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Title:Do specialization benefits outweigh concentration risks in credit portfolios of German banks? PDF Logo
Authors:Böve, Rolf
Düllmann, Klaus
Pfingsten, Andreas
Issue Date:2010
Series/Report no.:Discussion Paper Series 2: Banking and Financial Studies 2010,10
Abstract:Lending specialization on certain industry sectors can have opposing effects on monitoring (including screening) abilities and on the sectoral concentration risk of a credit portfolio. In this paper, we examine in the first part if monitoring abilities of German cooperative banks and savings banks increase with their specialization on certain industry sectors. We observe that sectoral specialization generally entails better monitoring quality, particularly in the case of the cooperative banks. In the second part we measure the overall effect of better monitoring and the associated higher sectoral credit concentrations on the credit risk of the portfolio. Our empirical results suggest that specialization benefits overcompensate the impact of higher credit concentrations in the case of the cooperative banks. For savings banks, the results on the net effect depend on how specialization is measured. If specialization is gauged by Hirschman Herfindahl indices, the net effect is an increase of portfolio risk due to the higher sectoral concentration. If specialization is instead measured by distance measures, portfolio risk decreases as the impact of better monitoring abilities prevails.
Subjects:bank lending
loan portfolio
diversification
expected loss
savings banks
cooperative banks
concentration
economic capital
credit risk
JEL:G11
G21
ISBN:978-3-86558-657-5
Document Type:Working Paper
Appears in Collections:Discussion Paper Series 2: Banking and Financial Studies, Deutsche Bundesbank

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