We discuss competition among payment card networks, and in particular how antitrust practitioners might approach questions of market definition and market power in these markets. Application of the hypothetical monopolist test to define markets, and the use of traditional metrics to measure...

This paper covers the activities of the Economic Analysis Group (EAG), during 2004–2005. It describes the economic analysis undertaken by EAG in several important investigations, appellate matters, and other activities as an advocate for competition. Copyright Springer 2005

This paper covers the activities of the Economic Analysis Group (EAG) of the Antitrust Division, U.S. Department of Justice, during 2005–2006. It describes the economic analysis undertaken by EAG in several important investigations, appellate matters, and other activities as an advocate for...