Antitrust policy in the United States and Europe relies increasingly on economic analysis. Economic theory and empirical analysis play a central role in antitrust decisions in the courts and in the formulation and enforcement of policy. Antitrust cases are argued using sophisticated economic...

An increasing body of empirical evidence is documenting trends toward rising concentration, profits, and markups in many industries around the world since the 1980s. Two major criticisms of these studies is that concentration and market shares are poorly measured at the national industry level...

An increasing body of empirical evidence is documenting trends toward rising concentration, profits, and markups in many industries around the world since the 1980s. Two major criticisms of these studies is that concentration and market shares are poorly measured at the national industry level...