White Mountains reports 1% drop in Q3 2026 book value per share
White Mountains Insurance Group disclosed that its book value per share fell to $2,243 at the end of September 2026, a 1% decline versus the prior quarter but a 3% rise year‑to‑date. The dip was caused by unrealized investment losses tied to higher interest rates and a fall in the market price of its MediaAlpha holding, which generated a $54 million mark‑to‑market loss. Operating results were solid, with Ark posting a 75% combined ratio and $386 million of gross written premiums, while Kudu’s return on equity slipped to 8% amid higher rates. Comprehensive income for the quarter was a loss of $39 million, compared with a $114 million gain a year earlier.
Why it matters
The decline in book value per share reduces the equity cushion for shareholders and may affect dividend policy, as noted by the company. The $54 million loss from MediaAlpha highlights exposure to equity market volatility, which could influence future investment strategy.
Key facts
- 1Book value per share was $2,243 as of September 30, 2026, down 1% for the quarter and up 3% for the first nine months, including dividends. prnewswire.com
- 2Comprehensive income attributable to common shareholders was a loss of $(39) million for Q3 2026. prnewswire.com
- 3MediaAlpha’s share price fell 24% in the quarter, resulting in a $54 million mark‑to‑market loss on the remaining position. bernews.com
- 4Ark reported a combined ratio of 75% and gross written premiums of $386 million in Q3 2026. prnewswire.com
- 5Kudu’s trailing‑12‑month return on equity declined to 8% during the quarter. prnewswire.com
- 6Undeployed capital remained at roughly $0.8 billion. prnewswire.com
Summary written by AlphAI AI Desk from 4 of 4 sources. Not investment advice. Figures are as stated by the linked sources.