Recently, the U.S. Department of Justice and Federal Trade Commission have embarked on an effort to revise and update the U.S. Horizontal Merger Guidelines. There is substantial overlap between the U.S. and E.U. Guidelines, which makes a proposal for U.S. revisions immediately applicable to the...

Merger simulation is growing in importance as a tool to evaluate the unilateral competitive effects of mergers. This paper offers a relatively non-technical description of the principles of merger simulation. In addition, it introduces PCAIDS, a new and highly flexible "calibrated-demand" merger...

This article evaluates two different remedies for consumers who have been injured by a price overcharge on the sale of a good. Under a coupon remedy, injured consumers are awarded coupons that can be used for a limited period of time to purchase the good at a price below that which prevails...

We present a method to calibrate empirically the demand parameters in a merger simulation model by using brand-level profit margin data. While the approach can be generalized, we develop these ideas within a particular framework — the PCAIDS (proportionality-calibrated AIDS) model. We...