A parsimonious extension of a well-known portfolio credit-risk model allows us to study a salient stylized fact - abrupt switches between high- and low-loss phases - from a risk-management perspective. As uncertainty about phase switches increases, expected losses decouple from unexpected...

Using a unique and comprehensive data set on the two largest economies of the Eurozone - France and Germany - this paper first proceeds to a computation of the Gordy formula relaxing the ad hoc sizedependent constraints of the Basel formulas. Our study contributes to Article 501 of the Capital...

Our paper addresses firm size as a driver of systematic credit risk in loans to small and medium enterprises (SMEs). Key contributions are the use of a unique data set of SME lending by over 400 German banks and relating systematic risk to the size dependence of regulatory capital requirements....