Private monitoring in auctions

Andreas Blume, Paul Heidhues

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


We study infinitely repeated first-price auctions in which a bidder only learns whether or not he won the object. While repetition of the stage-game equilibrium is the unique Nash equilibrium in public strategies, with patient bidders there are simple Nash equilibria in private strategies that improve on bid rotation. Sequential rationality is appropriately captured by essentially perfect Bayesian equilibrium (EPBE), which ignores behavior after irrelevant histories. Our main result is the construction of EPBEa that improve upon bid rotation. Assuming symmetry, the exclusionary schemes of Skrzypacz and Hopenhayn [Tacit collusion in repeated auctions, J. Econ. Theory 114 (2004), 153-169], including asymptotically efficient ones, are supported as EPBEa.

Original languageEnglish (US)
Pages (from-to)179-211
Number of pages33
JournalJournal of Economic Theory
Issue number1
StatePublished - Nov 2006


  • Auctions
  • Cartels
  • Repeated games
  • Tacit collusion
  • Withholding information

ASJC Scopus subject areas

  • Economics and Econometrics


Dive into the research topics of 'Private monitoring in auctions'. Together they form a unique fingerprint.

Cite this