Tommaso Valletti, Chief Competition Economist at the DG COMP since september 2016, assesses the role of the chief competition economist (CEE) and the necessary interaction between economics and competition law in this interview conducted by Benoît Durand, RBB Economics, Brussels. The chief (...)

In recent decisions involving fast-moving consumer goods, the European Commission has relied on merger simulation models to predict the likely effect of horizontal mergers. Is this the beginning of a new trend? The merger simulation label contains a variety of models, and if all merger (...)

There is no alternative to the hypothetical monopolist test to define the relevant market. Even though the test is difficult to apply, adopting other alternatives such as that advocated by the French competition authority in its merger guidelines is a risky venture. However, the hypothetical (...)

1. L’ADLC s’intéresse beaucoup à la grande distribution. Récemment, elle s’est auto-saisie pour enquêter sur la pratique du “category management” entre les opérateurs de la grande distribution alimentaire et certains de leurs fournisseurs. Par le passé, d’autres autorités de la concurrence se sont (...)

Economic literature is warning us that applying a one-sided market logic in two sided markets is bound to generate some errors when assessing the extent of competition between firms. This article reviews some recent UK merger decisions in two-sided market industries and found that in all (...)