The winner of an auction for a commodity
with unknown value will most likely be the bidder who has the highest estimated
value of the good. Typically, the
winner overestimates the value and then overpays in the auction. Bidders need to significantly shade their
bids to ensure that if they are the highest estimator of value, they do not
overpay for a good. Before the March Madness
in the Classroom Auctions, an instructor may consider discussing the
winner’s curse using the popular “Jar of Pennies” auction. The instructor brings in a jar of pennies
and asks students to estimate the number of pennies in the jar. The instructor then allows students to bid
on the jar (using a sealed bid or an open outcry format). Invariably, the student who wins the auction
has overestimated the number of pennies in the jar and spends more than the
jar’s value. Although this instruction
should help students bid with more savvy in the March Madness in the
Classroom Auctions, the “Winner’s Curse” still tends to appear in these
auctions as well.
An instructor may wish to discuss bidding strategies in a first-price open outcry auction, a first-price sealed bid auction, and a second-price sealed bid (Vickrey) auction. Students should be familiar with how bidding strategies change when bidders’ valuations are common or private and known or unknown. In the March Madness in the Classroom Auctions bidders’ valuations are private and unknown. Bidders must consider shading their bids to avoid the winner’s curse and to generate a profit.