With four companies, Eren Holding ranked among Turkey's largest companies in the Istanbul Chamber of Industry's 2013 "Turkey's Top 500 Industrial Enterprises" survey. Eren Enerji ranked 48th on the list, became the largest independent private-sector electricity producer in 2013, as it was the previous year. Modern Karton ranked 136th on the list, maintaining its lead in the paper and paper products manufacturing sector. Modern Ambalaj ranked 280th, while Denizli Çimento ranked 437th.