The Stability of Efficiency Rankings when Risk-Preference are Different

M. Koetter

Research output: Working paperAcademic

Abstract

In this paper we analyse bank efficiency in Germany for four cross-sections of data
during the period 1995-2001. Under the assumption of cost minimisation we obtain
firm-specific efficiency estimates using stochastic frontier analysis. To explicitly allow
for different risk preferences when measuring efficiency we then develop a model
based on utility maximisation. Using the almost ideal demand system, input- and
profit demand functions are estimated and risk-preferences recovered. Efficiency is
then measured in the risk-return space. Efficiency scores improve substantially and
the dispersion of performance across sectors and size classes vanishes. Rank-order
correlation between the two measures is low or insignificant. This suggests that
best-practice institutes should not be identified only on the basis of cost efficiency.
However, in terms of magnitude risk-return efficiency seems to be of less
importance than cost efficiency.
Original languageEnglish
Place of PublicationUtrecht
PublisherUU USE Tjalling C. Koopmans Research Institute
Number of pages58
Publication statusPublished - 2004

Publication series

NameDiscussion Paper Series / Tjalling C. Koopmans Research Institute
No.08
Volume04
ISSN (Electronic)2666-8238

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