We evaluate two alternative models of international trade in differentiated products. An increasing returns model where varieties are linked to firms predicts home market effects: increases in a country's share of demand cause disproportionate increases in its share of output. In contrast, a...

Quantifications of gains from trade in heterogeneous firm models assume that productivity is Pareto distributed. Replacing this assumption with log-normal heterogeneity retains some useful Pareto features, while providing a substantially better fit to sales distributions-especially in the left...

Antidumping (AD) trade protection policies allow government agencies to recalculate AD duties based on foreign firms' most recent pricing behavior. We examine the resulting dynamic pricing problem of a foreign firm facing such policy. We show that the expected pattern of AD duty recalculations...

This reply responds to a comment that correctly identifies an invalid assumption in our original article that antidumping (AD) duties are subtracted from the U.S. price when calculating AD duties in administrative reviews. While this point invalidates our theoretical explanation and empirical...