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Collusion in repeated auctions: a simple dynamic mechanism

Author

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  • Wouter Vergote

    (CEREC, Facultés universitaires Saint-Louis and CORE, UCLouvain)

Abstract

We analyze collusion in an infinitely repeated version of a standard auction with a continuum of types. Because of the lack of efficiency results in this setting the literature has focused on determining and comparing benchmarks on how well bidders can collude. Aoyagi (2003) has shown that the bidders can improve upon static bid rotation, making use of a dynamic bid rotation scheme, but this scheme does not allow to determine how much bidders can improve upon bid rotation. In this paper we design a very simple dynamic mechanism that improves upon static bid rotation and in the limit recovers one third of the gap between static bid rotation and efficiency, independently of the underlying distribution of values.

Suggested Citation

  • Wouter Vergote, 2011. "Collusion in repeated auctions: a simple dynamic mechanism," Economics Bulletin, AccessEcon, vol. 31(1), pages 714-721.
    • Handle: RePEc:ebl:ecbull:eb-10-00130
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    Cited by:

    1. Olga Gorelkina, 2014. "Bidder Collusion and the Auction with Target Bids," Discussion Paper Series of the Max Planck Institute for Research on Collective Goods 2014_10, Max Planck Institute for Research on Collective Goods.
    2. Olga Gorelkina, 2018. "Collusion via Information Sharing and Optimal Auctions," Working Papers 20182, University of Liverpool, Department of Economics.

    More about this item

    Keywords

    Auctions; Collusion; Repeated Games; Private Information;
    All these keywords.

    JEL classification:

    • C7 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory
    • D8 - Microeconomics - - Information, Knowledge, and Uncertainty

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