Fall 2010
Why do investors so often act against their own best interests and sabotage their investment plan? The answer lies in the relatively new science of behavioral finance.
For the past twenty years, DALBAR Inc., an investment research firm, has published its annual Quantitative Analysis of Investor Behavior. The results, for any investor, are sobering. For the 20 years ending December 31, 2009, the S&P 500 index had an average annual return of 8.20%. During the same period, the annual return for equity fund investors averaged just 3.17%. Fees can account for some of the difference but the rest is credited to investor behavior. To paraphrase the comic strip character Pogo – we have seen the enemy and he is us.

