investing

The World's Greatest Investors Share a Common Trait

There's a key difference in how the average investor and icons like Peter Lynch and Warren Buffett approach the market. Lynch provides a roadmap for what the best investors do differently.

James "Rev Shark" DePorre·Aug 2, 2025, 10:00 AM EDT

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There is no shortage of information about what is happening in the stock market. Every day, there are stories about what the indexes are doing and endless predictions about what will happen next. Indeed, there is so much information about the market every day that most investors assume it is tremendously important and must consider it when making investment decisions.

Great investors are well-versed in market trends and aware of the prevailing bullish and bearish views. They will have their views about what will happen in the future, but that isn't their primary focus when it comes to making money.

Famed investor Peter Lynch sums up what is most important to great investors:

"I don't believe in predicting markets — I believe in buying great companies. Especially companies that are undervalued and/or underappreciated."

What matters most isn't the stock market but individual stocks. You make significant money by finding great stocks, not by trying to do the impossible and time all the twists and turns in the stock market.

Lynch was the manager of Fidelity's Magellan Fund from 1977 to 1990. During that period, he produced an average annual return of 29.2%. He prioritized individual company analysis over market timing and stressed the importance of undervaluation.

Warren Buffett has a similar approach to the stock market as do most of the greatest investors in history. Their focus is on finding great stocks at an early stage and then building and managing positions in various ways as they develop.

The key difference from the average investor is that people like Lynch and Buffett view the ups and downs of the overall market as an inevitability that creates opportunity. They are not concerned about trying to predict what will happen but are focused on using the changes in market action to enhance their investments..

Lynch and Buffett are skeptical of market predictions primarily because they believe that macroeconomic trends can not be forecasted with any great degree of accuracy. All you need to do is look at the policy mistakes the Fed has made over the years to know that even the most informed experts can't make economic and stock market predictions with any great degree of precision.

Lynch argued that attempting to forecast market movements — whether through economic indicators, interest rate changes, or geopolitical events — was a futile exercise for most investors. Markets are influenced by countless variables, all of which are beyond an individual's control or foresight. Lynch advocated focusing on what investors can control: understanding the businesses of the stocks that they own.

This view of the investment process is based on the belief that stock prices ultimately will reflect a company's underlying performance over time. While short-term market fluctuations might be driven by sentiment or external events, long-term returns are tied to a company's earnings growth, financial health, and competitive advantages. By concentrating on these fundamentals, Lynch then used market noise and volatility to position for a bigger payoff.

What Makes a Stock Great?

At the heart of Lynch's philosophy is the idea of investing in "great companies." But what defines greatness? For Lynch, great companies exhibit several key characteristics:

Strong Fundamentals: These include consistent revenue and earnings growth, high return on equity, and manageable debt levels.

Competitive Advantages: Companies with durable moats — such as unique products, strong brand loyalty, or cost advantages — are better positioned to sustain profitability.

Understandable Businesses: Lynch famously advised investors to "know what you own." He preferred companies with straightforward business models that he could easily comprehend, often drawn from everyday observations such as a retailer with growing foot traffic or a product gaining popularity.

Lynch categorized investments into types like "stalwarts" (large, stable companies with moderate growth), "fast growers" (smaller companies with high growth potential), and "turnarounds" (distressed companies poised for recovery). Each category required a tailored approach, but all shared the common thread of being fundamentally sound businesses.

The Power of Undervalued and Underappreciated Stocks

What set Lynch apart from other investors was his ability to find "undervalued and/or underappreciated" stocks. An undervalued company trades at a price below its intrinsic value, often due to temporary setbacks, market overreactions, or lack of analyst coverage. Underappreciated companies may be overlooked because they operate in unglamorous industries or haven't yet caught the attention of Wall Street. Lynch's knack for finding these hidden gems was legendary.

Another great investor who used a methodology to find great stocks at the right time is William J. O'Neil, who founded Investors Business Daily. O'Neil used a formula called CANSLIM to help him identify stocks that had the right mix of variables to become stars. His criteria was different than Lynch's but both were focused on fundamental considerations rather than market predictions.

Keys to Stock Picking

Investors can apply this stock picking philosophy by:

Focusing on Fundamentals: Use financial statements to assess a company's health, prioritizing metrics like earnings growth, free cash flow, and debt-to-equity ratios.

Seeking Undervalued Opportunities: Look for sectors or companies temporarily out of favor. For example, in 2025, industries like renewable energy, biotechnology, or small-cap tech may present undervalued opportunities due to market rotations or macroeconomic concerns.

Personal Experience: Lynch was well known for using his personal experiences — such as noticing a surge in demand for a product — to identify potential investments before they become mainstream.

Avoiding Market Noise: With the proliferation of financial media and social platforms like X, it's easy to get swept up in market hype and to lose sight of fundamentals and valuation. While aggressively trading an emotional market can produce significant profits, real wealth is built by finding great stocks to hold for longer periods.

When investors ignore the pressure to engage in market predictions and focus instead on great companies, they can build wealth with a disciplined, longer-term approach. Market volatility is a benefit, not a negative, when viewed in this way.

At the time of publication, Rev Shark had no positions in any securities mentioned.