Multi-unit auctions: a theoretical, empirical and experimental approach.

Summary This thesis is devoted to the theoretical, empirical and experimental study of multi-unit auctions. It is composed of four chapters. The first one, theoretical, analyzes the role of information transmission in sequential auctions. The second and third chapters focus on the call option that allows the winner of an auction, in sequential auctions of homogeneous goods, to acquire the number of goods he wants at the price at which he has just won the auction. The first of these two chapters studies this question theoretically and experimentally thanks to an experiment carried out at the E. N. S. A. E. The second chapter also contains a theoretical part and an empirical analysis, which is based on data from wine sales at Drouot. Finally, the last chapter compares the revenues obtained in discriminatory and uniform auctions of French treasury bills.