Using a new firm-level dataset on private and listed firms from 20 countries, we documentfive stylized facts on market power in global markets. First, competition has declinedaround the world, measured as a moderate increase in average firm markups during 2000-2015. Second, the markup increase...

Keller (1998) reexamines Coe and Helpman`s (1995) analysis of international R&D spillovers focusing on the weights used to define the foreign R&D capital stock. Keller creates random weights and shows that they give rise to positive estimates of international R&D spillovers, casting doubts on...