Embrechts, Paul; Neslehová, Johanna; Wüthrich, Mario V. - In: Insurance: Mathematics and Economics 44 (2009) 2, pp. 164-169
Mainly due to new capital adequacy standards for banking and insurance, an increased interest exists in the aggregation properties of risk measures like Value-at-Risk (VaR). We show how VaR can change from sub to superadditivity depending on the properties of the underlying model. Mainly, the...