Plains GP Holdings, L.P. is a holding company with a focus on midstream energy infrastructure in the US and Canada, operating through subsidiary, Plains All American Pipeline, L.P. Their business consists of two segments - Crude Oil and Natural Gas Liquids (NGLs), offering transportation, terminalling, processing, and storage services. The company boasts an extensive collection of assets, including pipelines, gathering systems, tanks, rail terminals, trucks, and more.