2008 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 0.57% $3,465,038.00 $3,283,359.00 $431,431.00 $1,426,582.00 43.45%
Missouri Total 100.00% $604,569,893 $615,621,569 $387,895,647 $326,778,287 53.08%



ARCH INSURANCE COMPANY

2008 Supplemental Data for

Property & Casualty

Other Liability - Warranty

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 $-53.00 0.00%
Missouri Total 100.00% $46,950,487 $24,789,379 $28,591,725 $29,423,664 118.69%



ARCH INSURANCE COMPANY

2008 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 $14,981.00 $14,981.00 0.00%
Missouri Total 100.00% $701,144,550 $700,313,850 $477,171,987 $492,756,427 70.36%



ARCH INSURANCE COMPANY

2008 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 1.13% $325,871.00 $324,718.00 $0.00 $161,180.00 49.64%
Missouri Total 100.00% $28,737,063 $29,395,330 $21,476,963 $34,290,103 116.65%



ARCH INSURANCE COMPANY

2008 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 3.81% $2,746,881.00 $2,601,296.00 $0.00 $0.00 0.00%
Missouri Total 100.00% $72,144,732 $71,563,769 $13,583,996 $35,635,114 49.79%



ARCH INSURANCE COMPANY

2008 Supplemental Data for

Property & Casualty

Surety

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.08% $66,020.00 $164,166.00 $0.00 $60,145.00 36.64%
Missouri Total 100.00% $83,321,843 $83,851,726 $8,959,400 $6,638,566 7.92%



ARCH INSURANCE COMPANY

2008 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 0.00% 51 $-305,406.00 $-288,326.00 $0.00 $-125,182.00 $-203,748.00 70.67%
Missouri Total 100.00% 14,659,481 $6,922,016,805 $6,923,691,877 $3,843,365 $5,312,904,301 $5,378,359,740 77.68%



ARCH INSURANCE COMPANY

2008 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 0.49% $2,343,077.00 $2,045,309.00 $285,226.00 $505,280.00 24.70%
Missouri Total 100.00% $477,550,267 $483,398,095 $266,550,419 $232,551,058 48.11%



ARCH INSURANCE COMPANY

2008 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 0.07% $250,353.00 $359,166.00 $0.00 $-35,480.00 -9.88%
Missouri Total 100.00% $375,864,213 $371,145,068 $189,278,815 $218,124,965 58.77%



ARCH INSURANCE COMPANY

2008 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 -0.02% 51 $-305,406.00 $-288,326.00 $0.00 $-125,182.00 $-203,748.00 70.67%
Missouri Total 100.00% 2,124,929 $1,991,705,013 $1,985,116,010 $3,663,200 $1,466,916,349 $1,497,915,994 75.46%



ARCH INSURANCE COMPANY

2008 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 $14,981.00 $14,981.00 0.00%
Missouri Total 100.00% $2,778,334,278 $2,765,680,206 $1,791,179,745 $1,814,488,748 65.61%



ARCH INSURANCE COMPANY

2008 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% $15,591,981.00 $15,465,931.00 $2,769,879.00 $6,343,034.00 41.01%
Missouri Total 100.00% $8,482,169,798 $8,475,190,441 $5,193,444,276 $5,545,130,263 65.43%



ARCH INSURANCE COMPANY

2008 Supplemental Data for

Property & Casualty

Umbrella

Market_Share Direct Premium Written Direct Premium Earned Direct Losses Paid Direct Losses Incurred Loss Ratio
Company Total 0.30% $145,695.00 $138,120.00 $0.00 $0.00 0.00%
Missouri Total 100.00% $48,152,934 $40,149,037 $33,955,324 $73,154,735 182.21%



ARCH INSURANCE COMPANY

2008 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 1.43% $116,523.00 $117,719.00 $96,687.00 $90,825.00 77.15%
Missouri Total 100.00% $8,150,976 $8,036,011 $5,328,889 $4,423,602 55.05%



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