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Horizontally Differentiated Market Makers

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Author Info
Simon Loertscher

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Abstract

I present a model of competition between two market makers who are horizontally differentiated. I first show that absent a search market for buyers and sellers, there is a continuum of symmetric equilibria. These equilibria are payoff equivalent for market makers, but affect buyers' and sellers' welfare in opposite ways. Second, I analyze the model when buyers and sellers can also exchange the good in search markets. The model with search markets shares many features with existing models, yet allows competing intermediaries to net a profit in equilibrium. Interestingly, the model exhibits a complementarity between intermediaries' profits in the presence of search markets. Third, I show that every equilibrium in a game with market makers is also an equilibrium in an appropriately defined game with matchmakers

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Publisher Info
Paper provided by Universitaet Bern, Departement Volkswirtschaft in its series Diskussionsschriften with number dp0510.

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Date of creation: Sep 2005
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Handle: RePEc:ube:dpvwib:dp0510

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Related research
Keywords: Market making; intermediation and search; horizontal differentiation; market microstructure;

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Find related papers by JEL classification:
C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
D41 - Microeconomics - - Market Structure and Pricing - - - Perfect Competition
D43 - Microeconomics - - Market Structure and Pricing - - - Oligopoly and Other Forms of Market Imperfection
L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Rochet, Jean-Charles & Tirole, Jean, 2005. "Two-Sided Markets : A Progress Report," IDEI Working Papers 275, Institut d'Économie Industrielle (IDEI), Toulouse. [Downloadable!]
    Other versions:
    • Jean-Charles Rochet Author-Email: rochet@cict.fr Author-Workplace-Name: IDEI, University of Toulouse & Jean Tirole Author-Email: tirole@cict.fr Author-Workplace-Name: IDEI, University of Toulouse, 2006. "Two-Sided Markets: A Progress Report," RAND Journal of Economics, The RAND Corporation, vol. 37(3), pages 645-667, Autumn.
  2. Steven C. Salop, 1979. "Monopolistic Competition with Outside Goods," Bell Journal of Economics, The RAND Corporation, vol. 10(1), pages 141-156, Spring. [Downloadable!] (restricted)
  3. Spulber, Daniel F, 1996. "Market Microstructure and Intermediation," Journal of Economic Perspectives, American Economic Association, vol. 10(3), pages 135-52, Summer. [Downloadable!] (restricted)
  4. repec:rus:hseeco:72158 is not listed on IDEAS
  5. Stahl, Dale O, II, 1988. "Bertrand Competition for Inputs and Walrasian Outcomes," American Economic Review, American Economic Association, vol. 78(1), pages 189-201, March. [Downloadable!] (restricted)
  6. Spulber, Daniel F, 1996. "Market Making by Price-Setting Firms," Review of Economic Studies, Blackwell Publishing, vol. 63(4), pages 559-80, October. [Downloadable!] (restricted)
  7. Yavas, Abdullah, 1994. "Middlemen in Bilateral Search Markets," Journal of Labor Economics, University of Chicago Press, vol. 12(3), pages 406-29, July. [Downloadable!] (restricted)
  8. John Rust & George Hall, 2003. "Middlemen versus Market Makers: A Theory of Competitive Exchange," Journal of Political Economy, University of Chicago Press, vol. 111(2), pages 353-403, April. [Downloadable!] (restricted)
    Other versions:
  9. Yavas Abdullah, 1995. "Can Brokerage Have an Equilibrium Selection Role?," Journal of Urban Economics, Elsevier, vol. 37(1), pages 17-37, January. [Downloadable!] (restricted)
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