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THE ESTIMATION RISK IN EXTREME SYSTEMIC RISK FORECASTS

Published online by Cambridge University Press:  22 August 2023

Yannick Hoga*
Affiliation:
University of Duisburg-Essen
*
Address correspondence to Yannick Hoga, Faculty of Economics and Business Administration, University of Duisburg-Essen, Essen, Germany; e-mail: yannick.hoga@vwl.uni-due.de
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Abstract

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Systemic risk measures have been shown to be predictive of financial crises and declines in real activity. Thus, forecasting them is of major importance in finance and economics. In this paper, we propose a new forecasting method for systemic risk as measured by the marginal expected shortfall (MES). It is based on first de-volatilizing the observations and, then, calculating systemic risk for the residuals using an estimator based on extreme value theory. We show the validity of the method by establishing the asymptotic normality of the MES forecasts. The good finite-sample coverage of the implied MES forecast intervals is confirmed in simulations. An empirical application to major U.S. banks illustrates the significant time variation in the precision of MES forecasts, and explores the implications of this fact from a regulatory perspective.

Type
ARTICLES
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2023. Published by Cambridge University Press

Footnotes

The author would like to thank the Co-Editor Eric Renault and the three anonymous referees for their insightful comments that significantly improved the quality of the paper. This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through project 460479886.

References

REFERENCES

Acharya, V.V., Pedersen, L.H., Philippon, T., & Richardson, M. (2017) Measuring systemic risk. Review of Financial Studies 30(1), 247.CrossRefGoogle Scholar
Adler, R.J. (1990) An Introduction to Continuity, Extrema, and Related Topics for General Gaussian Processes . Institute of Mathematical Statistics.CrossRefGoogle Scholar
Adrian, T. & Brunnermeier, M.K. (2016) CoVaR. American Economic Review 106(7), 17051741.CrossRefGoogle Scholar
Allen, L., Bali, T.G., & Tang, Y. (2012) Does systemic risk in the financial sector predict future economic downturns? Review of Financial Studies 25(10), 30003036.CrossRefGoogle Scholar
Bali, T.G. (2007) A generalized extreme value approach to financial risk management. Journal of Money, Credit and Banking 39(7), 16131649.CrossRefGoogle Scholar
Bao, Y., Lee, T.-H., & Saltoğlu, B. (2006) Evaluating predictive performance of value-at-risk models in emerging markets: A reality check. Journal of Forecasting 25, 101128.CrossRefGoogle Scholar
Basel Committee on Banking Supervision (2019) Basel Framework. Bank for International Settlements, Basel. http://www.bis.org/basel_framework/index.htm?export=pdf.Google Scholar
Beutner, E., Heinemann, A., & Smeekes, S. (2021) A justification of conditional confidence intervals. Electronic Journal of Statistics 15(1), 25172565.CrossRefGoogle Scholar
Billio, M., Getmansky, M., Lo, A.W., & Pelizzon, L. (2012) Econometric measures of connectedness and systemic risk in the finance and insurance sectors. Journal of Financial Economics 104(3), 535559.CrossRefGoogle Scholar
Bollerslev, T. (1987) A conditionally heteroskedastic time series model for speculative prices and rates of return. Review of Economics and Statistics 69, 542547.CrossRefGoogle Scholar
Bollerslev, T. (1990) Modelling the coherence in short-run nominal exchange rates: A multivariate generalized ARCH model. Review of Economics and Statistics 74(3), 498505.CrossRefGoogle Scholar
Breymann, W., Dias, A., & Embrechts, P. (2003) Dependence structures for multivariate high-frequency data in finance. Quantitative Finance 3, 114.CrossRefGoogle Scholar
Brownlees, C. & Engle, R.F. (2017) SRISK: A conditional capital shortfall measure of systemic risk. Review of Financial Studies 30(1), 4879.CrossRefGoogle Scholar
Cai, J.-J., Einmahl, J.H.J., de Haan, L., & Zhou, C. (2015) Estimation of the marginal expected shortfall: The mean when a related variable is extreme. Journal of the Royal Statistical Society: Series B (Statistical Methodology) 77(2), 417442.CrossRefGoogle Scholar
Cai, J.-J. & Musta, E. (2020) Estimation of the marginal expected shortfall under asymptotic independence. Scandinavian Journal of Statistics 47(1), 5683.CrossRefGoogle Scholar
Chan, N.H., Deng, S.-J., Peng, L., & Xia, Z. (2007) Interval estimation of value-at-risk based on GARCH models with heavy-tailed innovations. Journal of Econometrics 137, 556576.CrossRefGoogle Scholar
Chen, C., Iyengar, G., & Moallemi, C.C. (2013) An axiomatic approach to systemic risk. Management Science 59(6), 13731388.CrossRefGoogle Scholar
Christoffersen, P. & Gonçalves, S. (2005) Estimation risk in financial risk management. Journal of Risk 7, 128.CrossRefGoogle Scholar
Conrad, C. & Karanasos, M. (2010) Negative volatility spillovers in the unrestricted ECCC–GARCH model. Econometric Theory 26(3), 838862.CrossRefGoogle Scholar
de Haan, L. & Ferreira, A. (2006) Extreme Value Theory . Springer.CrossRefGoogle Scholar
Di Bernardino, E. & Prieur, C. (2018) Estimation of the multivariate conditional tail expectation for extreme risk levels: Illustration on environmental data sets. Environmetrics 29(7), 122.CrossRefGoogle Scholar
Drees, H. (2008) Some aspects of extreme value statistics under serial dependence. Extremes 11, 3553.CrossRefGoogle Scholar
Drees, H., Janßen, A., Resnick, S.I., & Wang, T. (2020) On a minimum distance procedure for threshold selection in tail analysis. SIAM Journal on Mathematics of Data Science 2(1), 75102.CrossRefGoogle Scholar
Einmahl, J.H.J., de Haan, L., & Li, D. (2006) Weighted approximations of tail copula processes with application to testing the bivariate extreme value condition. Annals of Statistics 34(4), 19872014.CrossRefGoogle Scholar
Engle, R.F. (2002) Dynamic conditional correlation: A simple class of multivariate generalized autoregressive conditional heteroskedasticity models. Journal of Business & Economic Statistics 20(3), 339350.CrossRefGoogle Scholar
Fougères, A.-L., De Haan, L., & Mercadier, C. (2015) Bias correction in multivariate extremes. The Annals of Statistics 43(2), 903934.CrossRefGoogle Scholar
Francq, C., Jiménez-Gamero, M.D., & Meintanis, S.G. (2017) Test for conditional ellipticity in multivariate GARCH models. Journal of Econometrics 196, 305319.CrossRefGoogle Scholar
Francq, C. & Zakoïan, J.-M. (2010) GARCH Models: Structure , Statistical Inference and Financial Applications. Wiley.CrossRefGoogle Scholar
Francq, C. & Zakoïan, J.-M. (2015) Risk-parameter estimation in volatility models. Journal of Econometrics 184, 158173.CrossRefGoogle Scholar
Francq, C. & Zakoïan, J.-M. (2016) Estimating multivariate GARCH models equation by equation. Journal of the Royal Statistical Society: Series B (Statistical Methodology) 78(3), 613635.CrossRefGoogle Scholar
FSB (2021) 2021 list of global systemically important banks (G-SIBs). Technical report. https://www.fsb.org/wp-content/uploads/P231121.pdf (accessed May 2022).Google Scholar
Gao, F. & Song, F. (2008) Estimation risk in GARCH VaR and ES estimates. Econometric Theory 24, 14041424.CrossRefGoogle Scholar
Giglio, S., Kelly, B., & Pruitt, S. (2016) Systemic risk and the macroeconomy: An empirical evaluation. Journal of Financial Economics 119(3), 457471.CrossRefGoogle Scholar
Girardi, G. & Tolga Ergün, A. (2013) Systemic risk measurement: Multivariate GARCH estimation of CoVaR. Journal of Banking & Finance 37(8), 31693180.CrossRefGoogle Scholar
Gupta, A. & Liang, B. (2005) Do hedge funds have enough capital? A value-at-risk approach. Journal of Financial Economics 77, 219253.CrossRefGoogle Scholar
Hafner, C.M., Herwartz, H., & Maxand, S. (2022) Identification of structural multivariate GARCH models. Journal of Econometrics 227, 212227.CrossRefGoogle Scholar
Hall, P. & Yao, Q. (2003) Inference in ARCH and GARCH models with heavy-tailed errors. Econometrica 71, 285317.CrossRefGoogle Scholar
He, C. & Teräsvirta, T. (2004) An extended constant conditional correlation GARCH model and its fourth-moment structure. Econometric Theory 20, 904926.CrossRefGoogle Scholar
Heffernan, J.E. (2000) A directory of coefficients of tail dependence. Extremes 3(3), 279290.CrossRefGoogle Scholar
Hill, B. (1975) A simple general approach to inference about the tail of a distribution. Annals of Statistics 3, 11631174.CrossRefGoogle Scholar
Hoga, Y. (2017) Change point tests for the tail index of $\beta$ -mixing random variables. Econometric Theory 33, 915954.CrossRefGoogle Scholar
Hoga, Y. (2018) Detecting tail risk differences in multivariate time series. Journal of Time Series Analysis 39, 665689.CrossRefGoogle Scholar
Hoga, Y. (2019) Confidence intervals for conditional tail risk measures in ARMA–GARCH models. Journal of Business & Economic Statistics 37, 613624.CrossRefGoogle Scholar
Hoga, Y. (2022) Limit theory for forecasts of extreme distortion risk measures and expectiles. Journal of Financial Econometrics 20, 1844.CrossRefGoogle Scholar
Hua, L. & Joe, H. (2011) Second order regular variation and conditional tail expectation of multiple risks. Insurance: Mathematics and Economics 49, 537546.Google Scholar
IMF/BIS/FSB (2009) Guidance to assess the systemic importance of financial institutions, markets and instruments: Initial considerations. Technical report, IMF. https://www.imf.org/external/np/g20/pdf/100109.pdf (accessed May 2022).Google Scholar
Jeantheau, T. (1998) Strong consistency of estimators for multivariate ARCH models. Econometric Theory 14, 7086.CrossRefGoogle Scholar
Kuester, K., Mittnik, S., & Paolella, M.S. (2006) Value-at-risk prediction: A comparison of alternative strategies. Journal of Financial Econometrics 4(1), 5389.CrossRefGoogle Scholar
Laurent, S., Rombouts, J.V.K., & Violante, F. (2012) On the forecasting accuracy of multivariate GARCH models. Journal of Applied Econometrics 27(6), 934955.CrossRefGoogle Scholar
Li, S., Peng, L., & Song, X. (2023) Simultaneous confidence bands for conditional value-at-risk and expected shortfall. Econometric Theory, 135. https://doi.org/10.1017/S0266466622000275.Google Scholar
Martins-Filho, C., Yao, F., & Torero, M. (2018) Nonparametric estimation of conditional value-at-risk and expected shortfall based on extreme value theory. Econometric Theory 34(1), 2367.CrossRefGoogle Scholar
McNeil, A.J. & Frey, R. (2000) Estimation of tail-related risk measures for heteroscedastic financial time series: An extreme value approach. Journal of Empirical Finance 7, 271300.CrossRefGoogle Scholar
Nakatani, T. & Teräsvirta, T. (2009) Testing for volatility interactions in the constant conditional correlation GARCH model. The Econometrics Journal 12, 147163.CrossRefGoogle Scholar
Qin, X. & Zhou, C. (2021) Systemic risk allocation using the asymptotic marginal expected shortfall. Journal of Banking & Finance 126, 116.CrossRefGoogle Scholar
Schmidt, R. & Stadtmüller, U. (2006) Nonparametric estimation of tail dependence. Scandinavian Journal of Statistics 33(2), 307335.CrossRefGoogle Scholar
Shao, Q.-M. (1993) Almost sure invariance principles for mixing sequences of random variables. Stochastic Processes and their Applications 48(2), 319334.CrossRefGoogle Scholar
Vervaat, W. (1972) Functional central limit theorems for processes with positive drift and their inverses. Zeitschrift für Wahrscheinlichkeitstheorie und Verwandte Gebiete 23, 245253.CrossRefGoogle Scholar
Weissman, I. (1978) Estimation of parameters and large quantiles based on the $k$ largest observations. Journal of the American Statistical Association 73, 812815.Google Scholar