White Mountains Insurance Group, Ltd. reported book value per share of $2,243 as of September 30, 2026, a decrease of 1% for the third quarter of 2026 and an increase of 3% for the first nine months of 2026, including dividends. Comprehensive income (loss) attributable to common

White Mountains Insurance Group, Ltd. Reports Book Value Per Share of $2,243 as of September 30, 2026

White Mountains Insurance Group has rewarded long term holders, so the question now is whether the current share price is properly supported by the returns the business earns on its capital. For anyone looking at the stock today, the central issue is how those underlying returns stack up against the industry average. Over the past 5 years, White Mountains Insurance Group has delivered a 96.7% share price gain, which puts real weight on whether the underlying return on capital justifies that...

White Mountains Insurance Group (WTM) Stock May Be 40% Below Fair Value As Excess Returns Hold

Harris Oakmark recently released its third-quarter 2026 investor letter for its “Oakmark Global Select Fund”. It is a non-diversified fund that focuses on long-term capital appreciation by investing in common stocks of U.S. and non-U.S. companies. The letter can be downloaded here. The Fund (Investor Class) returned 5.14% for the quarter, surpassing the MSCI World […]

How Efficiency and AI Support White Mountains Insurance Group, Ltd.’s (WTM) Revaluation Thesis

In trading on Thursday, shares of White Mountains Insurance Group Ltd (Symbol: WTM) crossed above their 200 day moving average of $2127.95, changing hands as high as $2151.10 per share.  White Mountains Insurance Group Ltd shares are currently trading up about 2.1% on the day.

WTM Makes Bullish Cross Above Critical Moving Average

Key PointsBeginner investors often use the share price figure to determine a stock's size or relative "cheapness," but this is a major mistake.

Most Beginning Investors Ignore Market Cap. That's a Costly Mistake.

Bamboo Insurance Services, Inc. ("Bamboo Insurance"), a technology-enabled, underwriting-first, and capital-light managing general underwriter focused on homeowners' coverage, today announced that it has launched the roadshow for its proposed initial public offering of 35,000,000 shares of its Class A common stock. The offering consists entirely of secondary shares to be sold by entities affiliated with CVC Capital Partners and White Mountains Insurance Group, Ltd. (together, the "selling stockh

Bamboo Insurance Announces Launch of Initial Public Offering

White Mountains Insurance Group, Ltd. provides insurance services in the United States, the United Kingdom, Bermuda, and internationally. It operates through Ark/WM Outrigger, HG Global, Kudu, Distinguished, and Other Operations segments. The company offers property insurance and reinsurance; specialty insurance and reinsurance consisting of aviation, contingency, cyber, fine art and specie, mortgage, nuclear, political and credit, space, surety, and terrorism and political violence; marine and energy insurance and reinsurance; casualty insurance and reinsurance, such as medical malpractice, and professional and general liability; and accident and health insurance and reinsurance, which includes personal accident, sickness, disability, travel, short-term life, and medical products through brokers, managing general agents (MGA), and reinsurance intermediaries. It also provides municipal bond guarantee reinsurance, which focuses on single risk limits for small-to-medium sized, and public investment grade municipal bonds that are issued to finance public purpose projects, including schools, utilities, and transportation facilities. In addition, the company offers capital solutions for boutique asset and wealth managers for generational ownership transfers, management buyouts, acquisition and growth finance, and legacy partner liquidity; strategic advice; investment management; and specialty electrical contracting services. Further, it operates as a full-service MGA and program administrator for specialty property and casualty insurance for the real estate and hospitality end markets, and start-up programs; and an MGA for leisure travel and global expatriate medical insurance in Israel, the European Union, and Australia. The company was formerly known as Fund American Enterprises Holdings, Inc. and changed its name to White Mountains Insurance Group, Ltd. in 1999. White Mountains Insurance Group, Ltd. was incorporated in 1980 and is headquartered in Hamilton, Bermuda.

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