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Arbitrages et endettement de la firme : une généralisation

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  • Serge Dormard

Abstract

[fre] Dans cette étude on déduit une mesure du risque des fameuses propositions de Modigliani et Miller, propositions qui prouvent qu'à l'équilibre les valeurs de marché des firmes appartenant à la même classe de risque sont égales quel que soit l'endettement de chacune d'elles. Cette mesure du risque permet de reconsidérer les possibilités d'arbitrage définies par Modigliani et Miller dans leurs divers articles et de les généraliser d'abord au cas où il n'y a aucune firme non endettée dans la classe de risque considérée. Puis on montre qu'il existe une infinité arbitrages à la disposition des investisseurs, ceux présentés par Modigliani et Miller n'étant que des cas très particuliers. [eng] Arbitrages and the firm's leverage : a generalization. . In this study, we infer a risk measure from the famous Modigliani and Miller's propositions, which prove that the market values of firms in the same risk class are the same in equilibrium whatever their leverage may be. This risk measure allows to reconsider the arbitrage opportunities defined by Modigliani and Miller in their various papers and to generalize them to begin with the case in which no firm without leverage exist in the considered class risk. Then we show it exists an infinity of arbitrages at investor's disposal, those presented by Modigliani and Miller being only very particular cases.

Suggested Citation

  • Serge Dormard, 1975. "Arbitrages et endettement de la firme : une généralisation," Revue Économique, Programme National Persée, vol. 26(4), pages 529-552.
  • Handle: RePEc:prs:reveco:reco_0035-2764_1975_num_26_4_408218
    DOI: 10.3406/reco.1975.408218
    Note: DOI:10.3406/reco.1975.408218
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