The Evolution of US Retail Concentration

Dominic Smith and Sergio Ocampo

American Economic Journal: Macroeconomics, 2025, vol. 17, issue 1, 71-101

Abstract: Increasing national concentration has contributed to market power concerns. Yet local trends are more informative about market power in retail, where consumers have traditionally shopped at nearby stores. Using novel product-level census data for all US retailers, we find that local and national concentration increased in parallel and affect most markets, products, and industries. The expansion of multimarket firms into new markets explains most of the increase in national concentration, with consolidation via increases in local market shares increasing in importance between 1997 and 2007. Increases in local concentration can explain one-quarter to one-third of the observed rise in retail gross margins.

JEL-codes: D22 L13 L81 R32 (search for similar items in EconPapers)
Date: 2025
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Related works:
Working Paper: The Evolution of U.S. Retail Concentration (2023)
Working Paper: The Evolution of U.S. Retail Concentration (2022)
Working Paper: The Evolution of U.S. Retail Concentration (2020)
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DOI: 10.1257/mac.20220249

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