Using extreme value theory to estimate the likelihood of banking sector failure

Author: Byström, Hans¹

Source: The European Journal of Finance, Volume 12, Number 4, June 2006 , pp. 303-312(10)

Publisher: Routledge, part of the Taylor & Francis Group

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Abstract:

The growing interest in management of credit risk and estimation of default probabilities has given rise to a range of more or less elaborate credit risk models. While these models work well for non-financial firms they are usually not very successful in capturing the financial strength of banks. As an answer to this, Hall and Miles suggest a simple approach of estimating bank failure probabilities based solely on their stock prices. This paper suggests an extension to the Hall and Miles model using extreme value theory and applies the extended model to the Swedish banking sector around the banking crisis of the early 1990s. The extended model captures very well the increased likelihood of a systemic banking sector failure around the peak of the crisis and it produces default probabilities that are more stable, more realistic and more consistent with Moody's and Fitch rating implied default rates than probabilities from the original Hall and Miles model.

Keywords: Banking sector failure; default risk; extreme value theory

Document Type: Research article

DOI: 10.1080/13518470500146116

Affiliations: 1: Department of Economics, Lund University, Lund, Sweden

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