This thesis is devoted to the modelling and measurement of multivariate operational risk, multivariate business risk, and the aggregation of different risk types. A bank's total operational risk is modelled by a multivariate compound Poisson process for which the dependence structure is described by the new concept of a Lévy copula. In doing so, we obtain closed-form approximations for the operational Value-at-Risk. The quantification of business risk is based on discounted future cash flows, which are modelled by different Gauss processes. This gives insight into the so-called Capital-at-Risk of a financial institution. Finally, we compare different risk-aggregation techniques and present a new approach how expert knowledge can be included when calculating the correlation between different risk types.
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This thesis is devoted to the modelling and measurement of multivariate operational risk, multivariate business risk, and the aggregation of different risk types. A bank's total operational risk is modelled by a multivariate compound Poisson process for which the dependence structure is described by the new concept of a Lévy copula. In doing so, we obtain closed-form approximations for the operational Value-at-Risk. The quantification of business risk is based on discounted future cash flows, wh...
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