The application of credit risk models in Comprehensive Capital Analysis and Review and European Banking Authority mandated regulatory macroeconomic stress testing is of significant concern for banks. The credit models that are used to project stressed losses and impairments under macroeconomic...

In this paper we describe methods of decomposing risk into subcomponents such as contributing instruments, subportfolios or underlying risk factors e.g., equity, foreign exchange, economy-wide systematic and interest rate risk factors. The Euler allocation principle for allocation of instrument...

Portfolio risk measures such as Value at Risk is traditionally measured using a buy and hold assumption on the portfolio. In particular the 10-day market risk capital is commonly measured as the 1-day Value at Risk scaled by the square root of 10. While this scaling is convenient to obtain n-day...

Risk aggregation is the roll-up of low-level risks or sub-risks to higher levels. Risk management for banks or insurance institutions involves risk measurement and risk control at the individual risk level, including market risk, credit risk, and operational risks and also the aggregated risk of...

Lately liquidity risk has received attention from regulators and banks - having witnessed how a credit crisis evolved into a major liquidity funding problem for many banks. Following the crisis regulators has put forward a new regulation, headed under Basel III, for liquidity risk focusing on...

With the focus on multi-horizon macroeconomic credit loss projection models in stress testing and impairments it is of interest to understand how different model assumptions can impact the projection under stressed and best estimate economic projections. In this paper we focus on the popular...

The capturing of tail events, especially those that incur severe loss at rare chance, is one of the important objectives for modern risk analysis. However past behavior in financial data is not necessarily a correct reflection of the possible scenarios in the future. The economic turmoils in the...