As of June 2026, 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 Ag Ventures Limited (18.49 lakhs shares / 50.01%), Cosmopolitan Investments Private Limited (9.05 lakhs shares / 24.50%) and Duncan International (India) private Ltd (2019 shares / 0.05%).