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American Economic Review: Vol. 97 No. 1 (March 2007)

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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

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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Sutton, John


American Economic Review


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