Investment Strategist
Investment Strategist
Behavioral Finance and Irrational Investing
In 1996, then-Federal Reserve Chairman Alan
Greenspan coined the term “irrational exuberance"
in an address to describe investors’ attitudes
towards what he viewed as an overvalued stock
market. It is often used to describe the impact
that manic speculation and emotional decision-
making can have on the financial markets. The
soaring prices of “dot-com" stocks in the late
1990s and early 2000s and housing in 2007 and
2008 provided textbook examples of irrational
exuberance in action. But while the subsequent bursting of those bubbles resulted in significant
financial losses for many investors, will those same investors learn from their mistakes the next
time a boom and bust period occurs.
“Buy low, sell high" may sound like a simple formula for investing success, but history has
proven that, for many, adhering to this precept is often easier said than done. In recent years, the
field of behavioral finance has emerged to help explain why investors act the way they do, studying
such behaviors as herd mentality, overconfidence, excessive aversion to risk, and bias towards
recent market results. Any of these behaviors can be very damaging to a portfolio.
What Is Behavioral Finance.
The efficient market hypothesis states that it is impossible to beat the market because stock
market efficiency causes existing share prices to incorporate and reflect all known information.
It assumes that investors behave in a rational, predictable manner. However, this theory largely
ignores emotional biases (either on an individual or collective basis) that can lead investors to
make irrational decisions that can cause large fluctuations in the market. Behavioral finance seeks
to explain which psychological and emotional factors influence individuals’ investment decisions.
As you work toward your financial goals, developing an understanding of these factors, removing
emotion from your investment decisions, and not worrying about the short-term individual losses
and gains in your portfolio will make it easier for you to maintain perspective.
Taking the Emotion Out of Investing
The good news is that there are certain measures you can take to help reduce the emotional factor
of investing and help protect your portfolio from the extreme market volatility caused by irrational
exuberance. Adopting a long-term approach, diversifying your portfolio, and utilizing the power of
dollar-cost averaging are all simple ways to be less emotional in your investment decisions.
March 2014
SNINS0214