Experiments show that if you put rats in a maze and give them a jolt of electricity when they go the wrong way, they will eventually go the right way.
OK, we’re smarter than rats. We know better. But we believe what we want to believe. And right now, a majority of those who invest believe the “trend is our friend.”
We forget that what goes up must come down, regardless of how many bonds the Fed buys. It’s a scary world and no amount of irrational investor confidence can keep the market aloft forever.
In the first decade of the new millennium, we lived through two difficult bear markets, each of which chopped stock prices nearly in half. The bear market of 2000 to 2003 was caused by the irrational belief that tech stock prices moved in only one direction. The bear market of 2007 to 2009 was caused by the irrational belief that housing prices moved in only one direction.
So here we are just five years removed from the last bear market and investors are acting as though stock prices move in only one direction. Investors have already forgotten that bubbles burst.