This paper presents an analysis of merger enforcement at the Federal Trade Commission under the 1992 Merger Guidelines. Econometric analysis suggests that enforcement decisions are best predicted with the Herfindahl when the relevant theory is collusion and the number of significant rivals when...

The Hart Scott Rodino program, coupled with the modern Merger Guidelines, has structured merger enforcement for the last twenty years. This paper tabulates and evaluates information from Federal Trade Commission merger reviews. While horizontal mergers predominate, vertical, potential...

<title>Abstract</title> <italic>This paper models the Federal Trade Commission's (FTC) unilateral effects merger policy using a sample of 192 investigations undertaken between 1993 and 2010</italic>. <italic>Statistical analysis shows that the number of significant rivals represents a reasonable structural proxy for the FTC' merger...</italic>

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