As of March 2024, 74.56% is owned by Indian Promoters and 25.44% by Public.

Top three Promoters holding highest number of shares of Duncan Engineering company are Oriental Carbon & Chemicals Ltd (18.49 lakhs shares / 50.01%), Cosmopolitan Investments Ltd (9.05 lakhs shares / 24.50%) and Duncan International (India) Limited (2019 shares / 0.05%).