As of December 2025 Plains GP has a market cap of NZ$7.47 Billion. This makes Plains GP the world's 3307th 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.
On Dec 9th, 2025 the market cap of Plains GP was reported to be: