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Project Citation: 

Kwon, Spencer , Ma, Yueran, and Zimmermann, Kaspar. Data and Code for: 100 Years of Rising Corporate Concentration. Nashville, TN: American Economic Association [publisher], 2024. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2024-06-12. https://doi.org/10.3886/E197985V1

Project Description

Summary:  View help for Summary
We collect data on the size distribution of U.S. businesses for 100 years, and use these data to estimate the concentration of production (e.g., asset share or sales share of  top businesses). The data show that concentration has increased persistently over the past century. Rising concentration was stronger in manufacturing and mining before the 1970s, and stronger in services, retail, and wholesale after the 1970s. The results are robust to different measurement methods and consistent across different historical sources. Our findings suggest that large firms have become more important in the U.S. economy for a long period of time.

Scope of Project

JEL Classification:  View help for JEL Classification
      E01 Measurement and Data on National Income and Product Accounts and Wealth; Environmental Accounts
      E23 Macroeconomics: Production
      L11 Production, Pricing, and Market Structure; Size Distribution of Firms
      L25 Firm Performance: Size, Diversification, and Scope
      N12 Economic History: Macroeconomics and Monetary Economics; Industrial Structure; Growth; Fluctuations: U.S.; Canada: 1913-
Geographic Coverage:  View help for Geographic Coverage US
Time Period(s):  View help for Time Period(s) 1918 – 2018


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