The Roman philosopher, playwright, statesman and occasional satirist Lucius Annaeus Seneca wasn’t talking about the stock market when he wrote that “time discovers truth,” but he could have been. In the long run a stock price will reflect a company’s (true) intrinsic value. In the short run the pricing is basically random. Here are two real-life examples:
Let’s say you had the smarts to buy Microsoft in November 1992. It would have been a brilliant decision in the long run — the software giant’s stock has gone up manyfold since. But nine months later, in August 1993, that call did not look so brilliant: Microsoft shares had declined 25 percent in less than a year. In fact, it would have taken you 18 months, until May 1994, for this purchase to break even. Eighteen months of dumbness?
In the early ’90s the PC industry was still in its infancy. Microsoft’s DOS and Windows operating systems were de facto standards. Outside of Macs and a tiny fraction of IBM computers, every computer came preinstalled with DOS and Windows. Microsoft had a pristine balance sheet and a brilliant co-founder and CEO who would turn mountains upside down to make sure the company succeeded. The above sentence is infested with hindsight — after all, that was almost 30 years ago. But Microsoft clearly had an incredible moat, which became wider with every new PC sold and every new software program written to run on Windows.
Here is another example. GoPro is a maker of video cameras used by surfers, skiers and other extreme sports enthusiasts. If you had bought the stock soon after it went public, in 2014, you would have paid $40 a share for a $5.5 billion–market-cap company earning about $100 million a year — a price-earnings ratio of about 55. Your impatience would, however, have been rewarded: The stock more than doubled in just a few short months, hitting $90.
Would it have been a good decision to buy GoPro? The company makes a great product — I own one. But GoPro has no moat. None. Most components that go into its cameras are commodities. There are no barriers to entry into the specialized video camera segment. Most important, there are no switching costs for consumers. Investors who bought GoPro after its IPO paid a huge premium for the promise of much higher earnings from a company that might or might not be around five years later.
What is even more interesting is that some of those buyers were then selling to even bigger fools who bought at double the price a few months later. GoPro was a momentum stock that was riding a wave about to break. One year later, GoPro’s revenues and stock price had collapsed.
These two examples bring us to the nontrivial topics of complex systems and nonlinearity. My favorite thinker, Nassim Taleb, wrote the following in his book Antifragile: Things That Gain from Disorder: “Complex systems are full of interdependencies — hard to detect — and nonlinear responses. ‘Nonlinear’ means that when you double the dose of, say, a medication, or when you double the number of employees in a factory, you don’t get twice the initial effect, but rather a lot more or a lot less.”
The stock market is a complex system where in the short term there are few if any interdependencies between decisions and outcomes. In the short run stock prices are driven by thousands of random variables. Stock market participants have different risk tolerances and emotional aptitudes, and diverse time horizons ranging from milliseconds (for high-speed traders) to years (for long-term investors).
In other words, predicting where a stock price will be in a day, a month or even a year is not much different from prognosticating whether the ball on a roulette wheel will land on red or black. In the longer run, however, good decisions should pay off because fundamentals will shine through — just as was the case with buying Microsoft in 1992 and not buying GoPro in 2014. But in the short run there is no correlation between good decisions and results. None!
Whenever you look at your portfolio, think of the Microsoft and GoPro examples above. The performance of your stocks in the short run tells you absolutely nothing about what you own or about the quality of your decisions. You may own a portfolio of Microsofts, and its value is still going down because at this juncture the market doesn’t care about Microsofts. Or maybe you stuffed your retirement fund with overpriced fads that may not be around a year from now. But in the longer run, which always lies out there past the short run, time discovers truth, as Seneca said.
Read this before you buy your next stock
Key takeaways
- In investing, discovering truth takes time — short-term stock performance often has no correlation with decision quality.
- Microsoft’s 1992 example shows how great businesses may look like bad calls in the short run but compound wealth in the long run.
- GoPro illustrates the danger of paying high prices for companies without moats — short-term momentum can mask weak fundamentals.
- The stock market is a complex, nonlinear system where randomness dominates short-term outcomes.
- Patience, discipline, and focus on fundamentals allow truth — intrinsic value — to shine through over years, not months.
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