Fortune Top 500 Turkish Companies Ranking is a transparent and objective ranking of companies drawn up on the basis of scientific measures where no companies are anonymous for the first time in Turkey and any required data are complete in the light of the criteria developed through experience of US Fortune spanning many years. The survey, which is meticulously conducted, has been considered by academic and business circles as a reliable reference since its inception. Today, the fact that many academic studies on companies in Turkey refer to Fortune 500 Turkey data is a major indicator of trust in the survey. Inclusion on Fortune Top 500 Turkey is recognized as a symbol of prestige. Fortune Top 500 Turkey Survey covering the industries of manufacturing, trade, services, construction and power has been drawn up jointly by Dun & Bradstreet (D&B), a world leader in areas of operation with a subsidiary in Turkey, Finar A.Ş. Releasing an annual list, Fortune Turkey ranked Çalık Enerji 56th in the list of year 2013.