listed shares. Our analysis concerns the risk which arises from the Markowitz mean-variance approach. Our work method will be … implemented as following: first of all, we will test the normality and the stationarity of 31 shares which have composed our … methods of measurement of return, risk and the other statistical properties constitute, in fact, the pillars of companies …

Egypt on the decision making process of travel under the effect of the risk factor “terrorist attacks of last April, 2006 …