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American Economic Review: Vol. 97 No. 1 (March 2007)
AER Volume. 97, Issue 1 | 
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Market Share Dynamics and the "Persistence of Leadership" Debate
Article Citation
Sutton, John. 2007. "Market Share Dynamics and the "Persistence of Leadership" Debate."
American Economic Review,
97(1): 222-241.
DOI: 10.1257/aer.97.1.222
DOI: 10.1257/aer.97.1.222
Abstract
A new 45-industry, 23-year, dataset for Japan is used to investigate the duration of
industry leadership. A new scaling relationship linking a firm's current market
share with the standard deviation of market share changes is reported. This
relationship discriminates in a powerful way between rival candidate theoretical
models of market share dynamics. It also makes possible a useful simplification in
testing a benchmark model of a Markovian kind. Relative to that model, it is found
that at least some industries display a "Chandlerian" bias toward longer durations
of leadership than would be present in the benchmark model. (JEL D43, L13)
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Authors
Sutton, John
