[en] There is no summary indicator of firm concentration, but a multitude of \textit{ad hoc} indicators that provide different and even contradictory results on the empirical distributions of firms. In this paper, I propose a definition of firm concentration and an Euclidean summary indicator of it. This indicator is then applied to a comprehensive database on the employment of firms in Belgium between 2006 and 2012.
Research Center/Unit :
HEC Recherche. Economic analysis and policy - ULiège
