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Collusion Via Resale

  • Garratt, Rod
  • Troger, Thomas
  • Zheng, Charles Zhoucheng

The English auction is susceptible to tacit collusion when post-auction inter-bidder resale is allowed. We show this by constructing equilibria where, with positive probability, one bidder wins the auction without any competition and divides the spoils by optimally reselling the good to the other bidders. These equilibria interim Pareto dominate (among bidders) the standard value-bidding equilibrium, without requiring the bidders to make any commitment on bidding behavior or post-bidding spoil-division.

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File URL: http://www.econ.iastate.edu/sites/default/files/publications/papers/p5439-2007-06-30.pdf
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Paper provided by Iowa State University, Department of Economics in its series Staff General Research Papers with number 12829.

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Date of creation: 30 Jun 2007
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Publication status: Published in Econometrica, July 2009, vol. 77 no. 4, pp. 1095-1136
Handle: RePEc:isu:genres:12829
Contact details of provider: Postal: Iowa State University, Dept. of Economics, 260 Heady Hall, Ames, IA 50011-1070
Phone: +1 515.294.6741
Fax: +1 515.294.0221
Web page: http://www.econ.iastate.edu
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  1. Haile,P.A., 1999. "Auctions with resale," Working papers 33, Wisconsin Madison - Social Systems.
  2. Rod Garratt & Thomas Troger, 2004. "Speculation in Standard Auctions with Resale," Microeconomics 0405005, EconWPA.
  3. Sandro Brusco & Giuseppe Lopomo, 2004. "Collusion via Signalling in Simultaneous Ascending Bid Auctions with Heterogeneous Objects, with and without Complementarities," Levine's Bibliography 122247000000000385, UCLA Department of Economics.
  4. Paul Milgrom, 2000. "Putting Auction Theory to Work: The Simultaneous Ascending Auction," Journal of Political Economy, University of Chicago Press, vol. 108(2), pages 245-272, April.
  5. Paul Milgrom & Robert J. Weber, 1981. "A Theory of Auctions and Competitive Bidding," Discussion Papers 447R, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  6. Charles Zheng, 2000. "An Optimal Auction When Resale Cannot Be Prohibited," Discussion Papers 1303, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  7. Friedman, James W, 1971. "A Non-cooperative Equilibrium for Supergames," Review of Economic Studies, Wiley Blackwell, vol. 38(113), pages 1-12, January.
  8. Mailath, George J. & Zemsky, Peter, 1991. "Collusion in second price auctions with heterogeneous bidders," Games and Economic Behavior, Elsevier, vol. 3(4), pages 467-486, November.
  9. Roger B. Myerson, 1988. "Mechanism Design," Discussion Papers 796, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  10. McAfee, R. Preston & McMillan, John., 1990. "Bidding Rings," Working Papers 726, California Institute of Technology, Division of the Humanities and Social Sciences.
  11. Marco Pagnozzi, 2007. "Should Speculators Be Welcomed in Auctions?," CSEF Working Papers 176, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy.
  12. Gale, Ian L & Hausch, Donald B & Stegeman, Mark, 2000. "Sequential Procurement with Subcontracting," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 41(4), pages 989-1020, November.
  13. Rod Garrat & Thomas Tröger, 2005. "Speculation in Standard Auctions with Resale," Bonn Econ Discussion Papers bgse10_2005, University of Bonn, Germany.
  14. Paul Milgrom & Ilya Segal, 2002. "Envelope Theorems for Arbitrary Choice Sets," Econometrica, Econometric Society, vol. 70(2), pages 583-601, March.
  15. Lopomo Giuseppe & Marshall Robert C. & Marx Leslie M, 2005. "Inefficiency of Collusion at English Auctions," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 5(1), pages 1-28, June.
  16. Cass, David & Shell, Karl, 1983. "Do Sunspots Matter?," Journal of Political Economy, University of Chicago Press, vol. 91(2), pages 193-227, April.
  17. Mylovanov, Tymofiy & Tröger, Thomas, 2006. "A Characterization of the Conditions for Optimal Auction with Resale," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 128, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
  18. Marshall, Robert C. & Marx, Leslie M., 2007. "Bidder collusion," Journal of Economic Theory, Elsevier, vol. 133(1), pages 374-402, March.
  19. Graham, Daniel A & Marshall, Robert C, 1987. "Collusive Bidder Behavior at Single-Object Second-Price and English Auctions," Journal of Political Economy, University of Chicago Press, vol. 95(6), pages 1217-39, December.
  20. Richard Engelbrecht-Wiggans & Charles M. Kahn, 2005. "Low-Revenue Equilibria in Simultaneous Ascending-Bid Auctions," Management Science, INFORMS, vol. 51(3), pages 508-518, March.
  21. Blume, Andreas & Heidhues, Paul, 2004. "All equilibria of the Vickrey auction," Journal of Economic Theory, Elsevier, vol. 114(1), pages 170-177, January.
  22. Haile, Philip A., 2003. "Auctions with private uncertainty and resale opportunities," Journal of Economic Theory, Elsevier, vol. 108(1), pages 72-110, January.
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