PetroChina Company Limited is the largest Chinese oil company with a network of over 18,000 filling stations, making it one of the largest listed companies in the world.
As of February 2026 PetroChina has a market cap of C$393.82 Billion. This makes PetroChina the world's 50th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.