Model calibration

UBS: QIS3 results in increased capital, is not "fair"

UBS, the Switzerland-based financial institution, says its overall capital will increase under the Basel Accord revisions, as currently outlined in the third quantitative impact study (QIS3). In addition, other institutions have had the same results, the…

Capturing the smile

Since the discovery that traditional calibration methods fail to capture the dynamics of the smile, new approaches based on mixtures or ensembles of models have been developed. Simon Johnson and Han Lee present a variant of this approach that can be used…

Why Basel must brush-up on credit

Paul Kupiec of the International Monetary Fund argues that unresolved calibration problems remain with the new Basel Accord’s credit risk capital requirements – problems that may lead banks to make damaging risk decisions.

Regulatory capital volatility

When the consultation period ends, what calibration of risk weights will Basel finally decide on? Here, Esa Jokivuolle and Samu Peura demonstrate that the ratings sensitivity of risk weights may require Basel to think more carefully about the…

Implications of Basel for credit risk

Credit risk comes under the spotlight in Pillar one of the new Accord, forcing institutions to consider the benefits – and costs – of meeting the regulatory requirements. Jared Chebib, head of credit risk consulting at Andersen’s London office reports.

A beginning, not an end...

There's a host of operational risk issues still to be ironed out by the global banking industry and its supervisors. Bank regulator Jeremy Quick considers the key questions.

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