Social and Economic Perspectives on Sustainability (Edited by: M. Mustafa Erdoğdu, Aslı Yüksel Mermod, Olcay Bige Aşkun Yıldırım) 201 15 A Research on Sustainability Indices: BIST Sustainability Index Artür Yetvart Mumcu Ozan Emre Ufacık Abstract The purpose of this study is to observe the sustainability performance of enterprises in Borsa Istanbul (BIST) Sustainability Index. Under this study, the research is carried out into what the corporate sustainability is and into the purpose of BIST sustainability index. In this study, literature research was carried out; BIST Sustainability Index website and the websites of 43 enterprises on this index were also investigated. Results indicate that all of the sustainability reports of enterprises on Bist Sustainability Index were found out to be complete and conclusive. The study has revealed that the importance of the sustainability in Turkey and the fact that the enterprises were on this index, enough effort is being made. This paper suggests to apply BIST Sustainability Index to all enterprises in Borsa Istanbul. Keywords: Sustainability, Sustainability Report, BIST, Turkey 1. Introduction orporate sustainability activities have recently started to occupy an important place of all enterprises in the capital markets. Corporate sustainability is emerged with similar definitions in many studies. Sustainability grounds the development debate in a global framework, within a continuous satisfaction of human needs constitute the ultimate goal (Newell & Pizer 2002). Another definition for corporate sustainability is a business approach that creates long-term shareholder value by embracing opportunities and managing risk from economic, environmental and social dimensions (Dow Jones C