Economic analysis of competition regulation is most developed in the domain of horizontal mergers, and modern agency guidelines reflect a substantial consensus on the appropriate template for merger assessment. Nevertheless, official protocols are understood to rest on a problematic market...

This article explores the many ways that entry is relevant to horizontal merger analysis.Only one, however, is part of the current canon, and it is handled incorrectly. The analysisdraws on work in industrial organization economics that examines entry in imperfectlycompetitive markets. Ex post...

The merits of capital levies depend on the likelihood of repetition, the extent of anticipation, and its effects on distribution. The relevance of these features, which in varying degrees is underdeveloped or underappreciated in pertinent literatures, is elaborated and then considered with...

This article examines optimal policy toward coordinated oligopolistic price elevation. First, it analyzes the social welfare implications of enforcement, elaborating the value of deterrence and the nature of possible chilling effects. Then, it explores a variety of means of detection, with...

This is a survey of the economic principles that underlie antitrust law and how those principles relate to competition policy. We address four core subject areas: market power, collusion, mergers between competitors, and monopolization. In each area, we select the most relevant portions of...

The flow of resources across sectors to their best use, with concomitant entry and exit, is central to the functioning and welfare properties of a market economy. Nevertheless, most industrial organization research, including applications to competition policy, undertakes partial equilibrium...