Concentration is a single summary statistic driven by two opposing forces: the number of firms in a market and the evenness of their market shares. This paper introduces a generalized measure of concentration that allows researchers to vary the relative importance of each force. Using the...

Merger policy is the most active area of U.S. antitrust policy. It is now widely believed that merger policy must move beyond its traditional focus on static efficiency to account for innovation and address dynamic efficiency. Innovation can fundamentally affect merger analysis in two ways....

The present paper analyzes the top ten Italian state-owned enterprises (SOEs) over the period 2004-2013, after both their corporate organization and their markets have been deeply reformed. We question whether SOEs' strategies are more profit or public oriented. The authors find that, on...