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La persistance des chocs de volatilité sur le marché des changes s'est-elle modifée depuis le debut des annees 1980 ?

Author

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  • Michel Beine
  • Sébastien Laurent

Abstract

[fre] Cet article vise à déterminer si la persistance des chocs de volatilité affectant les taux de change les plus importants contre le dollar (DM et yen) s'est modifiée depuis le début des années 1980. Pour ce faire, nous avons recourt au modèle Garch fractionnellement intégré (Figarch) qui, contrairement aux modèles usuels à hétéroscédasticité conditionnelle (Garch et Igarch), fournit une mesure directe de cette persistance. Appliquées aux taux de change journaliers, nos estimations suggèrent que, depuis les accords du Louvre en février 1987, la persistance de long terme des chocs de volatilité sur le marché DEM-USD a eu tendance à diminuer. Par contre, cette tendance n'est pas observée pour le yen. Des résultats auxiliaires pour le FRF et la GBP suggèrent que la réduction de la persistance pourrait être liée au SME. [eng] Assessing the evolution of volatility shocks persistence on the foreign exchange market from the beginning of the 80's. . This paper aims at determining whether the persistence of volatility shocks on the major foreign exchange markets (DEM and YEN) has changed since the beginning of the 80's. To this aim, we rely on the Fractionally Integrated Garch model (Figarch) that, unlike the usual frameworks with conditional heteroskedasticity (Garch and Igarch), provides a direct measure of such a persistence. Our findings show that since the Louvre Agreement in February 1987, the long run persistence of volatility shocks on the DEM-USD market has decreased but that such a phenomenon does not hold for the YEN. Further results relative to the FRF and the GBP emphasize the EMS as a potential source of the decrease in the long run persistence.

Suggested Citation

  • Michel Beine & Sébastien Laurent, 2000. "La persistance des chocs de volatilité sur le marché des changes s'est-elle modifée depuis le debut des annees 1980 ?," Revue Économique, Programme National Persée, vol. 51(3), pages 703-711.
  • Handle: RePEc:prs:reveco:reco_0035-2764_2000_num_51_3_410548
    DOI: 10.3406/reco.2000.410548
    Note: DOI:10.3406/reco.2000.410548
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    Cited by:

    1. Michel Beine & Sébastien Laurent, 2000. "Structural change and long memory in volatility: new evidence from daily exchange rates," ULB Institutional Repository 2013/10473, ULB -- Universite Libre de Bruxelles.

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