Theory and Decision

, Volume 66, Issue 2, pp 181–198 | Cite as

Why a Simple Second-Price Auction Induces Efficient Endogenous Entry

  • Jingfeng LuEmail author


This article further studies ex ante efficient auctions in the setting of Stegeman (1996 Participation costs and efficient auctions, Journal of Economic Theory 71, 228–259.), where there exist entry costs for bidders who know their valuations. An alternative method is established to address efficient auctions. This method illustrates the intuition why the ex ante efficient allocation is Bayesian implementable through the Stegeman (1996) auction (a second-price auction with a reserve price equal to seller’s valuation and no entry fee). More importantly, our method leads to an alternative ex ante efficient auction that implements uniquely the efficient entry. Thus, this alternative auction solves the entry indeterminacy problem of the Stegeman (1996) auction, which generally induces inefficient entry equilibria besides the efficient ones.


Efficient Auction Endogenous Entry Entry Costs 

JEL Classifications

D44 D82 


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Copyright information

© Springer Science+Business Media, LLC. 2007

Authors and Affiliations

  1. 1.Department of EconomicsNational University of SingaporeSingaporeSingapore

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