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Capital market equilibrium with heterogeneous investors

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  • Haim Shalit
  • Shlomo Yitzhaki

Abstract

As a two-parameter model that satisfies stochastic dominance, the mean-extended Gini model is used to build efficient portfolios. The model quantifies risk aversion heterogeneity in capital markets. In a simple Edgeworth box framework, we show how capital market equilibrium is achieved for risky assets. This approach provides a richer basis for analysing the pricing of risky assets under heterogeneous preferences. Our main results are: (1) identical investors, who use the same statistic to represent risk, hold identical portfolios of risky assets equal to the market portfolio; and (2) heterogeneous investors as expressed by the variance or the extended Gini hold different risky assets in portfolios, and therefore no one holds the market portfolio.

Suggested Citation

  • Haim Shalit & Shlomo Yitzhaki, 2009. "Capital market equilibrium with heterogeneous investors," Quantitative Finance, Taylor & Francis Journals, vol. 9(6), pages 757-766.
    • Handle: RePEc:taf:quantf:v:9:y:2009:i:6:p:757-766
    DOI: 10.1080/14697680902795226
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    References listed on IDEAS

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    Cited by:

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    2. Doron Nisani, 2023. "On the General Deviation Measure and the Gini coefficient," International Journal of Economic Theory, The International Society for Economic Theory, vol. 19(3), pages 599-610, September.
    3. Shlomo Yitzhaki, 2016. "A Potential Contradiction Between Economic Theory and Applied Finance," Review of Economics & Finance, Better Advances Press, Canada, vol. 6, pages 13-27, May.
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    6. Frank Hespeler & Haim Shalit, 2018. "Mean-Extended Gini Portfolios: A 3D Efficient Frontier," Computational Economics, Springer;Society for Computational Economics, vol. 51(3), pages 731-740, March.

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