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Efficiency and information aggregation in auctions with costly information

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  • Matthew Jackson

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Abstract

Consider an auction in which k identical objects are sold to n > k bidders who each have a value for one object which can have both private and common components to it. Private information concerning the common component of the object is not exogenously given, but rather endogenous and bidders face a cost to becoming informed. If the cost of information is not prohibitively high, then the equilibrium price in a uniform price auction will not aggregate private information, in contrast to the costless information case. Moreover, for a wide class of auctions if the cost of information is not prohibitively high then the objects can only be allocated in a weakly efficient sense, and then only if the equilibrium proportion of endogenously informed agents is vanishing as the economy grows. In spite of these results, it is shown that there is a mechanism for which there exist equilibria and for which (weak) efficiency is achieved as the economy grows in the face of endogenous information acquisition. Copyright Springer-Verlag Berlin/Heidelberg 2003

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File URL: http://hdl.handle.net/10.1007/s10058-003-0098-7
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Bibliographic Info

Article provided by Springer in its journal Review Economic Design.

Volume (Year): 8 (2003)
Issue (Month): 2 (October)
Pages: 121-141

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Handle: RePEc:spr:reecde:v:8:y:2003:i:2:p:121-141

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Related research

Keywords: Auctions; efficiency; information acquisition; information aggregation;

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Cited by:
  1. Jehiel, Philippe & Moldovanu, Benny, 2005. "Allocative and Informational Externalities in Auctions and Related Mechanisms," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 142, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
  2. Dirk Bergemann & Xianwen Shi & Juuso Valimaki, 2007. "Information Acquisition in Interdependent Value Auctions," Cowles Foundation Discussion Papers 1619, Cowles Foundation for Research in Economics, Yale University.
  3. Tunca, Tunay I., 2008. "Information precision and asymptotic efficiency of industrial markets," Journal of Mathematical Economics, Elsevier, vol. 44(9-10), pages 964-996, September.
  4. Diego García & Branko Urosevic, 2004. "Noise and aggregation of information in large markets," Economics Working Papers 785, Department of Economics and Business, Universitat Pompeu Fabra.
  5. Bikhchandani, Sushil, 2010. "Information acquisition and full surplus extraction," Journal of Economic Theory, Elsevier, vol. 145(6), pages 2282-2308, November.
  6. García, Diego & Urošević, Branko, 2013. "Noise and aggregation of information in large markets," Journal of Financial Markets, Elsevier, vol. 16(3), pages 526-549.

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