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Asymmetric Information, Nonadditive Expected Utility, and the Information Revealed by Prices: An Example

Author

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  • Jean-Marc Tallon

    (M.A.D. - UP1 - Université Paris 1 Panthéon-Sorbonne)

Abstract

I develop a simple example of a model in which agents have asymmetric information, and preferences that are represented by a nonadditive expected utility function. The a priori uninformed agent, after observing the equilibrium price, has conditional beliefs that remain nonadditive. Then, even when the equilibrium price function is fully revealing (i.e., one-to-one), it may be worth-while for an a priori uninformed agent to buy `redundant' private information if he is more confident in that information than in that revealed by the price system.

Suggested Citation

  • Jean-Marc Tallon, 1998. "Asymmetric Information, Nonadditive Expected Utility, and the Information Revealed by Prices: An Example," Post-Print halshs-00502491, HAL.
    • Handle: RePEc:hal:journl:halshs-00502491
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    Cited by:

    1. Antoine Billot & Sujoy Mukerji & Jean-Marc Tallon, 2020. "Market Allocations under Ambiguity: A Survey," Revue économique, Presses de Sciences-Po, vol. 71(2), pages 267-282.
    2. Philipp K. Illeditsch & Jayant V. Ganguli & Scott Condie, 2021. "Information Inertia," Journal of Finance, American Finance Association, vol. 76(1), pages 443-479, February.
    3. Le Van, Cuong & Navrouzoglou, Paulina & Vailakis, Yiannis, 2019. "On endogenous formation of price expectations," Games and Economic Behavior, Elsevier, vol. 115(C), pages 436-458.
    4. repec:esx:essedp:719 is not listed on IDEAS
    5. Alberto Naudon & Matías Tapia & Felipe Zurita, 2004. "Ignorance, Fixed Costs, and the Stock-Market Participation Puzzle," Documentos de Trabajo 262, Instituto de Economia. Pontificia Universidad Católica de Chile..
    6. Jeleva, Meglena & Tallon, Jean-Marc, 2016. "Ambiguïté, comportements et marchés financiers," L'Actualité Economique, Société Canadienne de Science Economique, vol. 92(1-2), pages 351-383, Mars-Juin.
    7. repec:esx:essedp:770 is not listed on IDEAS
    8. Yu, Edison G., 2018. "Dynamic market participation and endogenous information aggregation," Journal of Economic Theory, Elsevier, vol. 175(C), pages 491-517.
    9. Condie, Scott & Ganguli, Jayant, 2017. "The pricing effects of ambiguous private information," Journal of Economic Theory, Elsevier, vol. 172(C), pages 512-557.
    10. Kostas Koufopoulos & Roman Kozhan, 2016. "Optimal insurance under adverse selection and ambiguity aversion," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 62(4), pages 659-687, October.
    11. repec:esx:essedp:720 is not listed on IDEAS
    12. Mukerji, Sujoy & Tallon, Jean-Marc, 2004. "Ambiguity aversion and the absence of wage indexation," Journal of Monetary Economics, Elsevier, vol. 51(3), pages 653-670, April.
    13. Scott Condie & Jayant V. Ganguli, 2011. "Ambiguity and Rational Expectations Equilibria," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 78(3), pages 821-845.
    14. J L Ford & David Kelsey & W Pang, 2005. "Ambiguity in Financial Markets: Herding and Contrarian Behaviour," Discussion Papers 05-11, Department of Economics, University of Birmingham.
    15. Scott Condie & Jayant Ganguli, 2011. "Informational efficiency with ambiguous information," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 48(2), pages 229-242, October.
    16. Ganguli, Jayant & Condie, Scott, 2012. "The pricing effects of ambiguous private information," Economics Discussion Papers 5631, University of Essex, Department of Economics.
    17. Rigotti, Luca & Shannon, Chris, 2012. "Sharing risk and ambiguity," Journal of Economic Theory, Elsevier, vol. 147(5), pages 2028-2039.

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    Keywords

    Nonadditive Expected Utility;

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