There is a growing concern that U.S. merger control may have been too lenient, but empirical evidence remains limited. Event studies have been used as one method to acquire empirical insights into the competitive effects of mergers. However, existing work suffers from strong identifying...

There is a growing concern that U.S. merger control may have been too lenient, but empirical evidence remains limited. After reviewing event studies as a method to acquire empirical insights into the competitive effects of mergers, I propose a novel application using Hoberg-Phillips TNIC data....

Mergers between competitors (i.e. horizontal mergers) come with two key theories of harm: unilateral effects and coordinated effects. In this paper, we review the appropriate economic framework for assessing coordinated effects in the context of a merger review. We focus on the three necessary...