Value at risk models in finance

Robert Engle and Simone Manganelli

No 75, Working Paper Series from European Central Bank

Abstract: The main objective of this paper is to survey and evaluate the performance of the most popular univariate VaR methodologies, paying particular attention to their underlying assumptions and to their logical flaws. In the process, we show that the Historical Simulation method and its variants can be considered as special cases of the CAViaR framework developed by Engle and Manganelli (1999). We also provide two original methodological contributions. The first one introduces the extreme value theory into the CAViaR model. The second one concerns the estimation of the expected shortfall (the expected loss, given that the return exceeded the VaR) using a regression technique. The performance of the models surveyed in the paper is evaluated using a Monte Carlo simulation. We generate data using GARCH processes with different distributions and compare the estimated quantiles to the true ones. The results show that CAViaR models perform best with heavy-tailed DGP. JEL Classification: C22, G22

Keywords: CAViaR; Extreme value theory; Value at Risk (search for similar items in EconPapers)
Date: 2001-08
Note: 196912
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (102)

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Persistent link: https://EconPapers.repec.org/RePEc:ecb:ecbwps:200175

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