What is Arch Capital Group's casualty — year eight?

Arch Capital Group (ACGL) reported casualty — year eight of 6.8% in Q4 2025.

How has Arch Capital Group's casualty — year eight changed year-over-year?

Arch Capital Group's casualty — year eight decreased by 5.6% year-over-year, from 7.2% to 6.8%.

What does casualty — year eight mean?

Represents the cumulative net loss development for casualty insurance business eight years after the policy year. This metric is used to assess the finality and accuracy of reserves for older underwriting years.

Arch Capital Group ACGL Casualty — Year Eight

Other product segments

Marine and aviation

1.1%-21.4%

Property catastrophe

1%-33.3%

Property excluding property catastrophe

0.7%+250%

Specialty

0.5%-28.6%

Similar metrics at other companies

SPNTCasualty — Year 8

3.8%+2.7pp

EGCasualty Insurance — Year eight

12.8%—

GLRECasualty — Year 8

8.8%+0.4pp

KNSLCasualty - claims made — Historical Claims Duration, Year Eight

2.4%-0.6pp

SIGICasualty lines — Short-duration insurance contracts, historical claims duration, year eight

7.8%-0.3pp

EGCasualty Insurance — Year nine

9.5%—

Other financials

Income statement

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Revenue$4.5B-3.3%

Net income$1.0B+82.4%

EPS (diluted)$2.88+94.6%

Balance sheet

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Cash & equivalents$1.8B-10.3%

Total debt$2.4B0.0%

Total equity$24.2B+12.3%

Total assets$81.4B+8.3%

Cash flow

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Operating cash flow$1.2B-18.5%

CapEx$8.0M-11.1%

Free cash flow$1.2B-18.6%

Valuation

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Market cap$34.08B0.0%

Enterprise value$34.7B-0.2%

P/E7×-2.1×

P/S1.7×-0.1×

Profitability

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Net margin24.6%+3.9pp

FCF margin29.6%-6.3pp

Returns & leverage

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Return on equity21.3%+2.9pp

Debt / equity0.1×0.0×

Where this comes from

Reported directly by Arch Capital Group in its filing.

Tagged under the XBRL concept us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearEight.

The official record: Arch Capital Group’s 10-K, filed February 26, 2026, on SEC EDGAR. View the filing →

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Questions, answered.

What is Arch Capital Group's casualty — year eight?: Arch Capital Group (ACGL) reported casualty — year eight of 6.8% in Q4 2025.
How has Arch Capital Group's casualty — year eight changed year-over-year?: Arch Capital Group's casualty — year eight decreased by 5.6% year-over-year, from 7.2% to 6.8%.
What does casualty — year eight mean?: Represents the cumulative net loss development for casualty insurance business eight years after the policy year. This metric is used to assess the finality and accuracy of reserves for older underwriting years.