Özet:

Traditional portfolio management attaches importance to diversification to decrease portfolio risk modern ones offer an alternative to investors in an efficient frontier to create a portfolio with mathematical and statistical methods by using the past quantitative knowledge. Markowitz, one of the pioneers of the potfolio management, has considered the standart deviation as a risk. The abundance in the number of the selected shares make it hard to calculate the standart deviation instead of standart one. So they suggested the linear programming model as a portfolio suggestion. The models of them don’t interfere with the number of shares and its distrubution of industry branches. As a result, the portfolio might consist of the sole shares theorotically. To prevent the bad sides mentioned in the study, a linear programming that provides the maximum expected return to investors, a new model suggestion has been made by widining the additional constraints of Konno and Yamazaki’s model.