Advanced Search
MyIDEAS: Login

Informational Free Rides in Uniform Price Auctions: Exception or Norm?

Contents:

Author Info

  • Arup Daripa

    (Department of Economics, Mathematics & Statistics, Birkbeck)

Abstract

Multi-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 Info

If 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.
File URL: http://www.ems.bbk.ac.uk/research/wp/PDF/BWPEF0521.pdf
File Function: First version, 2005
Download Restriction: no

Bibliographic Info

Paper provided by Birkbeck, Department of Economics, Mathematics & Statistics in its series Birkbeck Working Papers in Economics and Finance with number 0521.

as in new window
Length:
Date of creation: Nov 2005
Date of revision:
Handle: RePEc:bbk:bbkefp:0521

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/

Order Information:
Email:

Related research

Keywords: Uniform price auction; demand function bids; market clearing price; informational free riding; Treasury auctions; repo auctions;

Other versions of this item:

Find related papers by JEL classification:

This paper has been announced in the following NEP Reports:

References

References listed on IDEAS
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.:
as in new window
  1. Milgrom, Paul & Weber, Robert J., 1982. "The value of information in a sealed-bid auction," Journal of Mathematical Economics, Elsevier, vol. 10(1), pages 105-114, June.
  2. 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.
  3. Paul Klemperer, 1999. "Auction Theory: A Guide to the Literature," Economics Series Working Papers 1999-W12, University of Oxford, Department of Economics.
  4. Ángel Hernando Veciana, 2001. "Successful Uninformed Bidding," Working Papers. Serie AD 2001-06, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
  5. 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.
Full references (including those not matched with items on IDEAS)

Citations

Lists

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

Statistics

Access and download statistics

Corrections

When requesting a correction, please mention this item's handle: RePEc:bbk:bbkefp:0521. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ().

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.