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Market Power And Information Revelation In Dynamic Trading

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Author Info

  • Piero Gottardi

    (Università di Venezia,)

  • Roberto Serrano

    (Brown University,)

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 existing 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. (JEL: C72, C78, D82, D83) Copyright (c) 2005 by the European Economic Association.

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Bibliographic Info

Article provided by MIT Press in its journal Journal of the European Economic Association.

Volume (Year): 3 (2005)
Issue (Month): 6 (December)
Pages: 1279-1317

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Handle: RePEc:tpr:jeurec:v:3:y:2005:i:6:p:1279-1317

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  1. Vives, X., 1992. "The Speed of Information Revelation in a Financial Market Mechanism," UFAE and IAE Working Papers 174.92, Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC).
  2. 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.
  3. Martin W. Cripps & Jeroen M. Swinkels, 2006. "Efficiency of Large Double Auctions," Econometrica, Econometric Society, vol. 74(1), pages 47-92, 01.
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Cited by:
  1. José Ramón Martínez-Resano, 2005. "Size and heterogeneity matter. A microstructure-based analysis of regulation of secondary markets for governments bonds," Banco de Espa�a Occasional Papers 0501, Banco de Espa�a.
  2. Sergei Severinov & Michael Peters, 2004. "Internet Trading Mechanisms And Rational Expectations," Econometric Society 2004 North American Winter Meetings 551, Econometric Society.
  3. Dmitry Levando, 2012. "A Survey Of Strategic Market Games," Economic Annals, Faculty of Economics, University of Belgrade, vol. 57(194), pages 63-106, July - Se.
  4. J.Ramon Martinez-Resano, 2005. "Size And Heterogeneity Matter. A Microstructure-Based Analysis Of Regulation Of Secondary Markets For Government Bonds," Finance 0508007, EconWPA.
  5. Isaac, Tanguy, 2011. "A new equilibrium in the one-sided asymmetric information market with pairwise meetings," Mathematical Social Sciences, Elsevier, vol. 61(3), pages 152-156, May.
  6. Yusuke Kamishiro & Roberto Serrano, 2009. "Equilibrium Blocking in Large Quasilinear Economies," Working Papers 2009-12, Brown University, Department of Economics.
  7. Peters, Michael & Severinov, Sergei, 2003. "An Ascending Double Auction," Microeconomics.ca working papers peters-03-12-16-01-57-39, Vancouver School of Economics, revised 26 Feb 2005.
  8. Bochet,Olivier, 2005. "Switching from Complete to Incomplete Information," Research Memorandum 035, Maastricht University, Maastricht Research School of Economics of Technology and Organization (METEOR).
  9. BOCHET, Olivier, 2005. "Switching from complete to incomplete information," CORE Discussion Papers 2005063, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).

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