standards in the horizontal merger guidelines. Combined, the breakdown of the antitrust regulatory sandbox threatens innovation …, creates additional costs to the merger system, and chills the types of mergers that should be made. To the extent that the …

, and innovation. He describes examples of merger enforcement by US and European antitrust agencies; examines cases brought …

This study examines how antitrust law adoptions affect horizontal merger and acquisition (M&A) outcomes. Using the …-day cumulative abnormal returns surrounding horizontal merger announcements. A decrease in deal value, target book assets, and … treatment effects does not nullify our results. Overall, antitrust policies seem to deter post-merger monopolistic gains …