Advanced Search
MyIDEAS: Login

Contagion des opinions et fonctionnement des marchés financiers

Contents:

Author Info

  • André Orléan

Abstract

[eng] Contagion of opinions in financial markets . . Many practitioners have underlined the role played by contagion processes in the generation not only of speculative bubbles but also of excess volatility. The following text shows the truth of such a point of view. Our idea is that, at the origin of interpersonal influences, we find the rational use of the information conveyed by prices. When the investors' confidence in the prevailing methods of fundamental evaluation is too low, the process of interaction becomes non-ergodic and gives rise to speculative bubbles. The model we use to demonstrate this result is very close to the Ising model. [fre] Contagion des opinions et fonctionnement des marchés financiers. . De nombreux praticiens de la finance ont souligné le rôle joué par les phénomènes de contagion, non seulement dans la formation des bulles, mais également dans l'existence d'une volatilité excessive des cours. Le présent texte démontre la pertinence de ce point de vue. Dans un premier temps, on souligne que l'utilisation rationnelle du prix, par l'ensemble des opérateurs, comme source complémentaire d'informations, est à la base même des phénomènes de contagion. Dans un second temps, on étudie cette dynamique d'interactions. On démontre que si les opérateurs ont une trop faible confiance dans les méthodes d'évaluation fondamentale, le processus d'interaction est non ergodique et donne naissance à des bulles spéculatives.

Download Info

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
File URL: http://www.persee.fr/web/revues/home/prescript/article/reco_0035-2764_1992_num_43_4_409384
Download Restriction: Data and metadata provided by Persée are licensed under a Creative Commons "Attribution-Noncommercial-Share Alike 3.0" License http://creativecommons.org/licenses/by-nc-sa/3.0/

File URL: http://www.persee.fr/articleAsPDF/reco_0035-2764_1992_num_43_4_409384/reco_0035-2764_1992_num_43_4_409384.pdf?mode=light
Download Restriction: Data and metadata provided by Persée are licensed under a Creative Commons "Attribution-Noncommercial-Share Alike 3.0" License http://creativecommons.org/licenses/by-nc-sa/3.0/

As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.

Bibliographic Info

Article provided by Programme National Persée in its journal Revue économique.

Volume (Year): 43 (1992)
Issue (Month): 4 ()
Pages: 685-698

as in new window
Handle: RePEc:prs:reveco:reco_0035-2764_1992_num_43_4_409384

Note: DOI:10.2307/3501837
Contact details of provider:
Web page: http://www.persee.fr/web/revues/home/prescript/revue/reco

Related research

Keywords:

Other versions of this item:

References

No references listed on IDEAS
You can help add them by filling out this form.

Citations

Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
as in new window

Cited by:
  1. Bronka Rzepkowski, 2001. "Heterogeneous Expectations, Currency Options and the Euro / Dollar Exchange Rate," Working Papers 2001-03, CEPII research center.
  2. Bertrand BLANCHETON (GREThA UMR CNRS 5113) & Yves JEGOUREL (LAREFI), 2009. "Sovereign wealth funds: toward a new state capitalism? (In French)," Cahiers du GREThA 2009-04, Groupe de Recherche en Economie Théorique et Appliquée.

Lists

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

Statistics

Access and download statistics

Corrections

When requesting a correction, please mention this item's handle: RePEc:prs:reveco:reco_0035-2764_1992_num_43_4_409384. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Equipe PERSEE).

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.