How Does Berkshire Hathaway Make its Money?

Berkshire Hathaway, led by Warren Buffett, is one of the world’s largest conglomerates — a collection of wholly owned businesses plus a massive public stock portfolio. Berkshire operates across insurance (GEICO, Gen Re, Berkshire Hathaway Reinsurance), railroads (BNSF), energy (Berkshire Hathaway Energy), manufacturing, retail, and services. The company also holds ~$300B in cash/Treasury bills and a $300B+ stock portfolio (Apple, Bank of America, Coca-Cola, American Express, Chevron, and others).

Revenue Breakdown

Segment 2024 2023 YoY Growth
Insurance (GEICO, Gen Re, etc.) $83.0B $79.2B +4.8%
BNSF Railway $22.8B $23.1B -1.3%
Berkshire Hathaway Energy $24.0B $25.5B -5.9%
Manufacturing $74.5B $71.1B +4.8%
McLane (Distribution) $52.0B $51.5B +1.0%
Service & Retail $25.4B $24.6B +3.3%
Investment Income & Gains $59.0B $40.3B +46.4%
Total Revenue $371.4B $364.5B +1.9%

Insurance — The Engine

Berkshire’s most important segment, not for revenue but for float — the premiums collected before claims are paid:

  • GEICO: #2 U.S. auto insurer. Returned to underwriting profitability after multi-year struggles.
  • Berkshire Hathaway Reinsurance: One of the world’s largest reinsurers, covering catastrophic risks.
  • General Re: Major reinsurer with global operations.
  • Insurance Float: ~$170B+ — This money is invested while waiting to pay claims, generating investment income. Buffett calls float “better than free” because Berkshire typically earns an underwriting profit on top of investment returns.

BNSF Railway — One of two U.S. Class I western railroads (the other is Union Pacific). Hauls consumer goods, coal, industrial products, and agricultural commodities across the western U.S.

Berkshire Hathaway Energy — Regulated utilities (PacifiCorp, MidAmerican), natural gas pipelines, and renewable energy. One of the largest renewable energy producers in the U.S.

Manufacturing — Precision Castparts (aerospace parts), Lubrizol (chemicals), Markel (building products), IMC (metalworking), and dozens more.

Investment Portfolio (Top Holdings)

Company Value (Dec 2024)
Apple ~$75B
Bank of America ~$35B
American Express ~$42B
Coca-Cola ~$26B
Chevron ~$17B

Income Statement Overview

Metric 2024 2023
Total Revenue $371.4B $364.5B
Operating Earnings $47.4B $37.4B
Net Income (incl. inv. gains) $89.0B $96.2B

Key Financial Metrics

  • Operating Earnings: $47.4B — Buffett’s preferred metric. Excludes unrealized investment gains/losses, which are volatile and distort reported earnings.
  • Cash & T-Bills: $334B — A record cash pile. Buffett waiting for “fat pitches” — large acquisitions at attractive valuations.
  • Insurance Float: $170B+ — Essentially free leverage used to generate investment returns.
  • Book Value Per Share: ~$430K (A shares) — The metric Berkshire historically used to measure intrinsic value growth.

What to Watch

  1. Capital deployment — With $334B in cash, how Berkshire deploys capital (acquisitions, stock buybacks, investments) is the single most impacthat decision under Buffett’s successor.
  2. Succession — Warren Buffett (94) and Charlie Munger (deceased Dec 2023). Greg Abel is the designated CEO successor. The transition could affect Berkshire’s deal-making prowess and brand.
  3. GEICO turnaround — GEICO has been gaining market share after fixing pricing and implementing telematics. Continued profitable growth strengthens the insurance float engine.
  4. Interest income — Berkshire earns $20B+ annually on its Treasury bill and cash holdings at current interest rates. Rate cuts would reduce this income stream.
  5. Apple position — Berkshire sold significant Apple shares in 2024 (from $170B to ~$75B), suggesting Buffett sees the stock as fully valued. Major portfolio changes signal market outlook.