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Increased Risk-Bearing with Background Risk

Author

Listed:
  • Gollier Christian

    (U of Toulouse)

  • Schlee Edward E

    (Arizona State University)

Abstract

Analyses of risk-bearing often assume that agents face only one risk. Agents however usually face several risks and the interaction between them can affect the willingness to bear any one of them. We consider how the introduction of background risk affects the comparative statics predictions of distribution changes in the standard two asset portfolio model. We show that such predictions are fairly robust, no matter what the correlation between the two risks. We consider changes in the conditional distributions of the risky asset's return; and changes in the marginal distribution of the asset's return. For the first question, a version of Gollier's (1995) Central Riskiness order is sufficient and necessary to increase risk-bearing. For the second question, Monotone Likelihood Ratio improvements are sufficient and necessary. Many of our proofs illustrate the "basis" approach to comparative statics under uncertainty.

Suggested Citation

  • Gollier Christian & Schlee Edward E, 2006. "Increased Risk-Bearing with Background Risk," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 6(1), pages 1-31, March.
    • Handle: RePEc:bpj:bejtec:v:topics.6:y:2006:i:1:n:3
    DOI: 10.2202/1534-598X.1249
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    References listed on IDEAS

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    1. D. Kira & W. T. Ziemba, 1980. "The Demand for a Risky Asset," Management Science, INFORMS, vol. 26(11), pages 1158-1165, November.
    2. Peter C. Fishburn & R. Burr Porter, 1976. "Optimal Portfolios with One Safe and One Risky Asset: Effects of Changes in Rate of Return and Risk," Management Science, INFORMS, vol. 22(10), pages 1064-1073, June.
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    Cited by:

    1. Wagener, Andreas & Zenker, Juliane, 2018. "Decoupled but not neutral: The effects of stochastic transfers on investment and incomes in rural Thailand," TVSEP Working Papers wp-008, Leibniz Universitaet Hannover, Institute for Environmental Economics and World Trade, Project TVSEP.
    2. Huang, Hung-Hsi & Wang, Ching-Ping, 2013. "Portfolio selection and portfolio frontier with background risk," The North American Journal of Economics and Finance, Elsevier, vol. 26(C), pages 177-196.
    3. Wagener, Andreas & Zenker, Juliane, 2015. "Stochastic Transfers, Risky Investment and Incomes: Evidence from an Income Guarantee Program in Thailand," Hannover Economic Papers (HEP) dp-562, Leibniz Universität Hannover, Wirtschaftswissenschaftliche Fakultät.
    4. Andreas Wagener & Juliane Zenker, 2021. "Decoupled but Not Neutral: The Effects of Counter‐Cyclical Cash Transfers on Investment and Incomes in Rural Thailand†," American Journal of Agricultural Economics, John Wiley & Sons, vol. 103(5), pages 1637-1660, October.
    5. Hallegatte,Stephane & Bangalore,Mook & Jouanjean,Marie Agnes, 2016. "Higher losses and slower development in the absence of disaster risk management investments," Policy Research Working Paper Series 7632, The World Bank.

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    More about this item

    Keywords

    Comparative statics; uncertainty; risk-bearing; background risk; monotone likelihood ratio order; central riskiness; single-crossing property; multivariate risk;
    All these keywords.

    JEL classification:

    • D8 - Microeconomics - - Information, Knowledge, and Uncertainty

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