The national market shares of the leading US firms in many industries have risen substantially over the last four decades - ie, these industries have become more concentrated. David Autor, Christina Patterson and John Van Reenen show that the local concentration of sales in the US has also risen, while the concentration of local employment has fallen. The authors argue that these divergent trends are driven by the structural transformation of US economic activity.

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12 April 2023

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Vox EU

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https://cepr.org/voxeu/columns/local-concentration-and-structural-transformation

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