This paper examines the understanding of business concentration through the Herfindahl- Hirschman Index (HHI), by … showing that this index is conceptually a model according to which this concentration is the consequence of a renewal process … into differing concentration levels attributable only to the economic activity with which firms vie. As a consequence …

Using U.S. NETS data, we present evidence that the positive trend observed in national product-market concentration … between 1990 and 2014 becomes a negative trend when we focus on measures of local concentration. We document diverging trends … concentration declines and remains lower for at least seven years. Our findings, therefore, reconcile the increasing national role …

correlated with the level of submarket concentration. There is scant evidence of entry persistence into new submarkets, as …

This article derives a European Herfindahl-Hirschman concentration index from 15 micro-aggregated country datasets. In … the last decade, European concentration rose due to a reallocation of economic activity towards large and concentrated … markups stayed constant. Using country-industry variation, we show that changes in concentration are positively associated …

This article derives a European Herfindahl-Hirschman concentration index from 15 micro-aggregated country datasets. In … the last decade, European concentration rose due to a reallocation of economic activity towards large and concentrated … markups stayed constant. Using country-industry variation, we show that changes in concentration are positively associated …

explain more of the post-merger evolution of deposit rates than the predicted changes in local market concentration induced by …