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Der Einfluss von Diversifikationsstrategien auf den Aktienkurs deutscher Unternehmen

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  • Michael H. Grote
  • Marc Rustige

Abstract

Sowohl die Diversifikation als auch die Fokussierung von Unternehmensaktivitäten werden häufig mit der Maximierung des Unternehmenswertes begründet. Wir untersuchen die Auswirkungen auf den Aktienkurs für 184 Akquisitionen sowie 139 Desinvestitionen deutscher Konzerne im Zeitraum von 1996-2005. Unternehmensdiversifikationen üben, entgegen der oft geäußerten Kritik, keinen signifikant negativen Einfluss auf den Marktwert aus. Fokussierende Unternehmensakquisitionen hingegen sind mit einem signifikanten Wertaufschlag verbunden. Der Verkauf von Unternehmensteilen führt generell zu einer Marktwertsteigerung. Dabei führen Abspaltungen außerhalb des Kerngeschäfts zu einer – allerdings insignifikant – höheren Wertsteigerung als Desinvestitionen von Kerngeschäftsaktivitäten. Statt eines systematischen Diversifikationsabschlags finden wir somit einen „Fokussierungsaufschlag“ für den deutschen Markt.

Suggested Citation

  • Michael H. Grote & Marc Rustige, 2008. "Der Einfluss von Diversifikationsstrategien auf den Aktienkurs deutscher Unternehmen," Working Paper Series: Finance and Accounting 186, Department of Finance, Goethe University Frankfurt am Main.
    • Handle: RePEc:fra:franaf:186
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    More about this item

    JEL classification:

    • G34 - Financial Economics - - Corporate Finance and Governance - - - Mergers; Acquisitions; Restructuring; Corporate Governance
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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