The paper argues that it would be natural to replace the standard normal distribution function by the logistic function in the regulatory Basel II (Vasicek's) formula. Such a model would be in fact consistent with the standard logistic regression PD modeling approach. An empirical study based on...

State-of-the-art credit risk portfolio models and the new Basel capital Accord consider only symmetric dependencies between borrowers in a portfolio, such as correlations. Recently, asymmetric dependencies have been introduced by Davis & Lo (2001), among others. However, statistical estimation...

The paper argues that it would be natural to replace the standard normal distribution function by the logistic function in the regulatory Basel II (Vasicek's) formula. Such a model would be in fact consistent with the standard logistic regression PD modeling approach. An empirical study based on...

Firm political contributions are associated with lower credit default swap spreads for contributing firms. To address endogeneity, we employ novel instruments and use a set of exogenous events on campaign contribution restrictions: (a) the passage of the Bipartisan Campaign Reform Act (BCRA)...

We use a panel data set of large listed European banks to evaluate the effect of the usage of internal ratings-based (IRB) models on bank opacity. We find that a more intensive implementation of these models is associated with lower absolute forecast error and disagreement among analysts about...

We by this paper try to do a comparative review of the various approaches in deducing a measure for time-varying z-score. We however employ several modules as part of our assessment in computing the elements of our z-score, we also look at the optimal time length and data frequency through which...