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Bilateral Information Sharing in Oligopoly

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  • Sergio Currarini
  • Francesco Feri

Abstract

We study the problem of information sharing in oligopoly, when sharing decisions are taken before the realization of private signals. Using the general model developed by Raith (1996), we show that if firms are allowed to make bilateral exclusive sharing agreements, then some degree of information sharing is consistent with equilibrium, and is a constant feature of equilibrium when the number of firms is not too small. Our result is to be contrasted with the traditional conclusion that no information is shared in common values situations with strategic substitutes - such as Cournot competition with demand shocks - when firms can only make industry-wide sharing contracts (e.g., a trade association).

Suggested Citation

  • Sergio Currarini & Francesco Feri, 2007. "Bilateral Information Sharing in Oligopoly," Working Papers 2007-15, Faculty of Economics and Statistics, Universität Innsbruck.
    • Handle: RePEc:inn:wpaper:2007-15
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    References listed on IDEAS

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    1. Esther Gal-or, 1986. "Information Transmission—Cournot and Bertrand Equilibria," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 53(1), pages 85-92.
    2. Richard N. Clarke, 1983. "Collusion and the Incentives for Information Sharing," Bell Journal of Economics, The RAND Corporation, vol. 14(2), pages 383-394, Autumn.
    3. Jackson, Matthew O. & Wolinsky, Asher, 1996. "A Strategic Model of Social and Economic Networks," Journal of Economic Theory, Elsevier, vol. 71(1), pages 44-74, October.
    4. Gal-Or, Esther, 1985. "Information Sharing in Oligopoly," Econometrica, Econometric Society, vol. 53(2), pages 329-343, March.
    5. Vives, Xavier, 1984. "Duopoly information equilibrium: Cournot and bertrand," Journal of Economic Theory, Elsevier, vol. 34(1), pages 71-94, October.
    6. Corsetti, Giancarlo & Devereux, Michael P. & Guiso, Luigi & Hassler, John & Saint-Paul, Gilles & Sinn, Hans-Werner & Sturm, Jan-Egbert & Vives, Xavier, 2010. "The European economy," Munich Reprints in Economics 20104, University of Munich, Department of Economics.
    7. Alison J. Kirby, 1988. "Trade Associations as Information Exchange Mechanisms," RAND Journal of Economics, The RAND Corporation, vol. 19(1), pages 138-146, Spring.
    8. Raith, Michael, 1996. "A General Model of Information Sharing in Oligopoly," Journal of Economic Theory, Elsevier, vol. 71(1), pages 260-288, October.
    9. William Novshek & Hugo Sonnenschein, 1982. "Fulfilled Expectations Cournot Duopoly with Information Acquisition and Release," Bell Journal of Economics, The RAND Corporation, vol. 13(1), pages 214-218, Spring.
    10. Xavier Vives, 1990. "Trade Association Disclosure Rules, Incentives to Share Information, and Welfare," RAND Journal of Economics, The RAND Corporation, vol. 21(3), pages 409-430, Autumn.
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    Cited by:

    1. Mark Bagnoli & Susan G. Watts, 2015. "Competitive intelligence and disclosure," RAND Journal of Economics, RAND Corporation, vol. 46(4), pages 709-729, October.

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    More about this item

    Keywords

    Information sharing; oligopoly; networks; Bayesian equilibrium;
    All these keywords.

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

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