New Trends In U.S. Industrial Concentration

Document Type

Article

Publication Date

5-1-2001

Published In

Review Of Industrial Organization

Abstract

Using weighted concentration ratios for the entire economy, I argue that industrial concentration decreased in the U.S. from 1960 to the early 1980s and then began to increase. This rise in the last two decades of the 20th century offsets any counteracting affects stemming from the growth of use of information technology in production or from imports and appears due primarily to the impact of the merger wave starting in the mid 1980s. I also consider briefly the relationship between increasing market concentration and a change in market competition, taking into account the expansion of e-commerce.

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