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GFC-Robust Risk Management Under the Basel Accord Using Extreme Value Methodologies

Santos, Paulo Araújo and Jiménez Martín, Juan Ángel and McAleer, Michael and Pérez Amaral, Teodosio (2011) GFC-Robust Risk Management Under the Basel Accord Using Extreme Value Methodologies. [ Documentos de Trabajo del Instituto Complutense de Análisis Económico; nº 27, 2011, ] (Unpublished)

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Abstract

In McAleer et al. (2010b), a robust risk management strategy to the Global Financial
Crisis (GFC) was proposed under the Basel II Accord by selecting a Value-at-Risk
(VaR) forecast that combines the forecasts of different VaR models. The robust forecast
was based on the median of the point VaR forecasts of a set of conditional volatility
models. In this paper we provide further evidence on the suitability of the median as a
GFC-robust strategy by using an additional set of new extreme value forecasting models
and by extending the sample period for comparison. These extreme value models
include DPOT and Conditional EVT. Such models might be expected to be useful in
explaining financial data, especially in the presence of extreme shocks that arise during
a GFC. Our empirical results confirm that the median remains GFC-robust even in the
presence of these new extreme value models. This is illustrated by using the S&P500
index before, during and after the 2008-09 GFC. We investigate the performance of a
variety of single and combined VaR forecasts in terms of daily capital requirements and
violation penalties under the Basel II Accord, as well as other criteria, including several
tests for independence of the violations. The strategy based on the median, or more
generally, on combined forecasts of single models, is straightforward to incorporate into
existing computer software packages that are used by banks and other financial
institutions.


Item Type:Working Paper or Technical Report
Additional Information:

JEL Classifications: G32, G11, G17, C53, C22.

Uncontrolled Keywords:Value-at-Risk (VaR), DPOT, daily capital charges, Robust forecasts, Violation penalties, Optimizing strategy, Aggressive risk management, Conservative risk management, Basel, Global financial crisis.
Subjects:Social sciences > Economics > Finance
Social sciences > Economics > Econometrics
Series Name:Documentos de Trabajo del Instituto Complutense de Análisis Económico
Volume:2011
Number:27
ID Code:12968
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Deposited On:19 Jul 2011 10:49
Last Modified:15 Nov 2013 10:49

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