Why ex-post evaluation is so important (and so little used) in antitrust

By Juan Delgado and Hector Otero

This article explores why the ex-post analysis of antitrust and mergers decisions is important, how it can be performed and what the obstacles to the implementation of ex-post evaluation programs are. The ex-post analysis of competition policy is essential in order to evaluate the extent to which competition policy is being useful to society. Despite the fact that the role of competition policy has become increasingly important throughout the world and the number