Quantifying extreme risks in stock markets: A case of former Yugoslavian states

One of the reasons why investors were not prepared for heavy losses in the stock markets that occurred after the beginning of sub prime mortgage crisis in the US lies in the curious fact that many practitioners were led to believe that there are so many independent agents participating in the stock...

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Main Author: Saša Žiković
Format: Article
Language:deu
Published: Faculty of Economics University of Rijeka 2008-06-01
Series:Zbornik radova Ekonomskog fakulteta u Rijeci : časopis za ekonomsku teoriju i praksu
Subjects:
Online Access:http://www.efri.hr/sites/efri.hr/files/cr-collections/2/zikovic.pdf
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author Saša Žiković
author_facet Saša Žiković
author_sort Saša Žiković
collection DOAJ
description One of the reasons why investors were not prepared for heavy losses in the stock markets that occurred after the beginning of sub prime mortgage crisis in the US lies in the curious fact that many practitioners were led to believe that there are so many independent agents participating in the stock markets that surely they must act according to Central limit theorem i.e. according to Gaussian distribution. As it turns out the paradigm of normality has let us down once again and reputation of VaR based risk measurement is seriously damaged. An alternative measure that looks very strong at these dire times and quantifi es the losses that might be encountered in the tail is the conditional VaR (CVaR). While VaR represents a loss one expects at a determined confi dence level for a given holding period, CVaR is the loss one expects, provided that the loss is equal to or greater than VaR. In this paper the testing of CVaR models is performed on stock indexes from Slovenia, Croatia, Bosnia and Herzegovina, Serbia, Montenegro and Macedonia. Error statistics show that CVaR models are quite successful at capturing extreme losses that occurred in these markets, especially models based on Generalized extreme value distribution and a proposed Hybrid historical simulation CVaR model.
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spelling doaj.art-f90163b1ac1e4126b3f8c4a54a59f79d2022-12-21T21:09:28ZdeuFaculty of Economics University of RijekaZbornik radova Ekonomskog fakulteta u Rijeci : časopis za ekonomsku teoriju i praksu1331-80042008-06-012614168Quantifying extreme risks in stock markets: A case of former Yugoslavian statesSaša ŽikovićOne of the reasons why investors were not prepared for heavy losses in the stock markets that occurred after the beginning of sub prime mortgage crisis in the US lies in the curious fact that many practitioners were led to believe that there are so many independent agents participating in the stock markets that surely they must act according to Central limit theorem i.e. according to Gaussian distribution. As it turns out the paradigm of normality has let us down once again and reputation of VaR based risk measurement is seriously damaged. An alternative measure that looks very strong at these dire times and quantifi es the losses that might be encountered in the tail is the conditional VaR (CVaR). While VaR represents a loss one expects at a determined confi dence level for a given holding period, CVaR is the loss one expects, provided that the loss is equal to or greater than VaR. In this paper the testing of CVaR models is performed on stock indexes from Slovenia, Croatia, Bosnia and Herzegovina, Serbia, Montenegro and Macedonia. Error statistics show that CVaR models are quite successful at capturing extreme losses that occurred in these markets, especially models based on Generalized extreme value distribution and a proposed Hybrid historical simulation CVaR model.www.efri.hr/sites/efri.hr/files/cr-collections/2/zikovic.pdfExtreme lossesConditional VaRExtreme value theoryHybrid historical simulation
spellingShingle Saša Žiković
Quantifying extreme risks in stock markets: A case of former Yugoslavian states
Zbornik radova Ekonomskog fakulteta u Rijeci : časopis za ekonomsku teoriju i praksu
Extreme losses
Conditional VaR
Extreme value theory
Hybrid historical simulation
title Quantifying extreme risks in stock markets: A case of former Yugoslavian states
title_full Quantifying extreme risks in stock markets: A case of former Yugoslavian states
title_fullStr Quantifying extreme risks in stock markets: A case of former Yugoslavian states
title_full_unstemmed Quantifying extreme risks in stock markets: A case of former Yugoslavian states
title_short Quantifying extreme risks in stock markets: A case of former Yugoslavian states
title_sort quantifying extreme risks in stock markets a case of former yugoslavian states
topic Extreme losses
Conditional VaR
Extreme value theory
Hybrid historical simulation
url http://www.efri.hr/sites/efri.hr/files/cr-collections/2/zikovic.pdf
work_keys_str_mv AT sasazikovic quantifyingextremerisksinstockmarketsacaseofformeryugoslavianstates