As of December 2025, 67.29% is owned by Promoters and 32.71% by Public.

Among Promoters holding, Indian Promoters holds 51.89% and Foreign Promoters holds 15.40%.

Institutional holds 13.89% (Insurance Companies 0.25%) and Non-Institutional holds 18.82% as Public shareholders.

Top two Promoters holding highest number of shares of Chennai Petro. company are Indian Oil Corporation Limited (772.65 lakhs shares / 51.89%) and Naftiran Inter Trade Company Ltd (229.33 lakhs shares / 15.40%).