NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Investor Sophistication and Capital Income Inequality

Marcin Kacperczyk, Jaromir B. Nosal, Luminita Stevens

NBER Working Paper No. 20246
Issued in June 2014
NBER Program(s):   AP   EFG   IFM

What contributes to the growing income inequality across U.S. households? We develop an information- based general equilibrium model that links capital income derived from financial assets to a level of investor sophistication. Our model implies income inequality between sophisticated and unsophisticated investors that is growing in investors' aggregate and relative sophistication in the market. We show that our model is quantitatively consistent with the data from the U.S. market. In addition, we provide supporting evidence for our mechanism using a unique set of cross-sectional and time-series predictions on asset ownership and stock turnover.

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Document Object Identifier (DOI): 10.3386/w20246

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