We disentangle the contribution of unobserved heterogeneity in idiosyncratic demand and productivity to firm growth. We use a model of monopolistic competition with Cobb-Douglas production and a data set of Italian manufacturing firms containing unique information on firm-level prices to...

We study a tractable model of firm price setting with customer markets and empirically evaluate its predictions. Our framework captures the dynamics of customers in response to a change in the price, describes the behavior of optimal prices in the presence of customer acquisition and retention...