The buyer margins of firms' exports

• 成果类型: Article
• 署名作者: Carballo, Jeronimo; Ottaviano, Gianmarco I. P.; Martincus, Christian Volpe
• 署名单位: University of Colorado System; University of Colorado Boulder; Bocconi University; University of London; London School Economics & Political Science; University of London; London School Economics & Political Science; Centre for Economic Policy Research - UK; Inter-American Development Bank
• 刊物名称: JOURNAL OF INTERNATIONAL ECONOMICS
• ISSN/ISSBN: 0022-1996
• DOI: 10.1016/j.jinteco.2018.02.001
• 发表日期: 2018
• 页码: 33-49
• 关键词: Firm heterogeneity; Taste heterogeneity; Import-export relations; COMPETITION; selection

摘要

We use detailed data on exporters from Costa Rica, Ecuador and Uruguay as well as on their buyers to show that: aggregate exports are disproportionally driven by few multi-buyers exporters; and each multi buyer exporter's foreign sales of any product in a given destination are in turn accounted for by a dominant buyer. We propose an analytically solvable multi-country model of endogenous selection in which dominant exporters, dominant products and dominant buyers emerge in parallel as multi-product sellers with heterogeneous technologies compete for buyers with heterogeneous needs. The model not only provides an explanation of the existence of dominant buyers but also makes specific predictions on how the relative importance of dominant buyers should vary across export destinations depending on their market size and accessibility. We show that these predictions are borne out by our data and discuss their welfare implications in terms of gains from trade. (C) 2018 Elsevier B.V. All rights reserved.