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Dynamics of Market Power and Concentration Profiles

Author

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  • Esfandiar Maasoumi
  • Daniel Slottje

Abstract

This paper examines some of the economic and econometric issues that arise in attempting to measure the degree of concentration in an industry and its dynamic evolution. A general axiomatic basis is developed. We offer new measures of concentration over aggregated periods of time and provide a sound statistical basis for inferences. Concentration is one aspect of the problem of measuring “market power” within an industry. Modern economic analysis of antitrust issues does not focus only on the level of concentration, but still must examine the issue carefully. We contrast concentration at a point in time with a dynamic profile of change in the distribution of shares in a given market. Our methods are demonstrated with an application to the US steel industry.

Suggested Citation

  • Esfandiar Maasoumi & Daniel Slottje, 2003. "Dynamics of Market Power and Concentration Profiles," Econometric Reviews, Taylor & Francis Journals, vol. 22(2), pages 155-177.
    • Handle: RePEc:taf:emetrv:v:22:y:2003:i:2:p:155-177
    DOI: 10.1081/ETC-120020461
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    Cited by:

    1. Anthony N. Rezitis & Maria A. Kalantzi, 2016. "Evaluating the state of competition and the welfare losses in the Greek manufacturing sector: an extended Hall–Roeger approach," Empirical Economics, Springer, vol. 50(4), pages 1275-1302, June.
    2. Rezitis Anthony & Kalantzi Maria, 2012. "Measuring Market Power and Welfare Losses in the Greek Food and Beverages Manufacturing Industry," Journal of Agricultural & Food Industrial Organization, De Gruyter, vol. 10(1), pages 1-33, April.

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