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...

Learning is a subject of intense research in experimental economics. We contribute to this debate by presenting persuasive evidence that learning took place among uninformed heterogeneous agents on a quasi-stock market during a large-scale natural experiment that by size, incentives, and...

To prevent possible abuse of market power in the future an antitrust agency can force merging firms to divest some of their assets. The divested assets can be sold via auction either to existing competitors or to a new entrant. Divesture of assets extends the range of parameters when a merger...