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Credit risk

The score for credit

Jorge Sobehart and Sean Keenan discuss the benefits and limitations of model performance measures for default and credit spread prediction, and highlight several common pitfalls in the model comparison found in the literature and vendor documentation. To…

Multi-factor adjustment

The author presents an analytical method for calculating portfolio value-at-risk and expected shortfall in the multi-factor Merton framework. This method is essentially an extension of the granularity adjustment technique to a new dimension.

A complex framework

Many Japanese financial institutions now conduct their derivatives business through their securities firms, but there are a number of legal risks in using a securities dealer as a derivatives trading entity, writes Tan Ser Kiat of Denton Wilde Sapte…

Notching: Poles apart

A long-running dispute between the 'big three' credit rating agencies concerning the practice of notching refuses to go away. Saskia Scholtes examines the latest contribution to the debate from economics consultancy Nera.

Bringing credit portfolio modelling to maturity

Michael Barco shows how to perform mark-to-market credit portfolio modelling by extendingthe well-known saddle-point technique, introducing spread and recovery rate volatility. Hethen tests his results on a fictitious portfolio, showing how asset…

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