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Equilibrium in a market with intermediation is Walrasian

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  • John Wooders

    () (Department of Economics, University of Arizona, McClelland Hall, Tucson, AZ 85721, USA)

Abstract

We show that a profit maximizing monopolistic intermediary may behave approximately like a Walrasian auctioneer by setting bid and ask prices nearly equal to Walrasian equilibrium prices. In our model agents choose to trade either through the intermediary or privately. Buyers (sellers) trading through the intermediary potentially trade immediately at the ask (bid) price, but sacrifice the spread as gains. A buyer or seller who trades privately shares all the gains to trade with this trading partner, but risks costly delay in finding a partner. We show that as the cost of delay vanishes, the equilibrium bid and ask prices converge to the Walrasian equilibrium prices.

Suggested Citation

  • John Wooders, 1997. "Equilibrium in a market with intermediation is Walrasian," Review of Economic Design, Springer;Society for Economic Design, vol. 3(1), pages 75-89.
  • Handle: RePEc:spr:reecde:v:3:y:1997:i:1:p:75-89
    Note: Received: 2 February 1996 / Accepted: 28 March 1997
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    References listed on IDEAS

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    1. Rubinstein, Ariel, 1982. "Perfect Equilibrium in a Bargaining Model," Econometrica, Econometric Society, vol. 50(1), pages 97-109, January.
    2. Gale, Douglas, 1987. "Limit theorems for markets with sequential bargaining," Journal of Economic Theory, Elsevier, vol. 43(1), pages 20-54, October.
    3. Gehrig, Thomas, 1993. "Intermediation in Search Markets," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 2(1), pages 97-120, Spring.
    4. Yavas, Abdullah, 1994. "Middlemen in Bilateral Search Markets," Journal of Labor Economics, University of Chicago Press, vol. 12(3), pages 406-429, July.
    5. Schmidt, David R & Aliprantis, Charalambos D, 1993. "Price Dynamics in Overlapping Generations Environments," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 3(3), pages 541-563, July.
    6. Rubinstein, Ariel & Wolinsky, Asher, 1985. "Equilibrium in a Market with Sequential Bargaining," Econometrica, Econometric Society, vol. 53(5), pages 1133-1150, September.
    7. Peter A. Diamond, 1982. "Wage Determination and Efficiency in Search Equilibrium," Review of Economic Studies, Oxford University Press, vol. 49(2), pages 217-227.
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    Citations

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    Cited by:

    1. Nadia Burani & Clara Ponsati, 2011. "Countervailing power? Collusion in markets with decentralized trade," Review of Economic Design, Springer;Society for Economic Design, vol. 15(2), pages 91-120, June.
    2. Simon Loertscher & Andras Niedermayer, 2008. "Fee Setting Intermediaries: On Real Estate Agents, Stock Brokers, and Auction Houses," Discussion Papers 1472, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
    3. Nadia Burani, 2008. "Matching, search and intermediation with two-sided heterogeneity," Review of Economic Design, Springer;Society for Economic Design, vol. 12(2), pages 75-117, June.
    4. Michael Sattinger, 2003. "Price Dynamics and the Market for Access to Trading Partners," Discussion Papers 03-10, University at Albany, SUNY, Department of Economics.

    More about this item

    Keywords

    Intermediation; bid; ask; matching; Walrasian equilibrium;

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • C78 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Bargaining Theory; Matching Theory
    • L12 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Monopoly; Monopolization Strategies

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