Multiple bids in a multiple-unit common value auction:simulations for the spanish auction
ISSN: 2341-2356
Datum der Publikation: 1999
Nummer: 7
Seiten: 1-15
Art: Arbeitsdokument
Andere Publikationen in: Documentos de Trabajo (ICAE)
Zusammenfassung
The Spanish Treasury is the only one in the world that uses a hybrid system of discriminatory and uniform price auctions to sell bonds. In the Spanish auction, winning bidders pay their bid price if it is lower than tbe weighted average price of witming bids, while all other winning bidders pay the weighted average price of winning bids. We adapt Gordy's (96) medel of the discriminatory auction to the Spanish auction. The model is a discrete model of multiple bids in a multiple-unit common value auction. We use numerical simulations to find equilibria for the Spanish, the uniform and the discriminatory auction. Our results show that bidders in the Spanish and discriminatory auctions use bid spread to cover themselves against uncertainty, and that expected seller's revenue is larger on average in the former.