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How to Improve the Quality of Stress Tests through Backtesting

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  • Adam Gersl

    ()
    (Joint Vienna Institute; Institute of Economic Studies, Faculty of Social Sciences, Charles University in Prague)

  • Jakub Seidler

    ()
    (Czech National Bank; Institute of Economic Studies, Faculty of Social Sciences, Charles University in Prague)

Abstract

This paper describes the stress-testing framework used in the Czech central bank and focuses on the general question of how to calibrate the models and parameters used to stress test the most important risks in the banking system. The paper argues that stress tests should be calibrated conservatively to overestimate the risks so that sufficient buffers are in place for when adverse shocks materialize. However, to ensure that the stress test framework is conservative enough over time, backtesting, i.e., comparison of the actual values of key financial variables with the predictions generated by the stress-testing models, should be a standard part of the stress-testing framework.

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Bibliographic Info

Article provided by Charles University Prague, Faculty of Social Sciences in its journal Finance a uver - Czech Journal of Economics and Finance.

Volume (Year): 62 (2012)
Issue (Month): 4 (August)
Pages: 325-346

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Handle: RePEc:fau:fauart:v:62:y:2012:i:4:p:325-346

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Keywords: E44; E47; G21;

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References

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  1. David Aikman & Piergiorgio Alessandri & Bruno Eklund & Prasanna Gai & Sujit Kapadia, & Elizabeth Martin, & Nada Mora & Gabriel Sterne & Matthew Willison, 2011. "Funding Liquidity Risk in a Quantitative Model of Systemic Stability," Central Banking, Analysis, and Economic Policies Book Series, in: Rodrigo Alfaro (ed.), Financial Stability, Monetary Policy, and Central Banking, edition 1, volume 15, chapter 12, pages 371-410 Central Bank of Chile.
  2. Petr Jakubík & Jaroslav Heřmánek, 2008. "Stress testing of the czech banking sector," Prague Economic Papers, University of Economics, Prague, vol. 2008(3), pages 195-212.
  3. Thomas Breuer & Martin Jandacka & Klaus Rheinberger & Martin Summer, 2009. "How to Find Plausible, Severe and Useful Stress Scenarios," International Journal of Central Banking, International Journal of Central Banking, vol. 5(3), pages 205-224, September.
  4. Petr Jakubik & Christian Schmieder, 2008. "Stress Testing Credit Risk: Is the Czech Republic Different from Germany?," Working Papers 2008/9, Czech National Bank, Research Department.
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Citations

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Cited by:
  1. Robert Ambrisko & Vitezslav Augusta & Jan Babecky & Michal Franta & Dana Hajkova & Petr Kral & Jan Libich & Pavla Netusilova & Milan Rikovsky & Jakub Rysanek & Pavel Soukup & Petr Stehlik & Vilem Vale, 2013. "Macroeconomic Effects of Fiscal Policy," Occasional Publications - Edited Volumes, Czech National Bank, Research Department, edition 2, volume 11, number rb11/2 edited by Jan Babecky & Kamil Galuscak, August.
  2. Konstantin Belyaev & Aelita Belyaeva & Tomas Konecny & Jakub Seidler & Martin Vojtek, 2012. "Macroeconomic Factors as Drivers of LGD Prediction: Empirical Evidence from the Czech Republic," Working Papers 2012/12, Czech National Bank, Research Department.
  3. Adam Gersl & Petr Jakubik & Tomas Konecny & Jakub Seidler, 2012. "Dynamic Stress Testing: The Framework for Testing Banking Sector Resilience Used by the Czech National Bank," Working Papers 2012/11, Czech National Bank, Research Department.
  4. Adam Gersl & Petr Jakubik & Tomas Konecny & Jakub Seidler, 2013. "Dynamic Stress Testing: The Framework for Assessing the Resilience of the Banking Sector Used by the Czech National Bank," Czech Journal of Economics and Finance (Finance a uver), Charles University Prague, Faculty of Social Sciences, vol. 63(6), pages 505-536, December.
  5. Vaclav Hausenblas & Ivana Kubicova & Jitka Lesanovska, 2012. "Contagion Risk in the Czech Financial System: A Network Analysis and Simulation Approach," Working Papers 2012/14, Czech National Bank, Research Department.
  6. Jaromir Baxa & Michal Franta & Tomas Havranek & Roman Horvath & Miroslav Plasil & Marek Rusnak & Borek Vasicek, 2013. "Transmission of Monetary Policy," Occasional Publications - Edited Volumes, Czech National Bank, Research Department, edition 1, volume 11, number rb11/1 edited by Jan Babecky & Roman Horvath, August.
  7. Jose Peydro Alcalde & Sona Benecka & Alexis Derviz & Adam Gersl & Tomas Holub & Roman Horvath & Petr Jakubik & Narcisa Liliana Kadlcakova & Dorota Kowalczyk & Ivana Kubicova & Steven Ongena & Jakub Ry, 2012. "Financial Stability and Monetary Policy," Occasional Publications - Edited Volumes, Czech National Bank, Research Department, edition 2, volume 10, number rb10/2 edited by Jan Babecky & Roman Horvath, August.

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