There is almost no one who has not heard the name of legendary investor Warren Buffett. One of the most successful investors in the world, Buffett's wealth comes not only from the stocks he chooses, but also from his investment philosophy. The book "The Warren Buffett Portfolio" written by Robert G. Hagstrom explains in depth how Buffett thinks and what he bases his decisions on. This book is not just an investment guide; it is like a roadmap showing how investor psychology should be. Let's take a look at the basic rules you need to pay attention to in order to think and invest like Buffett.
1. Be aware that you are a partner in the company you buy shares of
If you look at a stock as an asset whose price goes up and down, you miss the big picture. According to Buffett, every stock is actually a part of a company. In other words, when you buy a stock, you become a partner in that business. When you think from this perspective, you do not buy and sell randomly; you make long-term plans just like a business owner. For example, think of investing in a coffee chain: you look not only at its price, but also at its number of customers, profit margin, and competitiveness.
2. Focus on companies you trust
It may not be wise to put all your eggs in one basket, but spreading them out over too many baskets can limit your returns. According to Buffett, over-diversifying, that is, spreading your portfolio too thin, can be just as harmful as not diversifying. That’s why, instead of putting money in crowded baskets like mutual funds; Buffett prefers to invest meaningful amounts in a limited number of strong companies.
Buffett believes that detailed research should be done before investing in a stock. After you do your research and get to know that company well, you should not hesitate to allocate a significant portion of your portfolio to that stock. Similarly, instead of dividing your portfolio into dozens of companies, Buffett finds it more appropriate to focus on a few good companies with high growth potential. Buffett summarizes his approach as follows: “It’s not just about finding the best company, it’s about truly believing in that company.” If a company you really like is low-risk and looks solid in the long term, why would you invest money in the 20th-ranked company and lose focus?
3. Don’t change your portfolio frequently
Although buying and selling stocks frequently may sound smart, it actually weakens your long-term return potential. The commissions you pay on each transaction increase, you pay taxes on short-term profits, and this erodes your overall earnings. Buffett’s approach is clear: If you own a small piece of a great company, you should think of it as if you were running it entirely and hold on to it patiently. Because being successful in the stock market doesn’t require frequent moves, but a long-term partnership with the right company.
Also remember this: If you sell a stock that has risen too high and say “I’ll buy it back at a lower price anyway,” you may never see that low level again. If the stock rises even higher, you’ll either have to buy that position back at a higher price or you’ll miss the opportunity completely by staying on the sidelines. Thinking long-term is the healthiest way to protect yourself from such mistakes.
4. Change your benchmark
When investing, focusing solely on the stock price can mislead you. According to Buffett, what matters is the company’s underlying performance. For example, a stock may have remained stable in price, but if the company increases its sales, reduces its costs and increases its net profit, this will definitely be reflected in the price in the long run. When you notice this change early, you will be in the right place even if the market has not yet fully understood it. In other words, it is not the price you see on the screen that is important, but the quality of the work the company does. If the company is regularly increasing its profits and creating value for its shareholders, the price will catch up with these developments, albeit late. Don't let short-term fluctuations drive you into panic; even if the stock price does not move immediately, companies with solid foundations make profits in the long run.
5. Learn to think in terms of probabilities
One of Buffett's favorite games is bridge. Because in this game, even if you don't know which card will come and when, you need to make the right move by calculating the probabilities well. Buffett uses the same approach in investing: Instead of always looking for certainty, try to evaluate the probabilities.
When investing in a company, you should ask the question "How much can this company increase its profits in the next 5-10 years?" The answer may not be definitive, but factors like a strong business model, industry dynamics, and past performance give you an idea. When you think this way, you won’t panic even if the stock price falls in the short term. Because you know that in the long run, you will most likely be on the winning side.
6. Know and control your psychology
Investment is not just about numbers; most of it is mental. Successful investors make their decisions based on probabilities and economic data, not fear or greed. According to Buffett, emotions can be the investor's biggest enemy. Market fluctuations are inevitable, but if you trust the fundamentals of a company, you should continue on your path patiently, regardless of short-term noise. Therefore, if you want to be a successful investor, it is essential to develop your own mental resilience. You make money when you stay calm, not when you panic. The right psychological perspective will both protect you from losses and allow you to evaluate opportunities calmly.
7. Forget about market predictions
Even if the market is constantly surrounded by negative news, it will rise after a while. You should not listen to the doomsayers who constantly say "crisis is imminent" or the overly optimists who claim that everything will always rise.
Buffett's advice is clear: Don't try to predict the market, no one can anyway. Instead, focus on quality companies that are currently traded below their deserved value. Because one day the market will definitely realize the true value of these companies and then you will be the winner.
8. Wait patiently for the “best opportunity”
Think of a master fisherman—he doesn’t pull every hook. He waits patiently to catch the biggest fish, and throws the right bait into the water at the right time. Because he knows that getting carried away with small fish can cause him to miss big opportunities. Buffett also recommends this strategy in investing: Assume that you can only make 20 big investment decisions in your life. Every investment right you have is valuable; so don’t waste it on random opportunities. Be patient, do good analysis, and wait for companies with really strong, long-term potential. This approach protects you from unnecessary risks and allows you to use your capital more efficiently. Remember, you don’t have to jump on every hook—but when you do, target the big fish.
What stocks does Buffett invest in?
According to his latest 13-F report, Warren Buffett currently invests approximately 58% of Berkshire’s $287 billion portfolio in just four strong stocks. Warren Buffett, who announced that he will step down as CEO of Berkshire Hathaway at the end of this year, continued to sell banking stocks such as Bank of America (BAC) and Capital One (COF) in the first quarter. Buffett’s biggest stock purchase was Constellation Brands (STZ): In the first quarter, the investment giant increased its Constellation position by 114%.
The top 10 stocks with the highest positions in Warren Buffett’s portfolio:
Apple (AAPL)
American Express (AXP)
Coca-Cola (KO)
Bank of America (BAC)
Chevron (CVX)
Occidental Petroleum (OXY)
Moody’s (MCO)
Kraft Heinz (KHC)
Chubb (CB)
DaVita (DVA)
The information, comments and recommendations contained herein are not within the scope of investment consultancy. Investment consultancy services are provided within the framework of the investment consultancy agreement to be signed between brokerage firms, portfolio management companies, banks that do not accept deposits and customers. The comments in this article are only my personal comments and these comments may not be appropriate for your financial situation and risk return. For this reason, investments should not be made based on the information and comments in my articles.
