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Portfolio Choices in the Presence of Other Risks

Author

Listed:
  • Israel Finkelshtain

    (Department of Agricultural Economics, Hebrew University of Jerusalem, Rehovot, Israel)

  • James A. Chalfant

    (Department of Agricultural Economics, University of California at Davis, Davis, California 95616)

Abstract

The effects of multivariate risk are examined in a model of portfolio choice. The conditions under which portfolio choices are separable from consumption decisions are derived. Unless the appropriate restrictions hold on investors' preferences or on the probability distribution of risks, the optimal portfolio is affected by other risks. This requires generalizing the usual measures of risk aversion. With one risky asset, matrix measures of risk aversion are used to generalize the results of Arrow (1965) and Pratt (1964) concerning the effects of risk aversion and wealth on the optimal portfolio. With two risky assets, the choices made by two investors coincide if and only if their generalized risk-aversion measures are identical. Ross's notion of stronger risk aversion is then used to characterize the effect of risk aversion on the level of investment in the riskier asset.

Suggested Citation

  • Israel Finkelshtain & James A. Chalfant, 1993. "Portfolio Choices in the Presence of Other Risks," Management Science, INFORMS, vol. 39(8), pages 925-936, August.
    • Handle: RePEc:inm:ormnsc:v:39:y:1993:i:8:p:925-936
    DOI: 10.1287/mnsc.39.8.925
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    Citations

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    Cited by:

    1. Dionne, Georges & Li, Jingyuan, 2014. "Comparative Ross risk aversion in the presence of mean dependent risks," Journal of Mathematical Economics, Elsevier, vol. 51(C), pages 128-135.
    2. Crainich, David & Eeckhoudt, Louis & Le Courtois, Olivier, 2017. "Health and portfolio choices: A diffidence approach," European Journal of Operational Research, Elsevier, vol. 259(1), pages 273-279.
    3. Malevergne, Y. & Rey, B., 2009. "On cross-risk vulnerability," Insurance: Mathematics and Economics, Elsevier, vol. 45(2), pages 224-229, October.
    4. Zilberman, David & Buschena, David E., 1990. "What We Know About Decision Making Under Uncertainty And Why We Do Not Use What We Know," 1990 Quantifying Long Run Agricultural Risks and Evaluating Farmer Responses to Risk Meeting, January 28-31, 1990, Sanibel Island, Florida 271535, Regional Research Projects > S-232: Quantifying Long Run Agricultural Risks and Evaluating Farmer Responses to Risk.
    5. Keenan, Donald C. & Snow, Arthur, 2012. "Ross risk vulnerability for introductions and changes in background risk," Journal of Mathematical Economics, Elsevier, vol. 48(4), pages 197-206.
    6. Georges Dionne & Jingyuan Li, 2012. "Comparative Ross Risk Aversion in the Presence of Quadrant Dependent Risks," Cahiers de recherche 1226, CIRPEE.
    7. Smimou, K., 2014. "International portfolio choice and political instability risk: A multi-objective approach," European Journal of Operational Research, Elsevier, vol. 234(2), pages 546-560.
    8. Mickael Beaud & Marc Willinger, 2015. "Are People Risk Vulnerable?," Management Science, INFORMS, vol. 61(3), pages 624-636, March.
    9. Christophe Courbage, 2001. "On Bivariate Risk Premia," Theory and Decision, Springer, vol. 50(1), pages 29-34, February.
    10. Alexei Alexandrov, 2015. "When Should Firms Expose Themselves to Risk?," Management Science, INFORMS, vol. 61(12), pages 3001-3008, December.

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