10 Golden Principles Of Warren Buffett Pdf Verified May 2026

Buffett emphasizes the importance of understanding what you're investing in. He advises investors to stay within their circle of competence and avoid investments that are too complex or uncertain.

“Diversification is protection against ignorance. If you know what you are doing, it makes little sense to own 50 stocks.” — 1993 Interview

Contrary to modern portfolio theory, Buffett argues that a small number of high-conviction investments (5–10) is optimal for knowledgeable investors. Berkshire’s equity portfolio often has 60–70% of its value in just 3–5 positions (Apple, Bank of America, American Express, Coca-Cola at various times). Diversification across mediocrity guarantees mediocre returns.

Buffett is known for his long-term approach to investing. He advises investors to have a time horizon of at least 5-10 years, allowing them to ride out market fluctuations. 10 golden principles of warren buffett pdf verified

The Principle: Be wary of companies that follow the herd. The Insight: Buffett coined the "Institutional Imperative"—the tendency of CEOs to imitate the behavior of other CEOs, regardless of whether it is smart. If a company makes an acquisition just because others are doing it, avoid it.

Buffett is not infallible. He has admitted mistakes:

Even so, adherence to these principles produced a 20%+ annual return from 1965–2020, versus 10% for the S&P 500. “Diversification is protection against ignorance

These principles are best verified by reading the primary sources directly. You can download the official PDFs for free from the Berkshire Hathaway website:

“We don’t borrow money. Period.” — 2008 Fortune Interview (referring to Berkshire’s insurance float as a non-recourse liability, not debt)

Buffett distinguishes between productive leverage (insurance premiums collected before paying claims) and dangerous leverage (bank loans, margin debt). Berkshire holds at least $20–30 billion in cash to survive any crisis. He famously avoided the 2008 financial crisis collapse because Berkshire had no short-term debt. Principle: You can only compound wealth if you are not forced to sell at the worst possible time. Contrary to modern portfolio theory, Buffett argues that

“We look for three things: Intelligence, Energy, and Integrity. If they don’t have the third, the first two will kill you.”

Source: 1993 Lecture at University of Florida (Video transcript verified). Action: Research the CEO. Do they buy back shares at smart prices? Do they treat shareholders as partners? Avoid managers who take lavish perks or issue vague earnings guidance.