We study the evolution of EC merger decisions over the first 25 years of common European merger policy. Using a novel … dataset at the level of the relevant antitrust markets and containing all merger cases scrutinized by the Commission over the … 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 … concerns about the Commission’s merger enforcement being too lax …

We study the effect of a merger between two Dutch supermarket chains to assess its effect on the depth as well as … composition of assortment. We adopt a difference-in-differences strategy that exploits local variation in the merger’s effects …, controlling for selection on observables through a matching procedure when defining our control group. We show that the merger led …

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

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 …

-level uncertainty is characterized by a pecking order: the announcement of a domestic takeover leads to a reduction in the uncertainty …

post-merger efficiency improvements to reveal a new margin of adjustment along the product dimension. We analyze horizontal … between differentiated varieties. After a merger, acquirers drop products from their consolidated domestic product portfolio … and reallocate assets towards core varieties. We further demonstrate that such merger-induced efficiency gains imply …