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Value of information in competitive economies with incomplete markets

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  • Gottardi, Piero
  • Rahi, Rohit

Abstract

A substantial literature addresses the negative eect on welfare of the release of information in a competitive market economy. We show that the value of information in this setting is typically positive if asset markets are suciently incomplete. More specically, for any competitive equilibrium of a generic economy, we can nd a ner information structure such that an allocation that is resource feasible and measurable with respect to this information ex- post Pareto dominates the given equilibrium allocation.

Suggested Citation

  • Gottardi, Piero & Rahi, Rohit, 2007. "Value of information in competitive economies with incomplete markets," LSE Research Online Documents on Economics 4749, London School of Economics and Political Science, LSE Library.
    • Handle: RePEc:ehl:lserod:4749
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    Cited by:

    1. Beker, Pablo F. & Cuevas, Conrado, 2018. "The social value of information in economies with mandatory savings," The Warwick Economics Research Paper Series (TWERPS) 1152, University of Warwick, Department of Economics.
    2. Rahi, Rohit, 2021. "Information acquisition with heterogeneous valuations," Journal of Economic Theory, Elsevier, vol. 191(C).
    3. Rahi, Rohit & Zigrand, Jean-Pierre, 2018. "Information acquisition, price informativeness, and welfare," Journal of Economic Theory, Elsevier, vol. 177(C), pages 558-593.
    4. Rahi, Rohit, 2019. "Information acquisition with heterogeneous valuations," LSE Research Online Documents on Economics 118929, London School of Economics and Political Science, LSE Library.
    5. Piero Gottardi & Rohit Rahi, 2013. "Risk sharing and retrading in incomplete markets," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 54(2), pages 287-304, October.
    6. Piotr Denderski & Christian Stoltenberg, 2015. "On Positive Value of Information in Risk Sharing," Tinbergen Institute Discussion Papers 15-074/VI, Tinbergen Institute.
    7. Cristian Ionescu, 2012. "Incomplete Markets and Financial Instability. The Role of Information," Annals of the University of Petrosani, Economics, University of Petrosani, Romania, vol. 12(1), pages 141-150.
    8. Rahi, Rohit & Zigrand, Jean-Pierre, 2018. "Information acquisition, price informativeness and welfare," LSE Research Online Documents on Economics 118935, London School of Economics and Political Science, LSE Library.

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    More about this item

    Keywords

    competitive equilibrium; incomplete markets; value of information;
    All these keywords.

    JEL classification:

    • D52 - Microeconomics - - General Equilibrium and Disequilibrium - - - Incomplete Markets
    • D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General
    • D60 - Microeconomics - - Welfare Economics - - - General

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