We show that the number of merger proposals (frequency-based deterrence) is a more appropriate indicator of underlying changes in merger policy than the relative anti-competitiveness of merger proposals (composition-based deterrence). This has strong implications for the empirical analysis of...

This paper discusses the theory and practice of leniency in antitrust enforcement, i.e. the granting of immunity from penalties or the reduction of penalties for antitrust violations in exchange for cooperation with the antitrust enforcement authorities. After a description of the practice of...

In most jurisdictions, antitrust fines are based on affected commerce rather than on collusive profits, and in some others, caps on fines are introduced based on total firm sales rather than on affected commerce. We uncover a number of distortions that these policies generate, propose simple...

This Article investigates whether all stakeholder groups share the same understanding and useof the relevant terms and concepts of the DSA and DMA. Leveraging the power ofcomputational text analysis, we find significant differences in the employment ofterms like “gatekeepers,”...

We hand-collect and standardize information describing all 3,055 antitrust lawsuits brought by the Department of Justice (DOJ) between 1971 and 2018. Using restricted establishment-level microdata from the U.S. Census, we compare the economic outcomes of a non-tradable industry in states...

This paper investigates a dataset that codes key features of the competition laws of 102 countries. It first compares the scope of the laws overall, and of various subcomponents such as the law governing dominance, collusive conduct, and mergers. The second question examined in this paper is...