This study presents a laboratory experiment of the first and second price sealed bid auctions with independent private values, where the distribution of bidder valuations is unknown. In our experimental setting, in first price auctions, bids are lower with the presence of ambiguity. This result...

The paper analyzes the essential properties of bidder equilibrium strategies in the multi-unit uniform-price auction. In the auction the seller offers several identical units for sale, specifies a minimum accepted bid (reservation price) and sets maximum number of bids that any bidder can...

I show that in a private value multi-unit uniform-price auction, the reservation price increases both the efficiency and revenue. In equilibrium the difference between the true value of a unit and the submitted bid (shading) is different for each unit; therefore, the seller cannot allocate units...