White Mountains Insurance Group Ltd. Reports Third‑Quarter 2026 Results

White Mountains Insurance Group Ltd. (NYSE: WTM), a provider of property‑and‑casualty insurance and reinsurance products, announced its financial results for the third quarter ended September 30, 2026. The company’s book value per share stood at $2,243, representing a 1 % decline in the quarter and a 3 % increase over the first nine months of the year when dividends are included.

Key Performance Highlights

  • Operating Results The company achieved a 75 % combined ratio and generated $386 million in gross written premiums, contributing to solid tangible book‑value growth.

  • Segment Performance

  • Ark: Delivered the combined‑ratio achievement and premium volume.

  • Kudu: Recorded higher adjusted EBITDA; however, the trailing‑12‑month return on equity fell to 8 % due to reduced fair values amid rising interest rates.

  • HG Global: Posted a record $19 million in gross written premiums, although book‑value returns were pressured by interest‑rate‑related losses.

  • Distinguished: Showed robust growth in both managed premiums and ScaleCo adjusted EBITDA.

  • WTM Partners: Experienced healthy top‑ and bottom‑line growth.

  • Investment Impact Higher interest rates and a 24 % decline in MediaAlpha’s share price produced $54 million of unrealized mark‑to‑market losses, offsetting operating gains.

CEO Commentary

Liam Caffrey, CEO, noted that while the quarter was otherwise solid, unrealized investment losses due to market conditions tempered the book‑value performance. He emphasized the resilience of the operating business and the company’s focus on maintaining a strong capital position.

Market Context

  • The stock traded at $2,376.30 on November 3, 2026, near its 52‑week high of $2,378.94.
  • The company’s market capitalization is $5.38 billion.
  • A price‑to‑earnings ratio of 5.21 indicates a relatively low valuation relative to earnings.

In a separate announcement, White Mountains Insurance Group highlighted its participation in the EXPO 2027 Belgrade event at the World Travel Market (WTM) London. The company promoted Serbia’s tourism offerings and positioned the upcoming exposition as a gateway for travel across the country, aligning its corporate brand with broader industry initiatives.

Summary

White Mountains Insurance Group Ltd. reported a modest decline in book value per share for the third quarter of 2026, largely attributable to investment losses linked to elevated interest rates. Despite this, the company maintained strong premium growth and operational performance across its segments, while continuing to engage in strategic marketing initiatives such as the EXPO 2027 Belgrade promotion.