Market Definition in Merger Analysis
Serge Moresi, Steven C. Salop, John R. Woodbury
Abstract
Serge Moresi, Steven C. Salop, John R. Woodbury
Abstract
In this short and mainly expository article, we explain the “hypothetical monopolist test” that has become the standard methodology for identifying relevant antitrust markets in merger cases, and discuss two approaches to implementing the test. We then focus on the implementation of the test when firms offer multiple products or services, either inside or outside the candidate market, and discuss the “hypothetical cartel test” introduced in the 2010 U.S. Merger Guidelines.
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In this short and mainly expository article, we explain the “hypothetical monopolist test” that has become the standard methodology for identifying relevant antitrust markets in merger cases, and discuss two approaches to implementing the test. We then focus on the implementation of the test when firms offer multiple products or services, either inside or outside the candidate market, and discuss the “hypothetical cartel test” introduced in the 2010 U.S. Merger Guidelines.
Key concepts: Market definition, Cartel, Merger guidelines, Test (biology), Relevant market, Economics, Focus (optics), Industrial organization