Template-Type: ReDIF-Paper 1.0 Title: Anticompetitive Vertical Merger Waves Author-Name: Johan Hombert Author-Email: hombert@hec.fr Author-Name: Jérôme Pouyet Author-Email: pouyet@essec.edu Author-Name: Nicolas Schutz Author-Email: schutz@uni-mannheim.de Classification-JEL: L13 Keywords: vertical mergers, vertical foreclosure, merger waves, merger policy Abstract: We develop a model of vertical merger waves and use it to study the optimal merger policy. As a merger wave can result in partial foreclosure, it can be optimal to ban a vertical merger that eliminates the last unintegrated upstream firm. Such a merger is more likely to worsen market performance when the number of downstream firms is large relative to the number of upstream firms, and when upstream contracts are nondiscriminatory, linear, and public. On the other hand, the optimal merger policy can be non-monotonic in the strength of synergies or in the degree of downstream product differentiation. Note: Length: 32 Creation-Date: 2019-04 Revision-Date: File-URL: https://www.crctr224.de/research/discussion-papers/archive/dp084 File-Format: application/pdf Handle: RePEc:bon:boncrc:CRCTR224_2019_084