Granular Comparative Advantage

• 成果类型: Article
• 署名作者: Gaubert, Cecile; Itskhoki, Oleg
• 署名单位: University of California System; University of California Berkeley; University of California System; University of California Los Angeles
• 刊物名称: JOURNAL OF POLITICAL ECONOMY
• ISSN/ISSBN: 0022-3808
• DOI: 10.1086/712444
• 发表日期: 2021
• 页码: 871-939
• 关键词: INTERNATIONAL-TRADE; economies; origins; welfare; gains; FIRMS

摘要

Large firms play a pivotal role in international trade. We develop a multisector granular model of trade where sectors host a finite number of firms. Both aggregate and granular firm-level forces shape comparative advantage. The model is estimated using French microdata on firm domestic and export sales. We find that granularity accounts for about 20% of the sectoral variation in export intensity and is more pronounced in highly export-intensive sectors. An extension to a dynamic environment with both idiosyncratic and aggregate shocks reveals that firm dynamics plays a central role in shaping comparative advantage reversals observed in the data.