The structure of credit risk: spread volatility and ratings transitions

Rudiger Kiesel, William Perraudin and Alex Taylor

Bank of England working papers from Bank of England

Abstract: Knowing the relative riskiness of different types of credit exposure is important for policy-makers designing regulatory capital requirements and for firms allocating economic capital. This paper analyses the risk structure of credit exposures with different maturities and credit qualities. It focuses particularly on risks associated with (i) ratings transitions and (ii) spread changes for given ratings. The analysis shows that, for high-quality debt, most risk stems from spread changes. This is significant because several recently proposed credit risk models assume no spread risk.

Date: 2001-05
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Persistent link: https://EconPapers.repec.org/RePEc:boe:boeewp:131

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