The Genetics of Investment Biases
University of Miami - Department of Finance
University of Washington - Michael G. Foster School of Business
August 20, 2013
For a long list of investment "biases," including lack of diversification, excessive trading, and the disposition effect, we find that genetic differences explain up to 45% of the remaining variation across individual investors, after controlling for observable individual characteristics. The evidence is consistent with a view that investment biases are manifestations of innate and evolutionary ancient features of human behavior. We find that work experience with finance reduces genetic predispositions to investment biases. Finally, we find that even genetically identical investors, who grew up in the same family environment, often differ substantially in their investment behaviors due to individual-specific experiences or events.
Number of Pages in PDF File: 48
Keywords: Household finance, behavioral finance, individual investor behavior
Date posted: February 23, 2012 ; Last revised: August 21, 2013
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