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Efficiency in decentralized oligopolistic markets

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  • Nava, Francesco

Abstract

The paper analyzes quantity competition in economies in which a network describes the set of feasible trades. A model is presented in which the identity of buyers, of sellers, and of intermediaries is endogenously determined by the trade flows in the economy. The analysis first considers small economies, and provides sufficient conditions for equilibrium existence, a characterization of prices and flows, and some negative results relating welfare to network structure. The second and central part of the analysis considers behavior in large markets, and presents necessary and sufficient conditions on the network structure for equilibria to be approximately efficient when the number of players is large.

Suggested Citation

  • Nava, Francesco, 2015. "Efficiency in decentralized oligopolistic markets," LSE Research Online Documents on Economics 61879, London School of Economics and Political Science, LSE Library.
    • Handle: RePEc:ehl:lserod:61879
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    File URL: http://eprints.lse.ac.uk/61879/
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    Citations

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    Cited by:

    1. Desmond Cai & Subhonmesh Bose & Adam Wierman, 2019. "On the Role of a Market Maker in Networked Cournot Competition," Mathematics of Operations Research, INFORMS, vol. 44(3), pages 1122-1144, August.
    2. Itkonen, Juha, 2017. "Efficiency and dependency in a network of linked permit markets," Research Discussion Papers 20/2017, Bank of Finland.
    3. Kostas Bimpikis & Shayan Ehsani & Rahmi İlkılıç, 2019. "Cournot Competition in Networked Markets," Management Science, INFORMS, vol. 67(6), pages 2467-2481, June.
    4. Ana Babus & Péter Kondor, 2018. "Trading and Information Diffusion in Over‐the‐Counter Markets," Econometrica, Econometric Society, vol. 86(5), pages 1727-1769, September.
    5. repec:zbw:bofrdp:2017_020 is not listed on IDEAS
    6. Goyal, S., 2016. "Networks and Markets," Cambridge Working Papers in Economics 1652, Faculty of Economics, University of Cambridge.
    7. Daniele Condorelli & Andrea Galeotti & Vasiliki Skreta, 2018. "Selling through referrals," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 27(4), pages 669-685, October.
    8. Itkonen, Juha, 2017. "Efficiency and dependency in a network of linked permit markets," Bank of Finland Research Discussion Papers 20/2017, Bank of Finland.
    9. Yasuhiro Shirata, 2020. "Evolution of a Collusive Price in a Networked Market," Dynamic Games and Applications, Springer, vol. 10(2), pages 528-554, June.
    10. Hase, Ryo & Shinomiya, Norihiko, 2016. "A mathematical modeling technique with network flows for social welfare maximization in deregulated electricity markets," Operations Research Perspectives, Elsevier, vol. 3(C), pages 59-66.
    11. Chen, Jun & Elliott, Matthew & Koh, Andrew, 2023. "Capability accumulation and conglomeratization in the information age," Journal of Economic Theory, Elsevier, vol. 210(C).
    12. Zenou, Yves & Jackson, Matthew O. & Rogers, Brian, 2016. "Networks: An economic perspective," CEPR Discussion Papers 11452, C.E.P.R. Discussion Papers.
    13. Kotowski, Maciej H. & Leister, C. Matthew, 2018. "Trading Networks and Equilibrium Intermediation," Working Paper Series rwp18-001, Harvard University, John F. Kennedy School of Government.
    14. Chen, J. & Elliott, M. & Koh, A., 2020. "Capability Accumulation and Conglomeratization in the Information Age," Cambridge Working Papers in Economics 2069, Faculty of Economics, University of Cambridge.
    15. Barauskaite, Kristina & Nguyen, Anh D.M., 2021. "Global intersectoral production network and aggregate fluctuations," Economic Modelling, Elsevier, vol. 102(C).
    16. Thành Nguyen & Karthik Kannan, 2021. "Welfare Implications in Intermediary Networks," Information Systems Research, INFORMS, vol. 32(2), pages 378-393, June.

    More about this item

    Keywords

    decentralized markets; intermediation; oligopoly; efficiency; market power;
    All these keywords.

    JEL classification:

    • C7 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory
    • D6 - Microeconomics - - Welfare Economics
    • 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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