A dated verification note and source citations (annual letters, shareholder meetings, SEC filings) reassure readers the content is faithful to Buffett’s public teachings.
Buffett looks for wide moats: brand loyalty (Coca-Cola), low costs (GEICO), network effects (American Express), or regulatory advantages (utility companies). A moat protects profits from erosion by competitors. He asks: Could a rival with $10 billion destroy this business? If yes, no moat. 10 golden principles of warren buffett pdf verified
Go to (berkshirehathaway.com). Navigate to “Shareholder Letters.” Download the 1986, 1992, and 2007 letters as PDFs. These contain all ten principles explicitly stated. A dated verification note and source citations (annual