From Good to Bad Concentration? U.S. Industries over the past 30 years
NBER Working Paper No. 25983
---- Acknowledgments ----
This paper was prepared for the NBER Macroeconomics Annual 2019. Some of the results presented below were first published in Gutiérrez and Philippon (2017a). We are grateful to the Smith Richardson Foundation for a research grant; to Janice Eberly and Chad Syverson for their discussion; and to Erik Hurst and participants at the NBER Macro Annual conference for helpful comments and suggestions. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.