Antitrust & Competition Policy Blog

Editor: D. Daniel Sokol
University of Florida
Levin College of Law

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Sunday, March 2, 2008

Market Concentration in the Antitrust Analysis of Horizontal Mergers

Posted by D. Daniel Sokol

Jbaker Jonathan Baker of American University's Washington College of Law provides an important contribution to this literature in his piece Market Concentration in the Antitrust Analysis of Horizontal Mergers by providing one stop shopping for those looking to better understand the literature of market concentration issues.

ABSTRACT: This handbook chapter will appear in Antitrust Law & Economics (Keith Hylton, ed. forthcoming 2009). It describes the role of market concentration in the legal framework for the antitrust review of horizontal mergers and evaluates the extent to which modern economic analysis supports a role for concentration in that review. The chapter examines market definition, the predicate for measuring market shares and market concentration, and the role of market shares and concentration in the analysis of the coordinated and unilateral competitive effects of merger. The central issue considered is when and how market shares, and market concentration statistics derived from them, form an appropriate basis for presuming harm to competition from merger.

http://lawprofessors.typepad.com/antitrustprof_blog/2008/03/market-concentr.html

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