has relatively low information requirements. We propose to use the index as a natural complement to concentration measures …

has relatively low information requirements. We propose to use the index as a natural complement to concentration measures …

In the last two decades, over 75% of U.S. industries have experienced an increase in concentration levels. We find that … firms in industries with the largest increases in product market concentration have enjoyed higher profit margins and more … firms, factors that account for foreign competition, as well as to the use of alternative measures of concentration. We also …

to compare different methods that can be used to evaluate merger effects: We perform a concentration analysis based on …

Stackelberg model yields larger welfare and HHI than the Cournot model. Thus, he demonstrates that beneficial concentration occurs …We investigate the relationship between the Herfindahl-Hirschman Index (HHI) and welfare. First, we discuss the model … occur when m is small. Next, we consider the free entry of followers, and find that beneficial concentration always occurs …

concentration, the Hirschman-Herfindahl (HHI) index and the 4-firm and 8-firm concentration ratios, CR4 and CR8, were utilized. Data …This article provides a look at business concentration for sales and assets for the period 1967 to 2002 based on Theil … concentration, the paper found that the inclusion of service firms with the industrial firms in the list of 500 in 1994 somewhat …

has relatively low information requirements. We propose to use the index as a natural complement to concentration measures …