What is Arch Capital Group's property catastrophe — year seven?

Arch Capital Group (ACGL) reported property catastrophe — year seven of -4.8% in Q4 2025.

How has Arch Capital Group's property catastrophe — year seven changed year-over-year?

Arch Capital Group's property catastrophe — year seven increased by 60.3% year-over-year, from -12.1% to -4.8%.

What does property catastrophe — year seven mean?

The net change in estimated losses for property catastrophe policies seven years after they were written.

Property catastrophe — Year Seven

Arch Capital Group Property catastrophe — Year Seven increased by 60.3% to -4.8% in Q4 2025 compared to the prior quarter. Year-over-year, this metric grew by 60.3%, from -12.1% to -4.8%. This increase may warrant attention — for this metric, lower values are generally preferred.

Analysis

StatementSegment

CategoryRisk

SignalLower is better

VolatilityStable

First reportedQ4 2018

Last reportedQ4 2025

How to read this metric

Stability in this metric suggests that the underwriting segment has reached a mature, predictable state.

Detailed definition

Represents the net loss development or reserve adjustment for property catastrophe reinsurance contracts seven years aft...

Peer comparison

Standard industry practice for monitoring long-term reserve run-off.

Metric ID: acgl_segment_property_catastrophe_year_seven

Historical Data

5 periods

	Q4 '21	Q4 '22	Q4 '23	Q4 '24	Q4 '25
Value	1%	1.7%	2.4%	-12.1%	-4.8%
QoQ Change	—	+70.0%	+41.2%	-604.2%	+60.3%
YoY Change	—	+70.0%	+41.2%	-604.2%	+60.3%

Range-12.1% – 2.4%

CAGR+380.0%

Avg YoY Growth-108.2%

Median YoY Growth+50.8%

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Frequently Asked Questions

What is Arch Capital Group's property catastrophe — year seven?: Arch Capital Group (ACGL) reported property catastrophe — year seven of -4.8% in Q4 2025.
How has Arch Capital Group's property catastrophe — year seven changed year-over-year?: Arch Capital Group's property catastrophe — year seven increased by 60.3% year-over-year, from -12.1% to -4.8%.
What does property catastrophe — year seven mean?: The net change in estimated losses for property catastrophe policies seven years after they were written.