The use of data envelopment analysis for stocks selection on Istanbul stock exchange

In this paper, the author describes how, in order to select securities in the context of data envelopment analysis (DEA), one must evaluate the financial performances of companies whose securities are traded on the Istanbul stock exchange in terms of outputs and inputs (such as a variety of its financial ratios), and then performance measurement is assigned to each of these companies. The efficient companies are identified. Also, inefficient companies are explored as to which sources and what amount of inefficiencies are present