Marathon Petroleum Corporation, together with its subsidiaries, operates as an integrated downstream energy company primarily in the United States. The company operates through Refining & Marketing, and Midstream segments. The Refining & Marketing segment refines crude oil and other feedstocks at its refineries in the Gulf Coast, Mid-Continent, and West Coast regions of the United States; and purchases refined products and ethanol for resale and distributes refined products, including renewable diesel, through transportation, storage, distribution, and marketing services. Its refined products include transportation fuels, such as reformulated gasolines and blend-grade gasolines; heavy fuel oil; and asphalt. This segment also manufactures propane and petrochemicals. It sells refined products to wholesale marketing customers in the United States and internationally, buyers on the spot market, and independent entrepreneurs who operate primarily Marathon branded outlets, as well as through long-term fuel supply contracts to direct dealer locations primarily under the ARCO brand. The Midstream segment transports, stores, distributes, and markets crude oil and refined products through refining logistics assets, pipelines, terminals, towboats, and barges; gathers, processes, and transports natural gas; and gathers, transports, fractionates, stores, and markets natural gas liquids. Marathon Petroleum Corporation was founded in 1887 and is headquartered in Findlay, Ohio.

Phillips 66 operates as an energy manufacturing and logistics company in the United States, the United Kingdom, Germany, and internationally. It operates through four segments: Midstream, Chemicals, Refining, and Marketing and Specialties (M&S). The Midstream segment transports crude oil and other feedstocks; delivers refined petroleum products to market; provides terminaling and storage services for crude oil and refined petroleum products; transports, stores, fractionates, exports, and markets natural gas liquids; provides other fee-based processing services; and gathers, processes, transports, and markets natural gas. The Chemicals segment produces and markets ethylene and other olefin products; aromatics and styrenics products, such as benzene, cyclohexane, styrene, and polystyrene; and various specialty chemical products, including organosulfur chemicals, solvents, catalysts, and chemicals used in drilling and mining. The Refining segment refines crude oil and other feedstocks into petroleum products, such as gasolines, distillates, aviation, and renewable. The M&S segment purchases for resale and markets refined petroleum products, including gasolines, distillates, and aviation fuels. This segment also manufactures and markets specialty products, such as base oils and lubricants. Phillips 66 was founded in 1875 and is headquartered in Houston, Texas.

Sunoco LP, together with its subsidiaries, distributes and retails motor fuels in the United States. It operates through two segments: Fuel Distribution and Marketing, and All Other. The Fuel Distribution and Marketing segment purchases motor fuel, as well as other petroleum products, such as propane and lubricating oil from independent refiners and oil companies and supplies it to company-operated retail stores, independently operated commission agents, and retail stores, as well as other commercial customers, including unbranded retail stores, other fuel distributors, school districts, municipalities, and other industrial customers. It owns and operates retail stores under the APlus and Aloha Island Mart brand names; and offers food, beverages, snacks, grocery and non-food merchandise, motor fuels, and other services. The All Other segment includes partnership credit card services, franchise royalties, and retail operations; and offers credit card processing, car washes, lottery, automated teller machines, money order, prepaid phone cards, and wireless services. The company was formerly known as Susser Petroleum Partners LP and changed its name to Sunoco LP in 2014. Sunoco LP was founded in 1886 and is headquartered in Dallas, Texas.

Dillard's, Inc. operates retail department stores in the southeastern, southwestern, and midwestern areas of the United States. The company's stores offer merchandise, including fashion apparel for women, men, and children; and accessories, cosmetics, home furnishings, and other consumer goods. It also engages in the general contracting construction activities. Dillard's, Inc. was founded in 1938 and is based in Little Rock, Arkansas.

Murphy Oil Corporation, together with its subsidiaries, operates as an oil and gas exploration and production company in the United States, Canada, and internationally. It explores for and produces crude oil, natural gas, and natural gas liquids. The company was formerly known as Murphy Corporation and changed its name to Murphy Oil Corporation in 1964. The company was incorporated in 1950 and is headquartered in Houston, Texas.

Delek US Holdings, Inc. engages in the integrated downstream energy business in the United States. The company operates through Refining, Logistics, and Retail segments. The Refining segment processes crude oil and other feedstock for the manufacture of various grades of gasoline, diesel fuel, aviation fuel, asphalt, and other petroleum-based products that are distributed through owned and third-party product terminal. It owns and operates refineries located in Tyler, Texas; El Dorado, Arkansas; Big Spring, Texas; and Krotz Springs, Louisiana, as well as biodiesel facilities in Crossett, Arkansas, Cleburne, Texas, and New Albany, Mississippi. The Logistics segment gathers, transports, and stores crude oil, intermediate, and refined products; and markets, distributes, transports, and stores refined products, as well as disposes and recycles water for third parties. It owns or leases crude oil transportation pipelines, refined product pipelines, crude oil gathering systems, and associated crude oil storage tanks; and owns and operates light product distribution terminals, as well as markets light products using third-party terminals. The Retail segment owns and leases convenience store sites located primarily in West Texas and New Mexico. Its convenience stores offer various grades of gasoline and diesel under the DK or Alon brand; and food products and service, tobacco products, non-alcoholic and alcoholic beverages, and general merchandise, as well as money orders to the public primarily under the 7-Eleven and DK or Alon brand names. It serves oil companies, independent refiners and marketers, jobbers, distributors, utility and transportation companies, government, and independent retail fuel operators. Delek US Holdings, Inc. was founded in 2001 and is headquartered in Brentwood, Tennessee.

Arko Corp. operates convenience stores in the United States. It operates through Retail, Wholesale, Fleet Fueling, and GPMP segments. The Retail segment engages in the sale of fuel and merchandise to retail consumers. Its Wholesale segment supplies fuel to third-party dealers and consignment agents. The Fleet Fueling segment supplies fuel to proprietary and third-party cardlock, and issuance of proprietary fuel cards. Its GPMP segment supplies fuel to retail and wholesale segments. The company is based in Richmond, Virginia.

Adams Resources & Energy, Inc., through its subsidiaries, primarily engages in the marketing, transportation, terminalling, and storage of crude oil and other related products in the United States. The company operates through four segments: Crude Oil Marketing, Transportation, Pipeline and Storage, and Logistics and Repurposing. It purchases and sells crude oil to refiners and other customers primarily onshore in Texas, North Dakota, Michigan, Wyoming, Colorado, and Louisiana; owns and operates a fleet of 164 tractor-trailer rigs; and maintains pipeline inventory locations and injection stations. The company also transports liquid chemicals, pressurized gases, asphalt, and dry bulk on a hire basis in the United States, Canada, and Mexico; and operates truck terminals in Houston, Corpus Christi, Nederland, Freeport, Baton Rouge, St. Rose, Sterlington, Jacksonville, Tampa, Augusta, Mobile, Charlotte, Cincinnati, South Charleston, Memphis, East St. Louis, and Joliet. In addition, it operates crude oil and condensate pipeline system, which connects the Eagle Ford Basin to the Gulf Coast waterborne market; and transports crude oil, condensate, fuels, oils, and other petroleum products on a for hire basis in the Eagle Ford basin. The company was founded in 1947 and is headquartered in Houston, Texas.