Products & Services · Year One
Multi-line and other specialty — Year One
Arch Capital Group Multi-line and other specialty — Year One decreased by 4.9% to 31.2% in Q4 2025 compared to the prior quarter. Year-over-year, this metric declined by 4.9%, from 32.8% to 31.2%.
Analysis
StatementSegment
CategoryEfficiency
SignalContext dependent
VolatilityModerate
First reportedQ4 2018
Last reportedQ4 2025
How to read this metric
Changes in Year One development indicate shifts in the speed of claim reporting or early-stage loss severity.
Detailed definition
This metric represents the loss development or claims activity specifically for the first year following the inception o...
Peer comparison
Standard component of loss development triangles; peers report this as 'Development Year 1'.
Metric ID:
acgl_segment_multi_line_and_other_specialty_year_oneHistorical Data
5 periods
| Q4 '21 | Q4 '22 | Q4 '23 | Q4 '24 | Q4 '25 | |
|---|---|---|---|---|---|
| Value | 34.7% | 34.3% | 34% | 32.8% | 31.2% |
| QoQ Change | — | -1.2% | -0.9% | -3.5% | -4.9% |
| YoY Change | — | -1.2% | -0.9% | -3.5% | -4.9% |
Range31.2% – 34.7%
CAGR-10.1%
Avg YoY Growth-2.6%
Median YoY Growth-2.3%
Current Streak4+ quarters decline
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Frequently Asked Questions
- What is Arch Capital Group's multi-line and other specialty — year one?
- Arch Capital Group (ACGL) reported multi-line and other specialty — year one of 31.2% in Q4 2025.
- How has Arch Capital Group's multi-line and other specialty — year one changed year-over-year?
- Arch Capital Group's multi-line and other specialty — year one decreased by 4.9% year-over-year, from 32.8% to 31.2%.
- What does multi-line and other specialty — year one mean?
- Claims activity and loss development during the first year of the underwriting period.