"University of Berkshire Hathaway" มหาวิทยาลัยแห่งเบิร์กเชียร์ แฮธาเวย์: 30 ปีแห่งบทเรียนล้ำค่า

*1. Focus on Intrinsic Value and Always Include a Margin of Safety.* The essence of investing is understanding the difference between "price" and "value." Intrinsic value is the total net cash flow a business can generate from today into the future, discounted back to its present value (Discounted Present Value). Once you've determined the value, *the key rule is to buy at a price with a sufficiently wide "margin of safety"* to help absorb valuation errors and reduce the risk of losses. *2. Choose to Invest in "Wonderful Businesses" (Buy Wonderful Businesses).* One of the most important principles is that *"Buying a wonderful business at a fair price is better than buying a mediocre business at a wonderful price."* Wonderful businesses are those with a "moat," or sustainable competitive advantage, which could be lower production costs, a strong brand, or superior technology. In addition, good businesses should have "pricing power," the ability to raise prices without losing market share. *3. Adhere to Your "Circle of Competence."* Successful investing... You need to know what type of business you understand and stick to investing only within that scope. If you can't predict what a business will look like in the next 5-10 years, put it in the *"Too Hard"* basket and skip it. Knowing your limits will help you avoid big mistakes. *4. Wait for the Fat Pitch & Concentration* Investing is like waiting to hit a baseball. You don't need to hit every ball, but *wait for the most favorable moment (Fat Pitch)**. Furthermore, if you find a good business and truly understand it, **excessive diversification is just protecting against your own lack of knowledge.* Having a few top-tier businesses that you deeply understand (e.g., 3) is enough to generate excellent returns. *5. Understand Mr. Market and Ignore Volatility* The stock market is there to "serve" you, not to advise you. Take advantage of the market's volatility, following the principle of *"Be fearful when others are greedy."* And be greedy when others are fearful."** Furthermore, **stock price volatility is not a measure of true risk**; the real risk is investing in bad businesses or not knowing what you're doing. *6. Ignore Macroeconomics* Don't waste time predicting economic cycles, market trends, or interest rates, because no one can predict them accurately. Instead, **focus your time and energy on discovering and understanding individual businesses**. *7. Inflation Defense* Inflation is the arch-enemy of investors. The best way to defend against inflation is in two ways: *Invest in Yourself:* Increase your earning potential, as your skills will always create added value even in times of inflation. *Own a Business That Doesn't Require High Capital Investment:* A good business in an inflationary era is one that has the power to raise prices and doesn't need to constantly inject large amounts of capital to maintain its competitiveness. (For example, See's Candy),,, *8. Avoid Complexity and Creative Accounting* Avoid overly complex financial theories (e.g., Modern Portfolio Theory),,, and **beware of companies that excessively promote EBITDA figures**, as this is often misleading, since depreciation is the actual cash cost paid out. Furthermore, avoid excessive leverage and speculation in complex derivatives, which are powerful financial weapons.,,, *9. Temperament Over IQ* Successful investing doesn't require a high IQ (around 120 is sufficient), because very intelligent people often make foolish mistakes if they lack emotional control.,, *the most important thing is "discipline" and "emotional stability" (temperament)**, which allows you to distinguish your own thoughts from the crowd. At the same time, you must be a **"learning machine"* by reading and learning extensively. To make myself smarter every day...