Equilibrium bids in sponsored search auctions: theory and evidence

Tilman Börgers, Ingemar Johansson Cox, Martin Pesendorfer, Vaclav Petricek

25 Citations (Scopus)

Abstract

This paper presents a game theoretic analysis of the generalized second-price auction that the company Overture operated in 2004 to sell sponsored search listings on search engines. We construct a model that embodies few prior assumptions about parameters, and we present results that indicate that this model has under quite general assumptions a multiplicity of Nash equilibria. We then analyze bid data assuming that advertisers choose Nash equilibrium bids. We offer preliminary conclusions about advertisers' true willingness to bid for sponsored search listings. We find that advertisers' true willingness to bid is multi-dimensional and decreasing in listing position.

Original languageEnglish
JournalAmerican Economic Journal. Microeconomics
Volume5
Issue number4
Pages (from-to)163-187
Number of pages25
ISSN1945-7669
DOIs
Publication statusPublished - Nov 2013
Externally publishedYes

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