Marathon Petroleum Corporation, together with its subsidiaries, operates as an integrated downstream energy company primarily in the United States. It operates in two segments, Refining & Marketing, and Midstream.

HF Sinclair Corporation operates as an independent energy company. It produces and markets gasoline, diesel fuel, jet fuel, renewable diesel, specialty lubricant products, specialty chemicals, specialty and modified asphalt, and others.

PBF Energy Inc., together with its subsidiaries, engages in refining and supplying petroleum products. The company operates in two segments, Refining and Logistics.

Sunoco LP, together with its subsidiaries, distributes and retails motor fuels in the United States. It operates in two segments, Fuel Distribution and Marketing, and All Other.

Valero Energy Corporation manufactures, markets, and sells transportation fuels and petrochemical products in the United States, Canada, the United Kingdom, Ireland, and internationally.

CVR Energy, Inc., together with its subsidiaries, engages in the petroleum refining and nitrogen fertilizer manufacturing activities in the United States.

Delek US Holdings, Inc. engages in the integrated downstream energy business in the United States. The company operates through three segments: Refining, Logistics, and Retail.

Delek Logistics Partners, LP owns and operates logistics and marketing assets for crude oil, and intermediate and refined products in the United States.

CrossAmerica Partners LP engages in the wholesale distribution of motor fuels, operation of convenience stores, and ownership and leasing of real estate used in the retail distribution of motor fuels in the United States.