محاولة لدراسة سلوك عوائد المحافظ الأوروبية وفقا لفرضية كفاءة الأسواق المالية

الملخص EN

In this article, we re-examine the subject of effcient market hypothesis, and we trying to explain behavior returns of european portfolios, this article evaluates the robustness capital asset pricing model (CAPM) ( who use only the β ) to explaining the returns .

we find that (CAPM) model does a good job but he need other factors to explaining the returns.