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Inc.",16],["Marathon Oil Corp.",12],["Dow Chemical Co.",8],["AMVAC Chemical Corp.",7],["Chiquita Brands International Inc.",7],["Devon Energy Corp.",7],["Dole Food Company Inc.",7],["Georgia-Pacific LLC",7],["Marathon Petroleum Corp.",6],["CF Industries Holdings Inc.",5],["Huntington Ingalls Industries Inc.",5],["International Paper Co.",5],["Noble Energy Inc.",5],["BP PLC",4],["Entergy Corp.",4],["Foster Wheeler AG.",4],["Murphy Oil Corp.",4],["Murphy USA Inc.",4],["APA Corp.",3],["Air Products \u0026 Chemicals Inc.",3],["Cox Operating LLC",3],["DuPont de Nemours Inc.",3],["Freeport-McMoRan Inc.",3],["General Electric Co.",3],["Hess Corp.",3],["Honeywell International Inc.",3],["Paramount Global",3],["Pfizer Inc.",3],["3M Co.",2],["Acme Truck Line Inc.",2],["Aetna Inc.",2],["Apache Inc.",2],["Apex Oil Co. Inc.",2],["Armour Group Holdings Ltd.",2],["BASF SE",2],["BHP Billiton Ltd.",2],["Bausch Health Cos. Inc.",2],["Bayer AG",2],["Bayer CropScience Ltd.",2],["Canadian National Railway Company",2],["Caterpillar Inc.",2],["Celanese Corp.",2],["Clayton Williams Energy, Inc.",2],["ConocoPhillips",2],["Deere \u0026 Co.",2],["Gatx Corporation",2],["Granite State Insurance Co.",2],["Halliburton Co.",2],["Ingersoll-Rand Co.",2],["Kaiser Aluminum Corp.",2],["LB Foster Co.",2],["LLOG Exploration Co. LLC",2],["Lloyd's America Inc.",2],["Mississippi Power Co.",2],["Monsanto Co.",2],["Mosaic",2],["Pioneer Natural Resources Co.",2],["RLI Corp.",2],["Stone Energy Corp",2],["Tenneco Inc.",2],["Texas Brine Co. LLC",2],["The Lubrizol Corp.",2],["Trinity Industries Inc.",2],["Turner Industries Group LLC",2],["Union Tank Car Co.",2],["Westinghouse Electric Corp.",2],["AEP Texas",1],["AXA XL Ltd.",1],["Acadian Ambulance Service Inc.",1],["Acceptance Insurance Co. Inc.",1],["Air Liquide",1],["Alabama Power",1],["Alabama Power Co.",1],["Allergan PLC",1],["Alliant Insurance Services Inc.",1],["Allianz SE",1],["Alpha Metallurgical Resources Inc.",1],["Ameren Corp.",1],["American Commercial Barge Line LLC",1],["Appalachian Power",1],["Arch Resources Inc.",1],["Aspen Insurance Holdings Ltd.",1],["Axiall Corp.",1],["BNSF Railway Co.",1],["Baker Hughes Inc.",1],["Baxter International Inc.",1],["Berkshire Hathaway Energy GT\u0026S",1],["Berkshire Hathaway Inc.",1],["Berry Petroleum Co. LLC",1],["Boardwalk Pipeline Partners LP",1],["Boasso Global Inc.",1],["BorgWarner Inc.",1],["Bridgestone Corp.",1],["Browning Oil Co. Inc.",1],["Burke Inc.",1],["CBS Corp.",1],["CONSOL Energy Inc.",1],["Cabot Corp.",1],["Callon Petroleum Co.",1],["Canal Insurance Co.",1],["Carolina Casualty Insurance Co.",1],["Castex Energy Inc.",1],["Cemex, S.A.B. de C.V.",1],["Chicago Bridge \u0026 Iron Co. NV",1],["Chubb Ltd.",1],["Cleveland Construction Inc.",1],["Compass Minerals International, Inc.",1],["Cracker Barrel Old Country Store Inc.",1],["Crosstex International Inc.",1],["DTE Energy Co.",1],["Dominion Energy Inc.",1],["Duke Energy Corp.",1],["Dune Energy, Inc",1],["EOG Resources Inc.",1],["Edison International",1],["Edison Mission Energy",1],["EnLink Midstream LLC",1],["Energen Corporation",1],["Energy Future Holdings Corp.",1],["Ensco PLC",1],["Ferro Corp.",1],["First Acceptance Corp.",1],["Fisk Electric Co. Inc.",1],["Florida Power \u0026 Light Co.",1],["Ford Motor Co.",1],["Formosa Plastics Corp.",1],["Frontier Communications Corp.",1],["Geico Corp.",1],["General Reinsurance Corp.",1],["Genuine Parts Co.",1],["Georgia Power Co.",1],["Gilbane Inc.",1],["Goodrich Petroleum Corporation",1],["Graphic Packaging Holding Co.",1],["Groendyke Transport Inc.",1],["Gulf Oil Limited Partnership",1],["HKN, Inc",1],["Haynes International, Inc.",1],["Hertz Global Holdings Inc.",1],["Hexion Holdings LLC",1],["Hornbeck Offshore Services, Inc.",1],["Hudson Insurance Group",1],["ITW Angleboard AB",1],["Illinois Tool Works Inc.",1],["Indiana Michigan Power",1],["International Coal Group, Inc.",1],["J.M. Huber Corp.",1],["KBR Inc.",1],["Kaiser-Francis Oil Co.",1],["Koch Industries Inc.",1],["Legion Insurance Co.",1],["Louisiana Insurance Guaranty Association",1],["Louisiana Workers Compensation Corp.",1],["Magnetek, Inc.",1],["Marquette Transportation Co. LLC",1],["Morton Salt Inc.",1],["NL Industries Inc.",1],["NRG Energy Inc.",1],["Nanometrics Incorporated",1],["National American Insurance Co.",1],["National Fuel Gas Co.",1],["National Indemnity Co.",1],["National Oilwell Varco Inc.",1],["New York Life Insurance Co.",1],["Northland Insurance Co.",1],["Northrop Grumman Corp.",1],["Oil States International Inc.",1],["Old Republic General Insurance Group",1],["Old Republic Insurance Co.",1],["Olin Corp.",1],["Ovintiv Inc.",1],["PNC Financial Services Group Inc. ",1],["Pan-American Life Insurance Group Inc.",1],["Peabody Energy Corp.",1],["Peterbilt Motors Co.",1],["Petrohawk Energy Corporation",1],["Petroleum Helicopters International Inc.",1],["Pirelli \u0026 Co.",1],["Progressive Casualty Insurance Co.",1],["Prudential Financial Inc.",1],["Public Service Co of Oklahoma",1],["Rio Tinto Group",1],["Sabine Oil \u0026 Gas Corp.",1],["Samson Resources Corp.",1],["Sanchez Oil \u0026 Gas Corp.",1],["Scottsdale Insurance Co.",1],["Sears Holdings Corp.",1],["Sempra Energy",1],["Sentry Insurance Group",1],["Southern California Edison Co.",1],["Southern Power Co.",1],["Southwestern Electric Power Co.",1],["State Farm Mutual Automobile Insurance Co.",1],["Statoil ASA",1],["Stewart Enterprises, Inc.",1],["Swiss Reinsurance Co. Ltd.",1],["Syngenta AG",1],["The AES Corp.",1],["The Cigna Group",1],["The Goodyear Tire \u0026 Rubber Co.",1],["The Home Insurance Co.",1],["The Turner Corp.",1],["Tidewater, Inc.",1],["Todd Shipyards Corporation",1],["Tredegar Corporation",1],["Tronox Holdings PLC",1],["Unisys Corp.",1],["United Services Automobile Association",1],["United States Steel Corp.",1],["Utica Mutual Insurance Co. Inc.",1],["Valero Energy Corp.",1],["Vulcan Materials Co.",1],["Weatherford International Ltd.",1],["Westmoreland Coal Co",1],["Xcel Energy Inc.",1],["Zurn Industries LLC",1]]