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Gini-type measures of risk and variability: Gini shortfall, capital allocations, and heavy-tailed risks

Journal of Banking & Finance 2017 83, 70-84 open access
We introduce and explore Gini-type measures of risk and variability, and develop the corresponding economic capital allocation rules. The new measures are coherent, additive for co-monotonic risks, convenient computationally, and require only finiteness of the mean. To elucidate our theoretical considerations, we derive closed-form expressions for several parametric families of distributions that are of interest in insurance and finance, and further apply our findings to a risk portfolio of a bancassurance company.