The important changes recently made in Mexico to the antitrust law are considered a big step for our country, legislatively as well as in practice.Concentrations have become an area of considerable global importance due to the relevance of the investments flow in each country. In this regard, it is important to have a legal system that provides for efficiency, continuity and success in these kinds of operations, always maintaining the necessary control over markets in order to avoid monopolies and incentivise fair competition.