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Trading networks with price-setting agents

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Author Info

  • Blume, Lawrence E.
  • Easley, David
  • Kleinberg, Jon
  • Tardos, Éva

Abstract

In a wide range of markets, individual buyers and sellers trade through intermediaries, who determine prices via strategic considerations. Typically, not all buyers and sellers have access to the same intermediaries, and they trade at correspondingly different prices that reflect their relative amounts of power in the market. We model this phenomenon using a game in which buyers, sellers, and traders engage in trade on a graph that represents the access each buyer and seller has to the traders. We show that the resulting game always has a subgame perfect Nash equilibrium, and that all equilibria lead to an efficient allocation of goods. Finally, we analyze trader profits in terms of the graph structure -- roughly, a trader can command a positive profit if and only if it has an "essential" connection in the network, thus providing a graph-theoretic basis for quantifying the amount of competition among traders.

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Bibliographic Info

Article provided by Elsevier in its journal Games and Economic Behavior.

Volume (Year): 67 (2009)
Issue (Month): 1 (September)
Pages: 36-50

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Handle: RePEc:eee:gamebe:v:67:y:2009:i:1:p:36-50

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Web page: http://www.elsevier.com/locate/inca/622836

Related research

Keywords: Networks Trade Price formation;

References

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  1. Spulber,Daniel F., 2009. "The Theory of the Firm," Cambridge Books, Cambridge University Press, number 9780521736602, December.
  2. Roger B. Myerson & Mark A. Satterthwaite, 1981. "Efficient Mechanisms for Bilateral Trading," Discussion Papers 469S, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  3. Bikhchandani, Sushil & Ostroy, Joseph M., 2002. "The Package Assignment Model," Journal of Economic Theory, Elsevier, vol. 107(2), pages 377-406, December.
  4. Yavas, Abdullah, 1994. "Middlemen in Bilateral Search Markets," Journal of Labor Economics, University of Chicago Press, vol. 12(3), pages 406-29, July.
  5. Hall, George & Rust, John, 2000. "An empirical model of inventory investment by durable commodity intermediaries," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 52(1), pages 171-214, June.
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  7. Li, Yiting, 1998. "Middlemen and private information," Journal of Monetary Economics, Elsevier, vol. 42(1), pages 131-159, June.
  8. Douglas M. Gale & Shachar Kariv, 2007. "Financial Networks," American Economic Review, American Economic Association, vol. 97(2), pages 99-103, May.
  9. Demange, Gabrielle & Gale, David & Sotomayor, Marilda, 1986. "Multi-Item Auctions," Journal of Political Economy, University of Chicago Press, vol. 94(4), pages 863-72, August.
  10. Christian Hellwig, 2000. "Money, Intermediaries and Cash-in-Advance Constraints," Econometric Society World Congress 2000 Contributed Papers 1631, Econometric Society.
  11. Babaioff, Moshe & Nisan, Noam & Pavlov, Elan, 2009. "Mechanisms for a spatially distributed market," Games and Economic Behavior, Elsevier, vol. 66(2), pages 660-684, July.
  12. Kelso, Alexander S, Jr & Crawford, Vincent P, 1982. "Job Matching, Coalition Formation, and Gross Substitutes," Econometrica, Econometric Society, vol. 50(6), pages 1483-1504, November.
  13. Leon Yang Chu & Zuo-Jun Max Shen, 2006. "Agent Competition Double-Auction Mechanism," Management Science, INFORMS, vol. 52(8), pages 1215-1222, August.
  14. Crawford, Vincent P & Knoer, Elsie Marie, 1981. "Job Matching with Heterogeneous Firms and Workers," Econometrica, Econometric Society, vol. 49(2), pages 437-50, March.
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Citations

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Cited by:
  1. Nermuth, Manfred & Pasini, Giacomo & Pin, Paolo & Weidenholzer, Simon, 2013. "The informational divide," Games and Economic Behavior, Elsevier, vol. 78(C), pages 21-30.
  2. Mikel Bedayo & Ana Mauleon & Vincent Vannetelbosch, 2013. "Bargaining and Delay in Trading Networks," Working Papers 2013.01, Fondazione Eni Enrico Mattei.
  3. Jan-Peter Siedlarek, 2012. "Intermediation in Networks," Working Papers 2012.42, Fondazione Eni Enrico Mattei.
  4. Itay P. Fainmesser & David A. Goldberg, 2011. "Bilateral and Community Enforcement in a Networked Market with Simple Strategies," Working Papers 2011-2, Brown University, Department of Economics.
  5. Carlos Lever Guzmán, 2011. "Price Competition on Network," Working Papers 2011-04, Banco de México.

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