ACGLN · Arch Capital Group Ltd.

Arch Capital Group delivered a materially stronger Q1 2026 performance versus Q1 2025, with net income surging 84% year-over-year to $1.037 billion and diluted EPS rising 95% to $2.88. This outperformance was driven by significant improvements in underwriting profitability: the consolidated combined ratio fell 8.4 points to 81.7%, supported by a 15.9-point improvement in the reinsurance segment (to 75.9%) and a 3.6-point improvement in the insurance segment (to 96.5%). The reinsurance segment’s gain stemmed largely from sharply lower catastrophe losses—$174 million in Q1 2026 versus an estimated $392 million in Q1 2025—and $200 million in favorable prior-year reserve development, which reduced the reinsurance loss ratio by 8.3 points. The insurance segment benefited from lower catastrophe impact (4.2 vs. 9.5 points) and continued integration of the MCE Acquisition, though its underwriting expense ratio rose to 36.3% due to higher compensation and transitional costs. Management attributed the results to disciplined underwriting and capital allocation, citing a 15.4% annualized operating ROE—the highest in recent quarters—and reaffirming Arch’s positioning for 'best-in-class returns through the cycle.' The Company also executed $783 million in share repurchases, contributing to a 1.7% sequential increase in book value per share to $66.19. While no formal forward guidance was issued, the press release emphasized sustained underwriting discipline and balance sheet strength as key enablers of continued outperformance.