Özet:

In order to be successful, oil companies should consider important factors such as efficiency, efficiency, and performance. The efficiency of oil companies increases their competitiveness in international markets. Therefore, oil companies should use their resources effectively in order to increase their productivity. The effectiveness of companies allows determining where they are in a competitive environment. In this study, it is measured and compared to whether the oil companies (Atlantic, Eurasian, Aygaz, Mepet, Opet, Turcas, Tüpraş, and Petkim) registered in Borsa Istanbul are effective or not. Data Envelopment Analysis (DEA) method was used for efficiency measurement. In the analysis, four inputs and two output variables calculated using the 2017 financial statements of companies are used as data. As a result of the analysis, it was concluded that five of the eight oil companies (Aygaz, Mepet, Opet Tüpraş, and Petkim) were fully effective, while three companies (Atlantic, Eurasia, and Turcas) were not fully effective. In order to make ineffective enterprises effective in the study, an improvement should be made in the reduction of input variables.

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