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Bidding against an unknown number of competitiors sharing affiliated information

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  • Vleugels, Jan

    (University Mannheim)

Abstract

In the general symmetric model of Milgrom and Weber, equilibrium bidding is analyzed with a stochastic number of bidders. the equilibrium strategies generalize the known expressions in a coherent way. For the equilibrium bid function of the first price auction, an interpretation involving 'marginal winning probabilities' is proposed. With ageneralized version of the linkage principle, the well-knownrevenue ranking theorems extend to a stochastic number of bidders. As an application, we show that the seller's generically optimal information policy regarding the number of competitors is concealing the information.

Suggested Citation

  • Vleugels, Jan, 1997. "Bidding against an unknown number of competitiors sharing affiliated information," Sonderforschungsbereich 504 Publications 97-13, Sonderforschungsbereich 504, Universität Mannheim;Sonderforschungsbereich 504, University of Mannheim.
    • Handle: RePEc:xrs:sfbmaa:97-13
    Note: Financial support from the Deutsche Forschungsgemeinschaft, SFB 504, at the University of Mannheim, is gratefully acknowledged.
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    File URL: http://www.sfb504.uni-mannheim.de/publications/dp97-13.pdf
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    References listed on IDEAS

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