use a novel database that identifies over 20,000 product/geographic antitrust markets affected by over 2,000 mergers … scrutinized by the European Commission between 1995 and 2014. We show that concentration, as measured by the market-specific post-merger … dimension analyzed. Strict past merger enforcement negatively correlates with concentration. Yet, this effect is stronger in the …

. The antitrust agency’s incentives to produce evidence on the efficiency of a merger proposal depend critically on its …We analyze evidence production in merger control as a delegation problem in an inquisitorial competition policy system … implemented only after evidence on the efficiency of a merger proposal has been produced. …

We study upstream horizontal mergers and their potential efficiency gains. We show that an upstream horizontal merger … and decreases wholesale prices when downstream competition is not too strong. Examining whether the merger’s potential …

find interesting results linking patents to GM's bankruptcy, the Daimler-Chrysler merger, environmental regulations …

Traditional economic theory of collusion assumed that cartels are inherently unstable, and yet some manage to operate …

dataset at the level of the relevant antitrust markets and containing all merger cases scrutinized by the Commission over the …We study the evolution of EC merger decisions over the first 25 years of common European merger policy. Using a novel … definition and the complexity of the merger. Simple, linear probability models as usually applied in the literature overestimate …

that would prevent a merger from harming consumers for 1,014 mergers affecting 12,325 antitrust markets scrutinized by the …Worldwide, the overwhelming majority of large horizontal mergers are cleared by antitrust authorities unconditionally … concerns about the Commission’s merger enforcement being too lax. …

We modify the UPP test of Farrell and Shapiro (2010) to take into account the possibility that a merger weakens (or … eliminates) a vertical supply relationship. After deriving a general effect of the merger, we provide an example of simple …

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 … important merger cases, Facebook/Instagram and Google/Waze, providing a systematic assessment of the theories of harm considered …