Arch Capital Group Third party occurrence business — Year Nine decreased by 4.2% to 4.6% in Q4 2025 compared to the prior quarter. Year-over-year, this metric declined by 4.2%, from 4.8% to 4.6%. This is a positive signal — lower values indicate better performance for this metric.
Stability in this metric indicates that the company has successfully managed the long-term liability exposure of its older business.
Represents the net incurred losses or premiums associated with third-party occurrence-based insurance policies specifica...
Similar to long-tail reserve development metrics for mature insurance portfolios.
acgl_segment_third_party_occurrence_business_year_nine| Q4 '21 | Q4 '22 | Q4 '23 | Q4 '24 | Q4 '25 | |
|---|---|---|---|---|---|
| Value | 3.5% | 3.8% | 4.4% | 4.8% | 4.6% |
| QoQ Change | — | +8.6% | +15.8% | +9.1% | -4.2% |
| YoY Change | — | +8.6% | +15.8% | +9.1% | -4.2% |