Sezgisel Bulanık TOPSİS Yöntemiyle Portföy Seçimi: Borsa İstanbul’da Bir Uygulama

Abstract

In this study, the best performing companies of BIST were determined and the performances of different portfolios which consists of the stocks of these companies were analyzed. The Intuinistionic Fuzzy TOPSIS method was used in the selection of stocks to be included in the portfolios. In the study, 15 different portfolios were created over 5 years and the performances of these portfolios were compared with each other and with the BIST 100 index. İt has been determined that portfolios which are created with stocks selected with the Intuinistionic Fuzzy TOPSIS method perform much better than the BIST 100 index in both rising and falling markets. As a result of the study, it was concluded that the Intuinistionic Fuzzy TOPSIS method is useful for determining the stocks to be included in the portfolio and it would be beneficial for investors to use this method when creating a portfolio.