In Germany, the Regulation on the Liquidity of Institutions (formerly Principle II) requiresbanks to have a liquidity ratio which is at least equal to one. This ratio is calculated by dividingregulatorily specified liquid assets that are available within one month by short-term...

This paper presents a new approach to incorporate estimation risk into mean-variance portfolio selection. The key contribution of our analysis is that we model the estimation risk as a second, independent source of risk.

From a banking supervisory perspective, this paper analyses aspects of market risk of anaggregated trading portfolio comprised of the trading books of 11 German banks with aregulatory approved internal market risk model. Based on real, clean prot and loss dataand Value-at-Risk estimates of the...

The minimisation of the return variance is one of the classical topics of portfolio theory. One of the main difficulties of variance minimisation is the neccessary input factors- variances and covariances- of the assets of the investment universe- are unknown. Often these variances and...

Interest income is the most important source of revenue for most of thebanks. The aim of this paper is to assess the impact of different interest ratescenarios on the banks' interest income. As we do not know the interest ratesensitivity of real banks, we construct for each bank a portfolio with...

This paper describes the rst thorough analysis of the interest risk of German banks on anindividual bank level. We develop a new method that is based on time series of accountingbaseddata to quantify the interest risk of banks and apply it to analyze the German bankingsystem. We find evidence...

Expected returns can hardly be estimated from time series data. Therefore, many recent papers suggest investing in the global minimum variance portfolio. The weights of this portfolio are usually estimated by replacing the true return covariance matrix by its time series estimator. However,...

This paper describes the frst thorough analysis of the interest risk of German bankson an individual bank level. We develop a new method that is based on time series ofaccounting-based data to quantify the interest risk of banks and apply it to analyze theGerman banking system. We find evidence...