Under the current regulatory guidelines for banks and insurance companies, the quantification of diversification benefits due to risk aggregation plays a prominent role. In this paper we establish second-order approximation of risk concentration associated with a random vector X:=(X1,X2,…,Xd)...

Increasing attention is paid to risk management under the recent regulatory frameworks of the insurance and financial sectors. It is required by the regulator that institutions have a capital to face potential losses from their activity. This capital is usually assessed by means of risk...

Increasing attention is paid to risk management under the recent regulatory frameworks of the insurance and financial sectors. It is required by the regulator that institutions have a capital to face potential losses from their activity. This capital is usually assessed by means of risk...

Los recientes marcos regulatorios del sector financiero y asegurador otorgan una creciente importancia a la gestión de riesgos. El regulador exige a las entidades que dispongan de un capital reservado para hacer frente a posibles pérdidas derivadas de sus actividades; este capital se...

Abstract We consider three measures on the systemic importance of a financial institu- tion within a interconnected financial system. Based on the measures, we study the relation between the size of a financial institution and its systemic importance. From both theo- retical model and empirical...

When correlations between assets turn positive, multi-asset portfolios can become riskier than single assets. This article presents the estimation of tail risk at very high quantiles using a semiparametric estimator which is particularly suitable for portfolios with a large number of assets. The...

Accurate credit-granting decisions are crucial to the efficiency of the decentralized capital allocation mechanisms in modern market economies. Credit bureaus and many financial institutions have developed and used credit-scoring models to standardize and automate, to the extent possible, credit...

We model the dynamics of ask and bid curves in a limit order book market using a dynamic semiparametric factor model. The shape of the curves is captured by a factor structure which is estimated nonparametrically. Corresponding factor loadings are assumed to follow multivariate dynamics and are...

Financial advisors typically recommend that a long-term investor should hold a higher percentage of his wealth in stocks than a short-term investor. However, part of the academic literature disagrees with this advice. We use a spatial dominance test which is suited for comparing alternative...

An intensive and still growing body of research focuses on estimating a portfolio’s Value-at-Risk.Depending on both the degree of non-linearity of the instruments comprised in the portfolio and thewillingness to make restrictive assumptions on the underlying statistical distributions, a...