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L’évaluation du prix des actions par les fondamentaux : analyse du marché français

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  • Dominique Pépin

Abstract

[eng] We build a discounted profit model to test whether changes in market fundamentals explain movements in stock prices. Empirical results on a French stock-price index show that profits explain a significant share of the index fluctuations, but less than half of the variation in stock prices is due to changes in aggregated profits. The implication is that financial cycles are mainly due to non-fundamental causes. The author’s study, conducted over a long period, also shows that theoretical stock prices are hard to estimate accurately. The fundamental value of equities is difficult to estimate even when profits are simply equal to their long-term value. [fre] Cet article propose un modèle d’actualisation des profits pour tester si les mouvements du prix des actions peuvent être expliqués par les variations de la composante fondamentale. L’application empirique sur un indice du marché français des actions montre que les profits expliquent de façon significative les fluctuations de l’indice. Cependant, moins de la moitié seulement des variations des prix d’actifs sont expliquées par celles du profit agrégé, indiquant que la majeure partie des cycles financiers est d’origine non fondamentale. Il est aussi montré que, sur longue période, le prix théorique des actions est difficile à estimer précisément. La valeur fondamentale des actions s’estime difficilement, même lorsque le profit est simplement égal à sa valeur de longue période.

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  • Dominique Pépin, 2010. "L’évaluation du prix des actions par les fondamentaux : analyse du marché français," Économie et Prévision, Programme National Persée, vol. 195(4), pages 83-98.
  • Handle: RePEc:prs:ecoprv:ecop_0249-4744_2010_num_195_4_8062
    DOI: 10.3406/ecop.2010.8062
    Note: DOI:10.3406/ecop.2010.8062
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