This article reviews the empirical evidence on firm heterogeneity in international trade. A first
wave of empirical findings from microdata on plants and firms proposed challenges for …

This article reviews the recent theoretical literature on heterogeneous firms and trade, which
emphasizes firm selection into international markets and reallocations of resources across …

This paper examines how prices, markups, and marginal costs respond to trade
liberalization. We develop a framework to estimate markups from production data with multi …

We develop and structurally estimate a model of heterogeneous multiproduct firms that can
be used to decompose the firm-size distribution into the contributions of …

Research in international trade has changed dramatically over the last twenty years, as
attention has shifted from countries and industries towards the firms actually engaged in …

Micro-level data have had a profound influence on research in international trade over the
last ten years. In many regards, this research agenda has been very successful. New …

This article explores how reductions in tariffs on imported inputs and final goods affect the
productivity of large Chinese trading firms, with the special tariff treatment that processing …

We build a theoretical model of multi-product firms that highlights how competition across
market destinations affects both a firm's exported product range and product mix. We show …

This article develops a general equilibrium model of multiple-product, multiple-destination
firms, which allows for heterogeneity in ability across firms and in product attributes within …

Trade is a cornerstone concept in economics worldwide. This updated second edition of the
essential graduate textbook in international trade brings readers to the forefront of …