Jason Zweig latest masterpiece
From financial history and from my own experience, I long ago concluded that regression to the mean is the most powerful law in financial physics: Periods of above-average performance are inevitably followed by below-average returns, and bad times inevitably set the stage for surprisingly good performance.
But humans perceive reality in short bursts and streaks, making a long-term perspective almost impossible to sustain – and making most people prone to believing that every blip is the beginning of a durable opportunity.
My role, therefore, is to bet on regression to the mean even as most investors, and financial journalists, are betting against it. I try to talk readers out of chasing whatever is hot and, instead, to think about investing in what is not hot. Instead of pandering to investors’ own worst tendencies, I try to push back. My role is also to remind them constantly that knowing what not to do is much more important than what to do. Approximately 99% of the time, the single most important thing investors should do is absolutely nothing.
There’s no smugness or self-satisfaction in this sort of role. The competitive and psychological pressure to give bad advice is so intense, the demand to produce noise is so unremitting, that I often feel like a performer onstage before a hostile audience that is forever hissing and throwing rotten fruit at him. It’s hard for your head to swell when you spend so much of your time ducking.
On the other hand, you can’t be a columnist for The Wall Street Journal without a thick skin. I have been called an ignoramus, an idiot and dozens of epithets unprintable in a family newspaper;
accused of front-running or trading ahead of my own columns;
assailed as being in the pockets of short-sellers betting against regular investors; described as being a close friend of a person I’ve never met in my entire life;
decried as being biased in favor of high-frequency traders and as being biased against them;
and told, almost every week, that I lack even the most basic understanding of how the financial markets work.
The perennial refrain from critics is: You just don’t get it. Internet stocks / housing / energy prices / financial stocks / gold / silver / bonds / high-yield stocks / you-name-it can’t go down. This time is different, and here’s why.
But this time is never different. History always rhymes. Human nature never changes. You should always become more skeptical of any investment that has recently soared in price, and you should always become more enthusiastic about any asset that has recently fallen in price. That’s what it means to be an investor.