Evidence for the Effects of Mergers on Market Power and Efficiency
January 2016
Working Paper Number:
CES-16-43
Abstract
Study of the impact of mergers and acquisitions (M&As) on productivity and market power has been complicated by the difficulty of separating these two effects. We use newly-developed techniques to separately estimate productivity and markups across a wide range of industries using confidential data from the U.S. Census Bureau. Employing a difference-in-differences framework, we find that M&As are associated with increases in average markups, but find little evidence for effects on plant-level productivity. We also examine whether M&As increase efficiency through reallocation of production to more efficient plants or through reductions in administrative operations, but again find little evidence for these channels, on average. The results are robust to a range of approaches to
address the endogeneity of firms' merger decisions.
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:
production,
estimating,
aggregation,
sale,
earnings,
merger,
acquisition,
efficiency,
consolidated,
acquired,
acquirer,
revenue,
economically,
mergers acquisitions
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:
Standard Industrial Classification,
Longitudinal Research Database,
Total Factor Productivity,
2SLS,
Longitudinal Business Database,
Department of Economics,
Securities Data Company,
Generalized Method of Moments,
Board of Governors,
North American Industry Classification System,
Census Bureau Business Register
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