in the Horizontal Merger Guidelines. Through a model of enforcement, we find that agencies challenge mergers they expect …We document the effects of a comprehensive set of US retail mergers. On average, prices increase by 1.5% and quantities … decrease by 2.3%, with significant heterogeneity in outcomes across mergers. Price changes correlate with the screens codified …

in the Horizontal Merger Guidelines. Through a model of enforcement, we find that agencies challenge mergers they expect …We document the effects of a comprehensive set of US retail mergers. On average, prices increase by 1.5% and quantities … decrease by 2.3%, with significant heterogeneity in outcomes across mergers. Price changes correlate with the screens codified …

We argue that mergers among market laggards (new entrants or innovation challengers) should be treated differently than … those involving leaders (established players or first-mover innovators). We show that these mergers can be rivalry …, which may not be possible since entry decisions are secret. By removing or mitigating this coordination failure, a merger …

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 …. The presumption seems to be that efficiencies from these mergers are sizeable. We calculate the compensating efficiencies …

merger enforcement. The policy debate shows that one of the key arguments put forward when supporting potential mergers is … the possibility of realization of merger efficiency gains, specifically in the transport industry. Yet, there exists … little empirical evidence on the actual effects of realized mergers on cost efficiencies. We exploit a large and highly …

We describe a simple initial indicator of whether a proposed merger between rivals in a differentiated product industry … from the merger, based on the price/cost margins of the merging firms' products and the extent of direct substitution …

This paper explores the use of collusion theories in merger analysis at the Federal Trade Commission. The 1992 Merger … paper undertakes a systematic review of 75 merger decisions filed between 1993 and 2005 to identify the conditions that are …