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Multivariate extremes and the aggregation of dependent risks: examples and counter-examples

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Properties of risk measures for extreme risks have become an important topic of research. In the present paper we discuss sub- and superadditivity of quantile based risk measures and show how multivariate extreme value theory yields the ideal modeling environment. Numerous examples and counter-examples highlight the applicability of the main results obtained.

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References

  • Aas, K., Dimakos, X.K., Øksendal, A.: Risk capital aggregation. Risk Manage. 9, 82–107 (2007)

    Article  Google Scholar 

  • Albrecher, H., Asmussen, S., Kortschak, D.: Tail asymptotics for the sum of two heavy-tailed dependent risks. Extremes 9, 107–130 (2006)

    Article  MATH  MathSciNet  Google Scholar 

  • Balkema, G., Embrechts, P.: High Risk Scenarios and Extremes. A geometric approach. Zurich Lectures in Advanced Mathematics. European Mathematical Society Publishing House, Zurich (2007)

    Google Scholar 

  • Barbe, P.: Approximation of integrals over asymptotic sets with applications to statistics and probability (2003). http://arxiv.org/abs/math/0312132

  • Barbe, P., Fougères, A., Genest, C.: On the tail behavior of sums of dependent risks. Astin Bull. 36, 361–373 (2006)

    Article  MathSciNet  Google Scholar 

  • Beirlant, J., Goegebeur, Y., Segers, J., Teugels, J.: Statistics of Extremes—Theory and Applications. Wiley, Chichester (2004)

    MATH  Google Scholar 

  • Chavez-Demoulin, V., Embrechts, P., Nešlehová, J.: Quantitative models for operational risk: extremes, dependence and aggregation. J. Bank. Finance 30(10), 2635–2658 (2006)

    Article  Google Scholar 

  • Daníelsson, J., Jorgensen, B.N., Samorodnitsky, G., Sarma, M., de Vries, C.G.: Subadditivity re-examined: the case for Value-at-Risk. FMG Discussion Papers, London School of Economics (2005)

  • Davis, R.A., Resnick, S.I.: Limit theory for bilinear processes with heavy-tailed noise. Ann. Appl. Probab. 6, 1191–1210 (1996)

    Article  MATH  MathSciNet  Google Scholar 

  • Embrechts, P., Klüppelberg, C., Mikosch, T.: Modelling Extremal Events for Insurance and Finance. Springer, Berlin (1997)

    MATH  Google Scholar 

  • Embrechts, P., McNeil, A.J., Straumann, D.: Correlation and dependence in risk management: properties and pitfalls. In: Dempster, M. (ed.) Risk management: value at risk and Beyond, pp. 176–223. Cambridge University Press, Cambridge (2002)

    Google Scholar 

  • Embrechts, P., Nešlehová, J., Wüthrich, M.V.: Additivity properties for Value-at-Risk under Archimedean dependence and heavy-tailedness. Insur. Math. Econ. (2008, in press)

  • Fama, E.T., Miller, M.H.: The Theory of Finance. Dryden, Hinsdale (1972)

    Google Scholar 

  • de Haan, L., Ferreira, A.: Extreme Value Theory, An Introduction. Springer, New York (2006)

    MATH  Google Scholar 

  • Hardy, G.H., Littlewood, J.E., Pólya, G.: Inequalities. Cambridge University Press, Cambridge (1934)

    Google Scholar 

  • Hult, H., Lindskog, F.: Multivariate extremes, aggregation and dependence in elliptical distributions. Adv. Appl. Probab. 34, 587–608 (2002)

    Article  MATH  MathSciNet  Google Scholar 

  • Ibragimov, R., Jaffee, D., Walden, J.: Nondiversification traps in catastrophe insurance markets. Rev. Financ. Stud. (2008, in press)

  • Ibragimov, R., Walden, J.: The limits of diversification when losses may be large. J. Bank. Finance 31(8), 2551–2569 (2007)

    Article  Google Scholar 

  • Jang, J., Jho, J.H.: Asymptotic Super(sub)additivity of Value-at-Risk of Regularly Varying Dependent Variables. Preprint MacQuarie University, Sydney (2007)

    Google Scholar 

  • Jessen, H.A., Mikosch, T.: Regularly varying functions. Publications de l’Institut Mathématique, Nouvelle Série 80, 171–192 (2006)

    MathSciNet  Google Scholar 

  • Joe, H.: Multivariate Models and Dependence Concepts. Chapman and Hall, London (1997)

    MATH  Google Scholar 

  • Mainik, G., Rüschendorf, L.: On optimal portfolio diversification with respect to extreme risks. Preprint Albert-Ludwigs-Universität Freiburg (2008) April 28

  • McNeil, A.J., Frey, R., Embrechts, P.: Quantitative Risk Management: Concepts, Techniques, Tools. Princeton University Press, Princeton (2005)

    Google Scholar 

  • Mikosch, T.: Modeling dependence and tails of financial time series. In: Finkelstädt, B., Rootzén, H. (eds.) Extreme Values in Finance, Telecommunications and the Environment, pp. 185–286. Chapman & Hall, Boca Raton (2004)

    Google Scholar 

  • Mikosch, T.: Copulas: tales and facts. Extremes 9, 3–20 (2006)

    Article  MathSciNet  Google Scholar 

  • Moscadelli, M.: The modelling of operational risk: experience with the analysis of the data collected by the Basel Committee. Bank of Italy, Working Paper No 517 (2004)

  • Nelsen, R.B.: An Introduction to Copulas. Springer, New York (2007)

    Google Scholar 

  • Nešlehová, J., Embrechts, P., Chavez-Demoulin, V.: Infinite mean models and the LDA for operational risk. J. Oper. Risk 1(1), 3–25 (2006)

    Google Scholar 

  • Nešlehová, J., McNeil, A.J.: Multivariate Archimedean copulas, d-monotone functions and l 1-norm symmetric distributions. Ann. Stat. (2008, in press)

  • Resnick, S.I.: Extreme Values, Regular Variation, and Point Processes. Springer, New York (1987)

    MATH  Google Scholar 

  • Resnick, S.I.: The extremal dependence measure and asymptotic independence. Stoch. Models 20, 205–227 (2004)

    Article  MATH  MathSciNet  Google Scholar 

  • Resnick, S.I.: Heavy-Tail Phenomena: Probabilistic and Statistical Modeling. Springer, New York (2007)

    MATH  Google Scholar 

  • Straetmans, S.: Extreme financial returns and their comovements. Tinbergen Institute Research Series nr. 181, Thesis Publishers Amsterdam (1998)

  • Strassburger, D., Pfeifer, D.: Dependence matters. 36th International Astin Colloquium, ETH Zurich (2005)

  • Stărică, C.: Multivariate extremes for models with constant conditional correlations. J. Empir. Finance 6, 515–553 (1999)

    Article  Google Scholar 

  • Zhang, M.-H.: Modelling total tail dependence along diagonals. Insur. Math. Econ. 42, 73–80 (2008)

    Article  MATH  Google Scholar 

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Embrechts, P., Lambrigger, D.D. & Wüthrich, M.V. Multivariate extremes and the aggregation of dependent risks: examples and counter-examples. Extremes 12, 107–127 (2009). https://doi.org/10.1007/s10687-008-0071-5

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