Diverging Trends in National and Local Concentration

Esteban Rossi-Hansberg, Nicholas Trachter and Pierre Daniel Sarte

No 167, 2019 Meeting Papers from Society for Economic Dynamics

Abstract: Using U.S. NETS data, we present evidence that the positive trend observed in national product-market concentration between 1990 and 2014 becomes a negative trend when we focus on measures of local concentration. We document diverging trends for several geographic definitions of local markets. SIC 8 industries with diverging trends are pervasive across sectors. In these industries, top firms have contributed to the amplification of both trends. When a top rm opens a plant, local concentration declines and remains lower for at least 7 years. Our findings, therefore, reconcile the increasing national role of large firms with falling local concentration, and a likely more competitive local environment.

Date: 2019
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Related works:
Journal Article: Diverging Trends in National and Local Concentration (2021)
Chapter: Diverging Trends in National and Local Concentration (2020)
Working Paper: Diverging Trends in National and Local Concentration (2018)
Working Paper: Diverging Trends in National and Local Concentration (2018)
Working Paper: Diverging Trends in National and Local Concentration (2018)
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Persistent link: https://EconPapers.repec.org/RePEc:red:sed019:167

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