The results of the Istanbul Chamber of Industry's (ISO) "Turkey's Top 500 Industrial Enterprises 2018 Survey" were announced. Eren Holding maintained its position as one of Turkey's largest corporations again this year. For the third time, two of the Holding's companies successfully made the top 100 list in the same year.

Eren Enerji, which rose to 29th place on the list, maintained its position as one of the largest independent private-sector electricity producers.

Modern Karton climbed to 57th and retained first place in the paper and paper products manufacturing sector, while Modern Oluklu Ambalaj and Medcem Madencilik climbed to 116th and 405th, respectively