In this paper we investigate the concentration in health insurance sector in Brazil. In order to conduct this analysis it is necessary to establish the definition of relevant market in product and geographical dimensions. In this paper we apply a methodology based on gravitation models to define...

The antitrust policy is built through antitrust agency's decisions that are, in Brazil, pronounced by CADE. To appraise CADE's decisions, thus, is to appraise the antitrust policy in Brazil. This implies that is necessary to know if such decisions are consistent with the antitrust theory. The...