['ORG | Garanti_Bankasi', 'ORG | Turkish_conglomerate_Koc_Holding', 'ORG | energy_giant_Tupras', 'exchangeName | BIST_100']
By market capitalization, the leading companies of the BIST 100 were Turkish conglomerate Koc Holding, energy giant Tupras, and Garanti Bankasi.