Journal
JOURNAL OF FINANCIAL ECONOMICS
Volume 79, Issue 3, Pages 569-614Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jfineco.2005.03.001
Keywords
market risk; credit risk; operational risk; risk diversification; copula
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Integrated risk management for financial institutions requires an approach for aggregating risk types (market, credit, and operational) whose distributional shapes vary considerably. We construct the joint risk distribution for a typical large, internationally active bank using the method of copulas. This technique allows us to incorporate realistic marginal distributions that capture essential empirical features of these risks such as skewness and fat-tails while allowing for a rich dependence structure. We explore the impact of business mix and inter-risk correlations on total risk. We then compare the copula-based method with several conventional approaches to computing risk. (c) 2005 Elsevier B.V. All rights reserved.
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