In search of the winner's curse

Abstract

Earlier papers on the winner’s curse have provided theoretical arguments that winning bidders in an auction will incur ex post losses even when all bidders use reasonable ex ante bidding strategies. This paper demonstrates that these arguments are erroneous: optimal ex ante bidders will never suffer from a winner’s curse in an auction where only the winning bid is announced; furthermore, such bidders will on the average not suffer from a winner’s curse in an auction where all bids are announced. Thus if a winner’s curse is a behavioral reality then bidders are not generally using ex ante optimal strategies.