NuStar GP Holdings, LLC owns general partner and limited partner interests in NuStar Energy L.P. that engages in the transportation of petroleum products and anhydrous ammonia, the terminalling, and storage of petroleum products and the marketing of petroleum products. The Company operates through three segments: pipeline, storage, and fuels marketing. Its pipeline segment is engaged in the transportation of refined petroleum products, crude oil, and anhydrous ammonia. The storage segment consists of facilities that provide storage, handling and other services for petroleum products, crude oil, specialty chemicals and other liquids. The fuels marketing segment involves the purchase of crude oil, fuel oil, bunker fuel, fuel oil blending components and other refined products for resale. The company merged with NuStar Energy.