Arch Capital Group Marine and aviation — Year Eight decreased by 21.4% to 1.1% in Q4 2025 compared to the prior quarter. Year-over-year, this metric declined by 21.4%, from 1.4% to 1.1%.
Minimal movement at this stage suggests that the reserves for these older cohorts are effectively settled.
Represents the cumulative net premiums earned or loss development attributed to the eighth year of underwriting activity...
Standard actuarial metric for long-tail specialty insurance lines.
acgl_segment_marine_and_aviation_year_eight| Q4 '21 | Q4 '22 | Q4 '23 | Q4 '24 | Q4 '25 | |
|---|---|---|---|---|---|
| Value | 0% | 0.1% | 1% | 1.4% | 1.1% |
| QoQ Change | — | — | +900.0% | +40.0% | -21.4% |
| YoY Change | — | — | +900.0% | +40.0% | -21.4% |