Products & Services · Year One
Property catastrophe — Year One
Arch Capital Group Property catastrophe — Year One increased by 53.5% to -62.4% in Q4 2025 compared to the prior quarter. Year-over-year, this metric grew by 53.5%, from -134.2% to -62.4%.
Analysis
StatementSegment
CategoryEfficiency
SignalContext dependent
VolatilityModerate
First reportedQ4 2018
Last reportedQ4 2025
How to read this metric
High activity in year one is typical for property catastrophe lines due to the nature of rapid claim reporting.
Detailed definition
This metric represents the loss development or claim activity specifically observed during the first year following the...
Peer comparison
Standard column in actuarial loss development triangles.
Metric ID:
acgl_segment_property_catastrophe_year_oneHistorical Data
5 periods
| Q4 '21 | Q4 '22 | Q4 '23 | Q4 '24 | Q4 '25 | |
|---|---|---|---|---|---|
| Value | 21.6% | 41.7% | 56% | -134.2% | -62.4% |
| QoQ Change | — | +93.1% | +34.3% | -339.6% | +53.5% |
| YoY Change | — | +93.1% | +34.3% | -339.6% | +53.5% |
Range-134.2% – 56%
CAGR+188.9%
Avg YoY Growth-39.7%
Median YoY Growth+43.9%
Similar Metrics at Other Companies
Frequently Asked Questions
- What is Arch Capital Group's property catastrophe — year one?
- Arch Capital Group (ACGL) reported property catastrophe — year one of -62.4% in Q4 2025.
- How has Arch Capital Group's property catastrophe — year one changed year-over-year?
- Arch Capital Group's property catastrophe — year one increased by 53.5% year-over-year, from -134.2% to -62.4%.
- What does property catastrophe — year one mean?
- The loss activity observed during the first year of an underwriting period.