IDEAS home Printed from https://ideas.repec.org/p/ven/wpaper/2008_16.html
   My bibliography  Save this paper

Information Sharing Networks in Oligopoly

Author

Listed:
  • Sergio Currarni

    (Department of Economics, University Of Venice C� Foscari)

  • Francesco Feri

    (University of Innsbruck)

Abstract

We study the incentives of oligopolistic firms to share private information on demand parameters. Differently from previous studies, we consider bilateral sharing agreements, by which firms commit at the ex-ante stage to truthfully share information. We show that if signals are i.i.d., then pairwise stable networks of sharing agreements are either empty or made of fully connected components of increasing size. When linking is costly, non complete components may emerge, and components with larger size are less densly connected than components with smaller size. When signals have different variances, incomplete and irregular network can be stable, with firms observing high variance signals acting as "critical nodes". Finally, when signals are correlated, the empty network may not be pairwise stable when the number of firms and/or correlation are large enough.

Suggested Citation

  • Sergio Currarni & Francesco Feri, 2008. "Information Sharing Networks in Oligopoly," Working Papers 2008_16, Department of Economics, University of Venice "Ca' Foscari".
  • Handle: RePEc:ven:wpaper:2008_16
    as

    Download full text from publisher

    File URL: https://www.unive.it/web/fileadmin/user_upload/dipartimenti/DEC/doc/Pubblicazioni_scientifiche/working_papers/2008/WP_DSE_currarini_feri_16_08.pdf
    Download Restriction: no
    ---><---

    Other versions of this item:

    References listed on IDEAS

    as
    1. 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.
    2. 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.
    3. Gal-Or, Esther, 1985. "Information Sharing in Oligopoly," Econometrica, Econometric Society, vol. 53(2), pages 329-343, March.
    4. Vives, Xavier, 1984. "Duopoly information equilibrium: Cournot and bertrand," Journal of Economic Theory, Elsevier, vol. 34(1), pages 71-94, October.
    5. Lode Li, 1985. "Cournot Oligopoly with Information Sharing," RAND Journal of Economics, The RAND Corporation, vol. 16(4), pages 521-536, Winter.
    6. Alison J. Kirby, 1988. "Trade Associations as Information Exchange Mechanisms," RAND Journal of Economics, The RAND Corporation, vol. 19(1), pages 138-146, Spring.
    7. Raith, Michael, 1996. "A General Model of Information Sharing in Oligopoly," Journal of Economic Theory, Elsevier, vol. 71(1), pages 260-288, October.
    8. 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.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. William Novshek & Lynda Thoman, 2006. "Capacity Choice and Duopoly Incentives for Information Sharing," Southern Economic Journal, John Wiley & Sons, vol. 72(4), pages 808-825, April.
    2. Duarte Brito & Pedro Pereira & João Vareda, 2016. "Can More Information About Rivals' Costs Decrease Welfare?," Manchester School, University of Manchester, vol. 84(2), pages 251-269, March.
    3. Sergio Currarini & Francesco Feri, 2007. "Bilateral Information Sharing in Oligopoly," Working Papers 2007_21, Department of Economics, University of Venice "Ca' Foscari".
    4. António Brandão & Joana Pinho, 2015. "Asymmetric Information And Exchange Of Information About Product Differentiation," Bulletin of Economic Research, Wiley Blackwell, vol. 67(2), pages 166-185, April.
    5. Qiu, Larry D. & Zhou, Wen, 2006. "International mergers: Incentives and welfare," Journal of International Economics, Elsevier, vol. 68(1), pages 38-58, January.
    6. Medín, J. Andrés Faíña & Rodríguez, Jesús López & Rodríguez, José López, 2003. "Information Exchanges in Cournot Duopolies," Revista Brasileira de Economia - RBE, EPGE Brazilian School of Economics and Finance - FGV EPGE (Brazil), vol. 57(1), January.
    7. Myatt, David P. & Wallace, Chris, 2015. "Cournot competition and the social value of information," Journal of Economic Theory, Elsevier, vol. 158(PB), pages 466-506.
    8. Sjaak Hurkens, 2014. "Bayesian Nash equilibrium in “linear” Cournot models with private information about costs," International Journal of Economic Theory, The International Society for Economic Theory, vol. 10(2), pages 203-217, June.
    9. Lagerlof, Johan N.M., 2007. "Insisting on a non-negative price: Oligopoly, uncertainty, welfare, and multiple equilibria," International Journal of Industrial Organization, Elsevier, vol. 25(4), pages 861-875, August.
    10. Goltsman, Maria & Pavlov, Gregory, 2014. "Communication in Cournot oligopoly," Journal of Economic Theory, Elsevier, vol. 153(C), pages 152-176.
    11. Mariana Cunha & Paula Sarmento & Hélder Vasconcelos, 2014. "Uncertain Efficiency Gains and Merger Policy," FEP Working Papers 527, Universidade do Porto, Faculdade de Economia do Porto.
    12. Le Pape, Nicolas & Zhao, Kai, 2014. "Horizontal mergers and uncertainty," Economics - The Open-Access, Open-Assessment E-Journal (2007-2020), Kiel Institute for the World Economy (IfW Kiel), vol. 8, pages 1-31.
    13. Fabio Tramontana, 2013. "Information exchange in a Cournot duopoly with nonlinear demand function," DEM Working Papers Series 049, University of Pavia, Department of Economics and Management.
    14. Amir, Rabah & Jin, Jim Y. & Troege, Michael, 2010. "Robust results on the sharing of firm-specific information: Incentives and welfare effects," Journal of Mathematical Economics, Elsevier, vol. 46(5), pages 855-866, September.
    15. Eliane Catilina, 2002. "Information Acquisition in Cournot Markets: An (enhanced) two- Stage Approach," Game Theory and Information 0205005, University Library of Munich, Germany.
    16. Cornand, Camille & Dos Santos Ferreira, Rodolphe, 2020. "Cooperation in a differentiated duopoly when information is dispersed: A beauty contest game with endogenous concern for coordination," Mathematical Social Sciences, Elsevier, vol. 106(C), pages 101-111.
    17. Lode Li, 2002. "Information Sharing in a Supply Chain with Horizontal Competition," Management Science, INFORMS, vol. 48(9), pages 1196-1212, September.
    18. Wu, Jianghua & Zhai, Xin & Huang, Zhimin, 2008. "Incentives for information sharing in duopoly with capacity constraints," Omega, Elsevier, vol. 36(6), pages 963-975, December.
    19. Jin, Jim Y., 1996. "A test for information sharing in Cournot oligopoly," Information Economics and Policy, Elsevier, vol. 8(1), pages 75-86, March.
    20. Kirby, Alison J., 2004. "The product market opportunity loss of mandated disclosure," Information Economics and Policy, Elsevier, vol. 16(4), pages 553-577, December.

    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

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ven:wpaper:2008_16. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sassano Sonia (email available below). General contact details of provider: https://edirc.repec.org/data/dsvenit.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.