Informational Free Rides in Uniform Price Auctions: Exception or Norm?
AbstractMulti-unit common value uniform price auctions with demand function bids are in widespread use. I analyze this auction when there is an informed bidder and other uninformed bidders. In such auctions it is easy to construct equilibria in which uninformed bidders earn a positive payoff by free riding on the informed bidder’s information. Here I ask whether such free riding arises only in special cases, and should therefore be considered a pathological exception, or whether it is the norm in equilibrium. To answer this, I derive the necessary and sufficient condition for uninformed bidders to earn a zero payoff in all equilibria. The condition requires that there should be enough demand by uninformed bidders at least at low prices so that no single uninformed bidder is “pivotal” in deciding whether total uninformed demand equals or exceeds supply, and places a lower bound on the highest price submitted by the informed bidder (i.e. the highest price at which at least one unit is demanded by the informed bidder). Equilibria not satisfying the condition exist. In these, uninformed bidders appropriate some of the information rent. Further, the condition is quite strong in certain cases, casting doubt on existence of equilibria with zero uninformed payoff. If there is no such equilibrium, informational free riding characterizes all equilibria in uniform price auctions. I discuss application of the results to Treasury auctions as well as repo auctions.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoPaper provided by Birkbeck, Department of Economics, Mathematics & Statistics in its series Birkbeck Working Papers in Economics and Finance with number 0521.
Date of creation: Nov 2005
Date of revision:
Contact details of provider:
Postal: Malet Street, London WC1E 7HX, UK
Phone: 44-20- 76316429
Fax: 44-20- 76316416
Web page: http://www.ems.bbk.ac.uk/
Other versions of this item:
- Arup Daripa, 2005. "Informational Free Rides in Uniform Price Auctions: Exception or Norm?," Microeconomics 0511007, EconWPA.
- D44 - Microeconomics - - Market Structure and Pricing - - - Auctions
This paper has been announced in the following NEP Reports:
- NEP-ALL-2005-12-01 (All new papers)
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Klemperer, P., 1999.
"Auction Theory: a Guide to the Literature,"
1999-w12, Economics Group, Nuffield College, University of Oxford.
- Paul Klemperer, 1999. "Auction Theory: A Guide to the Literature," Microeconomics 9903002, EconWPA.
- Paul Klemperer, 1999. "Auction Theory: A Guide to the Literature," Economics Series Working Papers 1999-W12, University of Oxford, Department of Economics.
- Klemperer, Paul, 1999. "Auction Theory: a Guide to the Literature," CEPR Discussion Papers 2163, C.E.P.R. Discussion Papers.
- Lawrence M. Ausubel & Peter Cramton, 1995. "Demand Reduction and Inefficiency in Multi-Unit Auctions," Papers of Peter Cramton 98wpdr, University of Maryland, Department of Economics - Peter Cramton, revised 22 Jul 2002.
- Hernando-Veciana, Angel, 2004.
"Successful uninformed bidding,"
Games and Economic Behavior,
Elsevier, vol. 48(1), pages 29-53, July.
- Ángel Hernando Veciana, 2001. "Successful Uninformed Bidding," Working Papers. Serie AD 2001-06, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
- Angel Hernando-Veciana, 2000. "Successful Uninformed Bidding," Econometric Society World Congress 2000 Contributed Papers 0791, Econometric Society.
- Paul Milgrom & Robert J. Weber, 1981.
"The Value of Information in a Sealed-Bid Auction,"
462, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Engelbrecht-Wiggans, Richard & Milgrom, Paul R. & Weber, Robert J., 1983. "Competitive bidding and proprietary information," Journal of Mathematical Economics, Elsevier, vol. 11(2), pages 161-169, April.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ().
If references are entirely missing, you can add them using this form.