Επενδυτικός ορίζοντας και η διαστρωματική σχέση μεταξύ μέσης απόδοσης και βήτα
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Keywords
Υπόδειγμα αποτίμησης κεφαλαιακών στοιχείων ; Χρηματιστήριο Γαλλίας ; Χρηματιστήριο Γερμανίας ; Χρηματιστήριο Ηνωμένου Βασιλείου ; Markowitz ; Συντελεστής βήτα ; ΧαρτοφυλάκιαAbstract
In the past there were several investigations to determine the reliability of the Capital Asset Pricing Model.The results arising differed between surveys making it even more difficult an informed opinion on the validity of the C.A.P.M. On this study we investigate the ratio of average return and beta in different investment horizons in order to check the validity of the model.We used daily, weekly and monthly closing prices traded in three major European stock exchanges, England, France, Germany, for the period 2000- 2015.Our methodology is based on Fama and Macbeth (1973) study .According to the results we obtained from the three countries we studied, it has emerged the conclusion that there isn’t a linear relationship between the average yield and beta while the square of the beta coefficient and the standard deviation of the portfolio is not statistically significant for the average performance.