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Multiple Bids in a Multiple-Unit Common Value Auction

Listed author(s):
  • Michael B. Gordy


    (Board of Governors of the Federal Reserve System, Washington)

In auctions of government treasury securities, each bidder is permitted to enter multiple price-quantity bids. Gordy (1996) finds empirical evidence from Portugal's treasury bill auctions that multiple bidding is used more intensively as the potential for winner's curse increases. That is, ceteris paribus, a bidder submits a larger number of bids and spreads these bids more widely, the greater is the expected number of competing bidders and the degree of uncertainty in the market. It is conjectured in that paper that multiple bids can be used to hedge against winner's curse, as well as to express downward sloping demand due to risk aversion. This paper provides theoretical support for these conjectures. Direct generalization of Milgrom and Weber (1982) to the multiple-unit, multiple bid case appears to be technically intractable. Heretofore, the theoretical study of multiple bid auctions has followed Wilson (1979), in which each bidder is assumed to submit a continuous demand schedule. Although elegant, Wilson's model remains poorly understood. It has been solved only for a small number of special distributional assumptions, and appears to give rise to multiple equilibria. Furthermore, bidders in the real world typically submit only a small number of bids, so assuming continuity may be as unrealistic as assuming a single bid per bidder. In the Portuguese sample, for example, the median number of bids per bidder is three.

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Paper provided by Society for Computational Economics in its series Computing in Economics and Finance 1996 with number _021.

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Handle: RePEc:sce:scecf6:_021
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Department of Econometrics, University of Geneva, 102 Bd Carl-Vogt, 1211 Geneva 4, Switzerland

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  1. Michael B. Gordy, 1999. "Hedging Winner'S Curse With Multiple Bids: Evidence From The Portuguese Treasury Bill Auction," The Review of Economics and Statistics, MIT Press, vol. 81(3), pages 448-465, August.
  2. Hardle, Wolfgang & Linton, Oliver, 1986. "Applied nonparametric methods," Handbook of Econometrics,in: R. F. Engle & D. McFadden (ed.), Handbook of Econometrics, edition 1, volume 4, chapter 38, pages 2295-2339 Elsevier.
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