ワークショップ「近代経済学のフロンティアに関する研究」
研究代表 :脇雄一郎
共同研究者:川上圭,菅野早紀,高準亨,西埜晴久,水上英貴,安井健悟,横手康二
発表者 :粟屋 祐 (東京大学)
タイトル :“Informational Content of Auction Prices”
要旨 :We study auctions of k identical objects to n bidders, each of whom
wants at most one. The objects have a common but unknown value
and the bidders receive private signals about this value. The discrim-
inatory price auction and the uniform-price auction are compared in
terms of how informative the resulting auction prices (not bids) are in
conveying the true value to an outside observer/investor. Since both
auctions have symmetric, monotone equilibria, the problem reduces to
comparing the informativeness of the highest order statistic of a sam-
ple to the (k + 1)st highest. We find sufficient conditions under which
the highest order statistic is superior—in the sense of Lehmann—in
this regard. The sufficient conditions involve the informativeness of
high versus low signals and the ratio k/n. These conditions are also
qualitatively necessary for the ranking of order statistics.
論文URL :https://drive.google.com/file/d/1bKeuG_ORvrHZMzSyvcoRW3eKVgoh9HIf/view
日時 :2026/12/1(火), 10:00-11:30
場所 :プレゼンテーションルーム(8号館6F経済学部合同研究室内)
* 本ワークショップは,経済研究所から「ワークショップ開催支援のためのプロジェクト」助成を受け,開催します.
