YPF ypf sociedad anonima NYSE Integrated oil Companies XOM exxon mobil corporation NYSE Integrated oil Companies WWD woodward, inc. NASDAQ Industrial Machinery/Components WTTR select energy services, inc. class a NYSE Oilfield Services/Equipment WTI w&t offshore, inc. NYSE Oil & Gas Production WRD weride inc. - american depositary shares NYSE Oil & Gas Production WPRT westport fuel systems inc - common shares NASDAQ Industrial Machinery/Components VTNR vertex energy, inc NASDAQ Integrated oil Companies VOC voc energy trust units of beneficial interest NYSE Oil & Gas Production VNOM viper energy, inc. - class a NASDAQ Oil & Gas Production VLO valero energy corporation NYSE Integrated oil Companies VET vermilion energy inc. common (canada) NYSE Oil & Gas Production USEG u.s. energy corp. NASDAQ Oil & Gas Production TUSK mammoth energy services, inc. NASDAQ Oilfield Services/Equipment TTI tetra technologies, inc. NYSE Oil & Gas Production TPL texas pacific land corporation NYSE Oil & Gas Production TPIC tpi composites, inc. NASDAQ Industrial Machinery/Components THR thermon group holdings, inc. NYSE Industrial Machinery/Components TELL tellurian inc. NASDAQ Oil & Gas Production SWN southwestern energy company NYSE Oil & Gas Production SUN sunoco lp common units representing limited partner interests NYSE Oil Refining/Marketing SU suncor energy inc. NYSE Integrated oil Companies SSL sasol ltd. american depositary shares NYSE Oil & Gas Production SOI solaris oilfield infrastructure, inc. class a NYSE Metal Fabrications SNMP evolve transition infrastructure lp common units representing class b limited liability company interests AMEX Oil & Gas Production SN sharkninja, inc. ordinary shares NYSE Oil & Gas Production SM sm energy company NYSE Oil & Gas Production SLB schlumberger n.v. NYSE Oilfield Services/Equipment SJT san juan basin royalty trust NYSE Oil & Gas Production SDRL seadrill limited common shares NYSE Oil & Gas Production SDPI superior drilling products, inc. AMEX Metal Fabrications SD sandridge energy, inc. NYSE Oil & Gas Production SBR sabine royalty trust NYSE Oil & Gas Production SBOW silverbow resorces, inc. NYSE Oil & Gas Production RRC range resources corporation NYSE Oil & Gas Production RIG transocean ltd (switzerland) NYSE Oil & Gas Production RES rpc, inc. NYSE Oilfield Services/Equipment REI ring energy, inc. AMEX Oil & Gas Production RCON recon technology, ltd. - class a ordinary shares NASDAQ Oilfield Services/Equipment PXD pioneer natural resources company NYSE Oil & Gas Production PUMP propetro holding corp. NASDAQ Oilfield Services/Equipment PTEN patterson-uti energy, inc. NASDAQ Oil & Gas Production PSX phillips 66 NYSE Integrated oil Companies PNRG primeenergy resources corporation NASDAQ Oil & Gas Production PLUG plug power, inc. NASDAQ Industrial Machinery/Components PHX phx minerals inc. NYSE Oil & Gas Production PHG koninklijke philips n.v. ny registry shares NYSE Consumer Electronics/Appliances PFIE profire energy, inc. NASDAQ Metal Fabrications PED pedevco corp. AMEX Oil & Gas Production PDS precision drilling corporation NYSE Oil & Gas Production