We study, both theoretically and empirically, how trade imbalances affect the structure of countries exports and wage inequality. We show that, in a Heckscher-Ohlin model with a continuum of goods, a Southern (Northern) trade surplus leads to an increase (reduction) in the average skill...

We study the equilibrium determinants of firm-level heterogeneity in a model in which firms can affect the variance of their productivity draws at the entry stage and explore the implications in closed and open economy. By allowing firms to choose the size of their investment in innovation...