A striking pattern in transaction-level data is the concentration of international shipments in the hands of a few large firms. One common feature of dominating high-performance firms is that they produce multiple products and ship them to many destinations. Motivated by the emergence of highly...

A striking pattern in transaction-level data is the concentration of international shipments in the hands of a few large firms. One common feature of dominating high-performance firms is that they produce multiple products and ship them to many destinations. Motivated by the emergence of highly...

This paper aims at shedding some light on the interactions between international trade and firms' heterogeneity, by proposing a tractable model consistent with the stylised facts unveiled by the recent empirical literature. The model describes, in a general equilibrium framework, two economies...