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Market Power and Information Revelation in Dynamic Trading

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Author Info
Piero Gottardi ()
Roberto Serrano ()

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Abstract

We study a strategic model of dynamic trading where agents are asymmetrically informed over common value sources of uncertainty. There is a continuum of buyers and a finite number n of sellers. All buyers are uninformed, while at least one seller is privately informed about the true state of the world. When n = 1, full information revelation never occurs in equilibrium and the only information transmission happens in the first period. With n > 1 the outcome depends both on the structure of the sellers’ information and, even more importantly, on the intensity of competition allowed by the trading rules. When there is intense competition (absence of clienteles), information is fully and immediately revealed to the buyers in every equilibrium for n large enough, regardless of the number of informed sellers. On the other hand, for trading arrangements characterized by less intense forms of competition (presence of clienteles), for any n we always have equilibria where information is never fully revealed. Moreover, in that case, when only one seller is informed, for many parameter configurations there are no equilibria with full information revelation, even for large n.

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Publisher Info
Paper provided by CESifo Group Munich in its series CESifo Working Paper Series with number CESifo Working Paper No. 1300.

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Date of creation: 2004
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Handle: RePEc:ces:ceswps:_1300

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Related research
Keywords: asymmetric information; information revelation; dynamic trading; oligopolistic competition; clienteles;

Other versions of this item:

Find related papers by 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
D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information
D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search, Learning, and Information

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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. Shapley, Lloyd S & Shubik, Martin, 1977. "Trade Using One Commodity as a Means of Payment," Journal of Political Economy, University of Chicago Press, vol. 85(5), pages 937-68, October. [Downloadable!] (restricted)
  2. Xavier Vives, 1992. "The Speed of Information Revelation in a Financial Market Mechanism," CEPR Financial Markets Paper 0016, European Science Foundation Network in Financial Markets, c/o C.E.P.R, 53--56 Great Sutton Street, London EC1V 0DG.
    Other versions:
  3. Martin W Cripps & Jeroen M Swinkels, 2003. "Efficiency of Large Double Auctions," Levine's Working Paper Archive 666156000000000329, David K. Levine. [Downloadable!]
    Other versions:
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Cited by:
(explanations, 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. Michael Peters & Sergei Severinov, 2008. "An ascending double auction," Economic Theory, Springer, vol. 37(2), pages 281-306, November. [Downloadable!] (restricted)
    Other versions:
  2. BOCHET, Olivier, 2005. "Switching from complete to incomplete information," CORE Discussion Papers 2005063, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE). [Downloadable!]
    Other versions:
  3. J.Ramon Martinez-Resano, 2005. "Size And Heterogeneity Matter. A Microstructure-Based Analysis Of Regulation Of Secondary Markets For Government Bonds," Finance 0508007, EconWPA. [Downloadable!]
  4. Sergei Severinov & Michael Peters, 2004. "Internet Trading Mechanisms And Rational Expectations," Econometric Society 2004 North American Winter Meetings 551, Econometric Society. [Downloadable!]
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