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Market Power and Information Revelation in Dynamic Trading

Author

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  • Piero Gottardi

    (Department of Economics, Universita di Venezia)

  • Roberto Serrano

    (Department of Economics, 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 uninformed buyers and a finite number of sellers, some of them informed. When there is only one seller, full information revelation never occurs in equilibrium and the only information transmission happens in the first period. The outcome with n sellers depends both on the structure of sellers' information and, more importantly, on the intensity of competition among them allowed by the trading rules. With intense competition (absence of clienteles), information is fully and immediately revealed to the buyers in every equilibrium for n large enough, both when all sellers are informed and when only one seller is informed. On the other hand, with a less intense form of competition (presence of clienteles), we always have equilibria where information is never fully revealed, whatever the number of sellers. Moreover in this case, when only one seller is informed, for many parameter configurations there are no equilibria with full information revelation, for any n.

Suggested Citation

  • Piero Gottardi & Roberto Serrano, 2002. "Market Power and Information Revelation in Dynamic Trading," Economics Working Papers 0027, Institute for Advanced Study, School of Social Science.
  • Handle: RePEc:ads:wpaper:0027
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    References listed on IDEAS

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    1. Martin W. Cripps & Jeroen M. Swinkels, 2006. "Efficiency of Large Double Auctions," Econometrica, Econometric Society, vol. 74(1), pages 47-92, January.
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    3. Vives Xavier, 1995. "The Speed of Information Revelation in a Financial Market Mechanism," Journal of Economic Theory, Elsevier, vol. 67(1), pages 178-204, October.
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    Citations

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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," Occasional Papers 0501, Banco de España.
    2. 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.
    3. Michael Peters & Sergei Severinov, 2008. "An ascending double auction," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 37(2), pages 281-306, November.
    4. Yusuke Kamishiro & Roberto Serrano, 2011. "Equilibrium Blocking in Large Quasilinear Economies," Mathematics of Operations Research, INFORMS, vol. 36(3), pages 552-567, August.
    5. Bochet, Olivier, 2007. "Switching from complete to incomplete information," Journal of Mathematical Economics, Elsevier, vol. 43(6), pages 735-748, August.
    6. Palazzo, Francesco & Zhang, Min, 2017. "Information disclosure and asymmetric speed of learning in booms and busts," Economics Letters, Elsevier, vol. 158(C), pages 37-40.
    7. Franco Mariuzzo & Patrick Paul Walsh & Ciara Whelan, 2004. "EU Merger Control in Differentiated Product Industries," CESifo Working Paper Series 1312, CESifo.
    8. 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.
    9. Zhou, Deqing, 2016. "Public disclosure, information leakage, and strategic trading," Economics Letters, Elsevier, vol. 147(C), pages 46-50.
    10. Majumdar, Dipjyoti & Shneyerov, Art & Xie, Huan, 2010. "How Optimism Leads to Price Discovery and Efficiency in a Dynamic Matching Market," Microeconomics.ca working papers artyom_shneyerov-2010-32, Vancouver School of Economics, revised 26 Oct 2010.
    11. Perea ý Monsuwé, A., 2005. "A model of minimal probabilistic belief revision," Research Memorandum 035, Maastricht University, Maastricht Research School of Economics of Technology and Organization (METEOR).
    12. J.Ramon Martinez-Resano, 2005. "Size And Heterogeneity Matter. A Microstructure-Based Analysis Of Regulation Of Secondary Markets For Government Bonds," Finance 0508007, University Library of Munich, Germany.
    13. Peck, James, 2014. "A battle of informed traders and the market game foundations for rational expectations equilibrium," Games and Economic Behavior, Elsevier, vol. 88(C), pages 153-173.
    14. Sergei Severinov & Michael Peters, 2004. "Internet Trading Mechanisms And Rational Expectations," Econometric Society 2004 North American Winter Meetings 551, Econometric Society.
    15. Dipjyoti Majumdar & Artyom Shneyerov & Huan Xie, 2016. "An optimistic search equilibrium," Review of Economic Design, Springer;Society for Economic Design, vol. 20(2), pages 89-114, June.
    16. Isaac Tanguy, 2010. "Information Revelation in Markets with Pairwise Meetings: Complete Revelation in Dynamic Analysis," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 10(1), pages 1-17, January.

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    More about this item

    Keywords

    asymmetric information; information revelation; dynamic trading; oligopolistic competition; clienteles;
    All these keywords.

    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; Mechanism Design
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

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