How to Invest Wisely in Stocks Using the Billionaire Warren Buffet Method

Ted Gordon, MBA, JD Monthly Newsletter May 1, 2025 |
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Newsletter #7
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I can’t tell you how to get rich quickly. I can only tell you how to get poor quickly by trying to get rich quickly.
Andre Kostolany.
Do you know how to research before investing, or do you just pick a company stock because you like how they were doing in the past? Most people don’t analyze their stock before they buy it, and as such, they generally match the returns in one study where monkeys chose stocks in the S&P 500. Wait, say that again, Ted. Are you saying monkeys can’t choose as well as I can?
The short answer is yes; in a bull market, monkeys with their index figure dipped in ink and given a copy of the SNP 500 stock list select stocks, on average, did approximately as well in this study as the average investor. Now we’re talking averages. Some people will pick certain stocks, especially if they’re only picking one or two, and they may do very well and hit a home run. But on average, monkeys can do as well over the long term. Humans do better in the short term (three to five years) but not so much in the long term (nearer to ten years).
When you buy stock in the company because you like its products, you are saying that its products have done well in the past. I speculate that the company will continue to do well in the future, but I have no independent research or information to support that assumption. In a rising market, you are usually correct that good companies will continue to produce and gain value. But what do you do when the market turns and all your games are wiped out?
To improve your chances of making money in the stock market, you have to (1) first determine if you are in a bull or bear market, (2) choose good quality stocks unless you think you have specific information not available to the general company about a particular corporation, ‘(3) invest for the long-term, (4) seek good returns while protecting yourself from potential losses, and (5) never invest more than you can afford to lose, and (6) discipline yourself to ride with the market fluctuations, and (5) follow the principles of the diversification. Follow those rules, and you will have a much-improved chance of doing well in the stock market.
My information on investing is based on two sources. The first is Warren Buffet. If you don’t know Warren Buffett’s name, you can Google it for a barrel full of information. In summary, he is probably the best-known investor in the world., a philanthropist, and assumed to be the seventh richest man in the world (± nearly 150 billion). How successful is his investing? According to Yahoo!Finance, “If you had invested $20,000 in Berkshire Hathaway 30 years ago, which was roughly the price of one Class A share, your single share would be worth about $682,000” on January 1, 2025.
My second source for this newsletter is summarizing the contents of The Intelligent Investor, Third Edition, by Benjamin Graham, who was Warrant Buffet’s teacher. As Warrant Buffet said, Grahm’s book is “the best book on investing ever written.” So, I am basing this investment philosophy on one man, although two men made it famous.
Watch Out for Severe Down Markets
When I was playing blackjack at the casinos in Lake Tahoe, I often had a stock of winning chips in front of me. It was so exciting, but I frequently walked away with nothing by the night’s end or lost a bundle. The measuring rod is not much you are ahead at the mid-point, but how much you have at the end. And it is the same for stocks. Newton’s law, which states that everything that goes up much eventually comes down, applies in cycles on the stock market. Over decades, it climbs onward and upward, but it can fluctuate wildly during the cycle. Depending on when you buy and sell, your return will be impacted. Look at the devastation the last four rescissions caused:
Black Monday (1987). The slide a month started earlier with the collapse of the Asian markets and the closing of Lehman Brothers, and October 19, 1987, became the worst trading day yet in the market. When the dust settled in 2029, the S&P500 lost 22.6% of its value, eradicating ½ trillion dollars in value.
Dot-Com Bubble Burst (2000). Thirteen years later, the rapid rise of dot-com stocks far exceeded their value, and the bubble burst in March 2000. The slide finally ended in October 2002, when the NASDAQ lost almost 80% of its value (nearly $5 trillion collars).
The Global Financial Crisis (2008). Six years later, arising from the subprime loan crisis, America experienced the worst depression since the Great Depression. On 9/29/08, the market fell 777 points and ended approximately 9/16/08 when the government bailed out AIG insurance company, stabilizing the NYSE, which had dropped over 50%.
COVID-19 Pandemic Crash (2020). Twelve years later, in February 2020, COVID hit, and the stop market faced such uncertainty that the S&P 500 plunged 34%. What was unique about the collapse was how fast the market reacted. The rebound was finished by August of that year.
Possible June Correction. As I write this article (April 10, 2025), the headlines in the Wall Street Journal read, “Stock Market Today: Nasdaq Slides Nearly 4% After Trump Doesn’t Rule Out Recession.” Jerome Powell, head of the Federal Reserve, “paused the Fed’s rate-cut plans after December’s reduction, but recession worry could force him to start cutting again, risking more inflation, even as tariffs kick in, which will likely cause inflation to climb, too.”
Don’t sit at the crap table rolling the dice without at least having diversificatiion that can tolerate and ride out the shifts in the market. Remember, it is not how much you make while sitting at the table (shown on paper) but how much you walk away with. As the old saying goes, “Those who do not remember the past are condemned to repeat it.”
Graham’s Four Guiding Principles
1. Research Before Buying. “If you know nothing about a stock, except that its price has gone up or ‘everybody’ is buying it, you’re not investing; you’re speculating. The intelligent investor does thorough research and makes deliberate, consistent, measurable decisions.”
2. Buying a Business. When you invest in the stock, you own a piece of the business. If the company is not well run, financially secure, and able to weather a bad market, you risk your future on a gut-level feeling.
3. Undisciplined Investors Panic. The markets fluctuate over time, even though they may go up in the long term. Too many amateur investors freak out at a downturn in the market, sell at a loss, and don’t return to the market until it has recovered. True investors purchase for the long term.
According to the MoneyWise website, Warrant Buffet stated one of the secrets to success: People “just don’t realize that all you have to do is just buy a cross-section of America, and they never listen to people like me or read the papers or do anything subsequently. They think that because you can trade, you should trade.”
4. Don’t Consider Loss. Most investors have stars in their eyes and only see the upside in the stock. You must assume history is correct and the market will fluctuate up and down. You’re not a good investor if you don’t consider how much you can lose in making your decisions.
Diversification
The way professionals protect against down markets and bad investments is by diversification. But, at the extreme, you would be wiped out if you had 100% of your assets in one company and that company went under. Similarly, you could be poor if you had 100% of your investments in stocks and the market tumbled. Therefore, genuinely wealthy people diversify, having a percentage in stock and bonds, sometimes in other assets.
Bill Graham and Warren Buffer favor having 25% of your assets in stocks and 25% in bonds. The other 50% is divided between stocks and bonds, the percentage varying depending on whether you are in a bull or a bear market and the interest rate paid on bonds. The traditional long-term rule was 60% in stock and 40% in bods, but that now depends on current economic circumstances.
Since WWII, there have been times when the market was up almost 20% in a year, but also less frequent times when the market was down almost as much. On average, the market produced over the last three decades has produced a 10% annual return (six to seven percent if adjusted for inflation). In March 2025 (as I write this article), the 10-year bond yield is almost four percent; newspapers speculate there might be a recession because of trade wars. Are you willing to risk a 6% (and much higher) return vs. a guaranteed safe 4% in the bond market, regardless of the economy? You must balance all these factors in your diversified investments.
Instead of investing in stocks and bonds, you can invest in mutual funds in a diversified portfolio. There are both managed funds, where managers use their skills and computer programs to select what they think are the best stocks in which to invest. Alternatively, low-cost index funds select all or a portion of socks on some index, thereby requiring only administrative fees. (The last paragraph in this newsletter discusses this issue in more detail.)
Are You in a Bull or Bear Market
Suppose you are lucky enough to invest at the beginning of a long bull market. In that case, almost any good companies you pick will increase value with the general market. Nobody has ever been able to time the market, no matter how good of a professional they think they are. So, you likely can’t do better.
How do you know if you are in a bull or a bear market and if the end is near? You don’t. However, some warning signs may provide general guidelines.
1. P/E Ratios. The price of a stock divided by its earnings gives the price-to-earnings ratio, typically called the “PE.” Historically, the average P/E ratio is around 20 to 25. Anything below that amount would be considered a good investing ratio, but anything above that amount would be riskier. In using such a broad brush, it is important to understand that different industries may have different PE ratios.
In March 2025, Tesla stock’s PE was 117 but was as high as 940 for a short time. The issue becomes whether the company’s value warrants such sums or whether investors are speculating on future earnings without regard to value.
2. Buffett Ratio. Warren Buffet uses a broader gauge: the total US stock values divided by the gross domestic product (GDP). If the ratios get too high, Buffets expects a paltry return (and many speculate that is why he is now (2025) sitting on 1/3 of a trillion dollars in cash in his fund.)
There are many prudent ways to invest in the market. One method is called The Ladder, where instead of investing your whole $1000,000 in one stock, you invest, say, $10,000 a month for 10 months in the same stock.
Pick Quality Stocks
If you want to speculate, put aside money you can afford to lose and gamble. You can buy initial public offerings, penny stocks, or whatever since you know you are wagering against the odds. However, if you want to invest, do some research first.
In the old days (not quite back in the horse and buggy era, but before desktop computers), you had to read company annual reports and use a calculator to make reliable evaluations. Now, with the internet, it is easy. The experts research for you, and it’s free. Google the company’s performance and assessment from four or six websites, and if they are all saying the same thing, then they are probably correct.
You should be in good shape if you have picked quality stocks and diversified your investments over the long term. Don’t panic over market fluctuations; your stocks will rebound when the market rebounds.
Neither you nor I have the skills, resources, and time to thoroughly analyze our stock decisions like the professionals. Still, it helps to look at the “big boys” with $1 billion budget and know how they analyze stocks. While we can’t do the same, it does tell use the kind of research that is done before major purchases. It is far from the old game, of, “Well, that stock sounded good today, maybe I should buy some.”
According to the Wall Street Journal article (5-4-25), when Warren Buffet bought Apple in 2016, he had his managers look for a stock that meet three criteria.
1. The stock has to be reasonably priced (P/E ratio of 16 or less).
2. Be 90% sure the stock would generate higher earnings over the next five years.
3. Be 50% sure the company would grow by at least 7% per annum for the next five years.
When in Doubt
When Warren Buffett dies, except for a small portion, he’s leaving to his children, and the bulk of his assets go to a charitable trust. Warrant Buffet told his children that it is tough today to compete with mutual funds and that they should invest all their money in the S&P 500. The world’s greatest investor passes this advice on to his children, and I suggest there is a great deal of wisdom therein.
Mr. Buffet made his decision based on three factors. First, he believes in the quality and performance of the American economy, so investing through diversification is investing in that economy. Second, Buffett says that low-cost index funds have such a low fee that managed funds almost can’t compete. If your managed fund earns a 7% annual return, but yearly costs eat up 2% of that amount, your return is only 5%. However, if that amount was the indexed SP500 fund with only a ¾% management fee and earning 7%, you are far ahead. (1.5% richer each year–compounded). Lastly, Mr. Buffet feels that too few managers lack the skills today to beat the SP500.
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Ted is a retired attorney, so he is writing only as a layperson. This article provides general information only and should not be considered as specific advice for any particular situation. It is provided without express or implied warranties of any kind, including but not limited to implied warranties or merchantability or fitness for a particular purpose. If you have a specific problem, consult a CPA, attorney, or doctor for advice. Sorry, my attorneys made me say all that!