Arch Capital’s Q3’25 underwriting income rises to $871m amid improved reinsurance result

Arch Capital Group Ltd., the Bermuda-based insurer and reinsurer, has reported a 62% year-on-year rise in underwriting income to $871 million for the third quarter of 2025, driven by a significantly stronger underwriting performance in its reinsurance business.Group-wide, Arch’s combined ratio strengthened by 6.8 percentage points to 79.8% for Q3’25, as the loss ratio came down by 9.1 percentage points to 51.4%, and the expense ratio increased by 2.3 percentage points to 28.4%.Pre-tax current accident year ...