An Economic Measure of Diversification Benefits

Lingfeng Li

Yale School of Management Working Papers from Yale School of Management

Abstract: In this paper, we develop a utility based economic measure for diversification benefits, calculated as the maximum premium that an investor is willing to pay for holding a more diversified portfolio. The utility based economic measure allows one to evaluate the expansion of the investment opportunity set by combining the information in both risk and return properties. It also offers a flexible framework to examine how investors with different tolerances for risk may respond to the expansion of the investment opportunity set by combining the information in both risk and return properties. It also offers a flexible framework to examine how investors with different tolerances for risk may respond to the expansion of the investment opportunity set. This measure is contrasted with the results of mean-variance spanning tests. Empirical analysis shows that investors enjoy substantial diversification benefits by adding emerging stock markets and major bond markets to the existing portfolio of G7 stock markets. Investors' risk tolerance affects their evaluation of new assets. Short-sale constraints reduce, but do not eliminate, diversificaton benefits.

Keywords: Measuring Diversification Benefits; Asset Allocation; Short Sale Constraint (search for similar items in EconPapers)
Date: 2003-05-01, Revised 2003-07-01
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