We study the gains from trade in an economy with oligopolistic competition, firm heterogeneity, and innovation …. In addition to markups, selection and innovation provide additional channels through which the trade-induced effect on … channels; we find that innovation plays a small but non-negligible role, while the main component is equally split between the …

We study the gains from trade in a model with oligopolistic competition, heterogeneous firms and innovation, and … concentration contributes substantially to the gains from trade, mostly via its stimulating effect on innovation. Sizeable gains …