THE READING ROOM · HISTORICAL CASE STUDY

The Buffett Partnership Era

1956–1969 · A practitioner-grade reading

The thirteen years that made Warren Buffett rich and set the operating template for everything Berkshire Hathaway later became. Fee structure, compounding math, the Sanborn Map trade, Dempster Mill, American Express, the Berkshire “biggest mistake,” the disciplined 1969 closing. Twelve sections, sources cited, framework applied.

Historical Case Free ⬇ Download the 15-page memo (PDF)
A note from the Institute

Every serious Buffett reader eventually confronts the same problem: most of the writing about him is either academic (Wharton-textbook returns decomposition) or worshipful (Oracle-of-Omaha hagiography). Neither is useful to a working practitioner. This memo attempts the middle path — plain-English, direct, math shown, framework applied, honest about the mistakes.

The document is 15 pages. Readable in one sitting. Designed to be printed and marked up with a pen.

— Philip A. Baratelli, CPA, MBA · July 2026

What’s in the memo

  1. Section 1 — The setup (1956–1957). Buffett quits Graham-Newman at 25. Family and friends approach him. Buffett Associates Ltd. opens with $105,000.
  2. Section 2 — The fee structure nobody uses today. 0/6/25 explained in plain English. Comparison to modern 2/20 with dollar math shown.
  3. Section 3 — The compounding table. 13 years of returns, partnership vs. Dow, excess column.
  4. Section 4 — Six partnerships, one merger. The 1962 consolidation under §721.
  5. Section 5 — The Sanborn Map trade. Activism verging on greenmail. The math that defended it.
  6. Section 6 — Dempster Mill. Harry Bottle, hidden-balance-sheet play, and Buffett’s three-category classification (generals, workouts, controls).
  7. Section 7 — American Express and the salad-oil scandal. Brand-moat contrarian bet at 40% Partnership concentration.
  8. Section 8 — Berkshire Hathaway. The unromanticized read. Twelve and a half cents. The $200 billion opportunity cost.
  9. Section 9 — The 1969 closing. Disciplined exit at the peak.
  10. Section 10 — The fee math. What Buffett actually earned, and why patient capital produced a bigger long-run outcome.
  11. Section 11 — Modern parallels. Could this structure work today?
  12. Section 12 — Framework lessons for working practitioners. Six lessons, plain English.

Read the full memo

15 pages. Sources cited. Free. Institute chrome, print-friendly.

⬇ Download PDF
Related reading in the Institute

Companion historical cases: Vanderbilt (1794–1877) and Rockefeller (1839–1937) are the industrial-fortune counterparts to the Partnership Era — concentrated capital deployed in the industrial economy, where Buffett deployed it in the investment economy.

Berkshire Reads: Berkshire Read Print Edition covers Berkshire Hathaway’s post-1969 evolution as a permanent-capital holding company. The Partnership Era memo above is the essential prequel. Berkshire Acquisitions catalogs every operating company Berkshire has purchased since 1965.

Institute tools and guides for practitioners: The free Compounding Engine tool visualizes the math that turned Buffett’s 0/6/25 fee structure into a personal fortune. The Financial Modeling Toolkit covers the modeling mechanics for readers who want to build the equivalent structures. Readers new to the vehicles start with the $49 Investing Plain English Guide and the $49 Family Office Plain English Guide.

Reading Room Classics: Back to the full Reading Room for public-domain finance classics (Lefèvre’s Reminiscences, Mackay’s Delusions, Carnegie’s Gospel of Wealth, and more).