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...

This comment responds to the request by the Federal Trade Commission and the Department of Justice’s Antitrust Division for public comment on the draft 2020 Vertical Merger Guidelines. In this comment, we show that there is an inherent loss of an indirect competitor and competition when a...

Merger enforcement today relies on settlements more than litigation to resolve anti-competitive concerns. The impact of settlement policy on welfare and the proper goals of settlement policy are highly controversial. Some argue that gun-shy agencies settle for too little while others argue that...

This article summarizes merger enforcement data for the period between 2001 and 2020, using a database created by the authors. The database lists the identity and outcome of every transaction that received a second request during this 20-year period. The database also lists the identity and...

The DOJ/ FTC Vertical Merger Guidelines (VMGs) were adopted by the FTC in June 2020 by a party-line 3-2 party line over the dissent of the Acting Chair. One might expect that the VMGs will be withdrawn and/or revised, now that there is a Democratic majority. Revision is appropriate because the...

There seems to be consensus that the Department of Justice's 1984 Vertical Merger Guidelines do not reflect either modern theoretical and empirical economic analysis or current agency enforcement policy. Yet widely divergent views of preferred enforcement policies have been expressed among...

The FTC and DOJ requested comments on their draft Vertical Merger Guidelines in January 2020. This article is a complete alternative set of suggested Vertical Merger Guidelines that reflects and supplements the approach explained in the comments submitted by the author along with Jonathan....