There is a widespread belief that increases in the cross-border integration of markets are associated with increases in global concentration along various dimensions. This article reviews the available evidence and presents new data, indicating that increasing global integration has not been...

Diversified business groups dominate the private sectors of most of the world's economies. Several of these economies have undergone sudden policy changes that significantly increase competitive intensity. We demonstrate how the changes in corporate scope that accompany such "competitive shocks"...