Arch reinsurance profit fell to $393 million in the third quarter of 2026 from $482 million a year earlier, as premium volumes declined. The business remained Arch Capital Group’s largest underwriting contributor and reported a combined ratio of 78.3%.

Key Takeaways

  • Reinsurance net premiums written fell 9.3%, partly because of non-renewals and reduced shares of business.
  • Group net income available to common shareholders declined, even as net investment income increased.

Arch reinsurance profit and premiums

In its third-quarter results, Arch reported that reinsurance net premiums earned fell 10.3% to $1.807 billion. Net premiums written declined to $1.576 billion, while gross premiums written fell 8% to $2.313 billion.

The unit’s combined ratio rose from 76.1% a year earlier. A combined ratio below 100% generally indicates an underwriting profit. The higher loss ratio partly offset an improvement in the underwriting expense ratio.

Other segments and group earnings

Group underwriting income fell to $702 million from $871 million in the third quarter of 2025. Insurance underwriting income declined to $108 million from $129 million, while mortgage underwriting income fell to $201 million from $260 million.

Net income available to common shareholders was $1.025 billion, down from $1.340 billion a year earlier. Diluted earnings per share fell to $3.00 from $3.56. Net investment income rose to $451 million from $408 million, which Arch attributed to growth in average investable assets.

Arch repurchased $1.4 billion of shares during the quarter. CEO Nicolas Papadopoulo described market conditions as increasingly uneven.

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