We use French data over the 1994-2013 period to study how imports of industrial robots affect firm-level outcomes. Compared to other firms operating in the same 5-digit sector, robot importers are larger, more productive, and employ a higher share of managers and engineers. Over time, robot...

We use French data over the 1994-2013 period to study how imports of industrial robots affect firm-level outcomes. Compared to other firms operating in the same 5-digit sector, robot importers are larger, more productive, and employ a higher share of managers and engineers. Over time, robot...

We use transaction-level US import data to compare firms from virtually all countries in the world competing in a single destination market. Guided by a simple theoretical framework, we decompose countries. market shares into the contribution of the number of firm-products, their average...

We use transaction-level data to study changes in the concentration of US imports. Concentration has fallen in the typical industry, while it is stable by industry and origin country. The fall in concentration is driven by the extensive margin: the number of exporting firms has grown, and the...

We study the effect of Artificial Intelligence (AI) on employment across US commuting zones over the period 2000-2020. A simple model shows that AI can automate jobs or complement workers, and illustrates how to estimate its effect by exploiting variation in a novel measure of local exposure to...

We study how financial frictions affect firm-level heterogeneity and trade. We build a model where productivity differences across monopolistically competitive firms are endogenous and depend on investment decisions at the entry stage. By increasing entry costs, financial frictions lower the...