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Sur la distribution bimodale du ratio de spécialisation des entreprises non financières



The bimodal distribution of the specialization ratio for large non-financial corporations has been a remarkable statistical regularity for forty years (Reed and Sharpe, 1987). The aim of this paper is first to provide an overview on the reality of this phenomenon over the period 1992-2007 in Europe and in the United States. Then, we try to identify some of the industrial dynamics which explain this distribution. We think here to the way the changes in the value of this ratio can be used to interpert the development strategies of firms in terms of diversification and refocusing

Suggested Citation

  • Hafida El Younsi & Didier Lebert, 2013. "Sur la distribution bimodale du ratio de spécialisation des entreprises non financières," Documents de travail du Centre d'Economie de la Sorbonne 13067, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
  • Handle: RePEc:mse:cesdoc:13067

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    References listed on IDEAS

    1. Halbert White & Xun Lu, 2010. "Granger Causality and Dynamic Structural Systems," Journal of Financial Econometrics, Society for Financial Econometrics, vol. 8(2), pages 193-243, spring.
    2. Nikolay Nenovsky & S. Statev, 2006. "Introduction," Post-Print halshs-00260898, HAL.
    3. Bücher, Axel & Dette, Holger, 2010. "A note on bootstrap approximations for the empirical copula process," Statistics & Probability Letters, Elsevier, vol. 80(23-24), pages 1925-1932, December.
    4. repec:sae:ecolab:v:16:y:2006:i:2:p:1-2 is not listed on IDEAS
    5. repec:taf:jnlbes:v:30:y:2012:i:2:p:275-287 is not listed on IDEAS
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    Diversification; refocusing; specialization ratio;

    JEL classification:

    • L25 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Performance

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