Scenario Analysis in the Measurement of Operational Risk Capital: A Change of Measure Approach
28 Pages Posted: 7 Mar 2010 Last revised: 23 Oct 2012
Date Written: July 5, 2012
At large financial institutions, operational risk is gaining the same importance as market and credit risk in the capital calculation. Although scenario analysis is an important tool for financial risk measurement, its use in the measurement of operational risk capital has been arbitrary and often inaccurate. We propose a method that combines scenario analysis with historical loss data. Using the Change of Measure approach, we evaluate the impact of each scenario on the total estimate of operational risk capital. The method can be used in stress-testing, what-if assessment for scenario analysis, and Loss Given Default estimates used in credit evaluations.
Keywords: Scenario Analysis, Operational Risk Capital, Stress Testing, Change of Measure, Loss Data Modeling, Basel Capital Accord
JEL Classification: G10, G20, G21, D81
Suggested Citation: Suggested Citation