Oldrich Vasicek
Lifetime achievement award: Stephen Kealhofer
Risk Awards 2023: KMV co-founder helped usher in a new era of credit risk analysis – at banks and investors
The simple link from default to LGD
The simple link from default to LGD
Name concentration correction
Credit Risk
Name concentration correction
Name concentration correction
Shortfall factor contributions
Shortfall factor contributions
Validating interest rate models under Solvency II
With Solvency II fast approaching, obtaining approval for your internal model is increasingly important. A key part of this process will be to demonstrate the ability of the model’s scenario generation to describe the evolution of interest rates…
Loan portfolio value
Using a conditional independence framework, Oldrich Vasicek derives a useful limiting form for the portfolio loss distribution with a single systematic factor. He then derives a risk-neutral distribution suitable for traded portfolios, and shows how…
A credit loss control variable
Viktor Tchistiakov, Jeroen de Smet and Peter-Paul Hoogbruin explain and demonstrate how the efficiency of Monte Carlo simulation in valuing a portfolio of credit risky exposures is improved by the use of the Vasicek distribution as a control variable. An…
Loan portfolio value
Using a conditional independence framework, Oldrich Vasicek derives a useful limiting form for the portfolio loss distribution with a single systematic factor. He then derives a risk-neutral distribution suitable for traded portfolios, and shows how…
Loan portfolio value
Using a conditional independence framework, Oldrich Vasicek derives a useful limiting form for the portfolio loss distribution with a single systematic factor. He then derives a risk-neutral distribution suitable for traded portfolios, and shows how…
Credit risk in asset securitisations: an analytical model
How much capital should banks reserve against investments in portfolio securitisations? Asserting that recent proposals on this subject by Basel are inconsistent, Michael Pykhtin and Ashish Dev propose a new analytical model suitable for tranches of…
Probing granularity
The granularity adjustment, which adjusts risk weightings for credit portfolio diversification, is one of Basel II’s key modelling assumptions. Here, Tom Wilde uncovers a weakness in this assumption arising from the differences in the underlying credit…
IRB approach explained
At the end of this month, the consultation period for the new Basel Accord on bank capital will end. We have prepared a technical section this month devoted to various issues surrounding Basel II. In the first paper, Tom Wilde sheds light on the…