Arch Capital Group Third party occurrence business — Year Six increased by 5.0% to 10.5% in Q4 2025 compared to the prior quarter. Year-over-year, this metric grew by 5.0%, from 10.0% to 10.5%. This increase may warrant attention — for this metric, lower values are generally preferred.
Stable or declining figures suggest accurate initial reserving, whereas rising figures may indicate adverse development of long-tail claims.
Represents the net incurred losses or premiums associated with third-party occurrence-based insurance policies specifica...
Comparable to mature accident year loss development metrics in the reinsurance industry.
acgl_segment_third_party_occurrence_business_year_six| Q4 '21 | Q4 '22 | Q4 '23 | Q4 '24 | Q4 '25 | |
|---|---|---|---|---|---|
| Value | 8.7% | 9.7% | 9.8% | 10% | 10.5% |
| QoQ Change | — | +11.5% | +1.0% | +2.0% | +5.0% |
| YoY Change | — | +11.5% | +1.0% | +2.0% | +5.0% |