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Risikomessung mit VaR für Portfolios: Diskussion und empirischer Vergleich verschiedener Berechnungsmethoden

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  • Böhmer, Ekkehart
  • Sperlich, Stefan

Abstract

In dieser Arbeit werden zwei Methoden zur Ermittlung der Eigenkapitalunterlegung von Risikopositionen und die Auswirkungen unterschiedlicher Verteilungsannahmen auf das Value-at-Risk (VaR) untersucht. Die empirischen Ergebnisse basieren auf zwei Beispielportfolios aus DAX-Aktien und einer Simulationsstudie. Wir zeigen, daß sich Verteilungen, die sich gut zur Beschreibung von Aktienrenditen eignen, nicht unbedingt zur Kalkulation des VaR für Portfolios verwendet werden sollten. Dieses Ergebnis erweitert bisherige Analysen des VaR-Ansatzes, die oft nur das Risiko einzelner Aktien analysieren, obwohl in der Praxis meist die Risiken von Portfolios unterlegt werden müssen.

Suggested Citation

  • Böhmer, Ekkehart & Sperlich, Stefan, 1997. "Risikomessung mit VaR für Portfolios: Diskussion und empirischer Vergleich verschiedener Berechnungsmethoden," SFB 373 Discussion Papers 1997,64, Humboldt University of Berlin, Interdisciplinary Research Project 373: Quantification and Simulation of Economic Processes.
    • Handle: RePEc:zbw:sfb373:199764
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    References listed on IDEAS

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    1. Blattberg, Robert C & Gonedes, Nicholas J, 1974. "A Comparison of the Stable and Student Distributions as Statistical Models for Stock Prices," The Journal of Business, University of Chicago Press, vol. 47(2), pages 244-280, April.
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