“The investor’s chief problem—and even his worst enemy—is likely to be himself,” once quipped the great Benjamin Graham.
The truth of Graham’s observation is seen in the consistent pattern of mutual fund investors to self-destruct.
Over the past 30 years, the typical stock mutual fund investor’s performance has badly lagged the S&P 500 index (^GSPC), according to Dalbar’s Quantitative Analysis of Investor Behavior (QAIB) report. While the average mutual fund investor earned 3.69%, the S&P 500 earned 11.11%. What were the chief causes behind the significant undeperformance?
The underlying problem wasn’t the 1987 stock market crash (DIA), the 2000-2002 dot-com bursting (QQQ), the 2008-09 financial crisis (XLF), or poor economic conditions – but rather – investor misbehavior. People chase historical performance, buy the wrong things at the wrong time, and have a knack for poor financial decision making.
Curiously, one of the main advantages of mutual fund investing is supposed to be professional money management by seasoned pros. But people have found a plethora of ways to mess up even that.
Unfortunately, people who buy individual stocks aren’t that much better than people who buy mutual funds.
In a study conducted at the height of the dot-com frenzy, by professors Brad M. Barber and Terrance Odean, they found:
1. Households trade common stocks frequently. The average household turns over more than 75 percent of its common stock portfolio annually.
2. Trading costs are high. The average round-trip trade in excess of $1,000 costs three percent in commissions and one percent in bid-ask spread.
I recently caught up with Terrance Odean, who continues his groundbreaking research about investors’ habits at the University of California at Berkeley. In my video interview with Odean, he talks about a 14-year study of Asian daytraders and how it relates to individual investors in the U.S. and elsewhere.
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