and targets and use appropriate difference-in-difference estimation methods to single out the causal effect of mergers on …

Worldwide, the overwhelming majority of large horizontal mergers are cleared by antitrust authorities unconditionally …. The presumption seems to be that efficiencies from these mergers are sizeable. We calculate the compensating efficiencies … that would prevent a merger from harming consumers for 1,014 mergers affecting 12,325 antitrust markets scrutinized by the …

. Since retail mergers may have either local or national effects (or both) according to the level at which retail chains set …

This paper presents a broad retrospective evaluation of mergers and merger decisions in the digital sector. We first … theories of harm in major merger cases in the past few years. We then analyse the characteristics of almost 300 acquisitions … investigated mergers and whether a more effective merger control regime can be achieved within the current legal framework. …