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L’indice boursier islamique est-il moins volatile que son homologue conventionnel ? Application du modèle à changement de régimes de Markov.

هل مؤشر الأسهم الإسلامية أقل تقلبًا من نظيره التقليدي ؟ تطبيق نموذج ماركوف لتغيير النظام.
Authors: Abdessamad OUCHEN;

L’indice boursier islamique est-il moins volatile que son homologue conventionnel ? Application du modèle à changement de régimes de Markov.

Abstract

Afin de comprendre les asymétries cycliques dans les séries des rendements des principaux indices boursiers, il est primordial de recourir aux spécifications non linéaires qui distinguent entre les phases d’expansion et celles de récession. Nous avons estimé ainsi un modèle à changement de régimes de Markov, à deux états et avec une spécification autorégressive d’ordre 2, de la série des rendements mensuels de l’indice islamique DJIM (Dow Jones Islamic Market) et de celle des rendements mensuels de son homologue conventionnel DJ (Dow Jones) durant la période qui s’étale du Janvier 2000 au Janvier 2017. Ce modèle a mis en évidence trois principaux résultats. Primo, l’existence de deux régimes distincts sur le marché boursier américain : l’état de crise et celui de stabilité, pour les deux indices, mais l’indice islamique est moins turbulent par rapport à son homologue conventionnel. Secundo, une période de volatilité élevée dure près de deux mois pour le cas de l’indice conventionnel et près d’un mois et une semaine pour le cas de l’indice islamique. Tertio, le modèle à changement de régimes de Markov a permis la détection de trois bulles : la bulle Internet (1998-2000), la bulle immobilière (1995-2006), pour les deux indices, et la bulle financière chinoise (2014-2015) uniquement pour l’indice conventionnel.

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Keywords

Economics and Econometrics, Indice boursier conventionnel, indice boursier islamique, modèle à changement de régimes de Markov, probabilité de lissage, FOS: Political science, Social Sciences, finance islamique, Market Structure, Economics, Econometrics and Finance, Indice boursier conventionnel, indice boursier islamique, modèle à changement de régimes de Markov, probabilité de lissage, indice, HG1-9999, Political science, Finance, Economic Impacts of Insurance Market Dynamics

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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