Symbol Grade Name Industry
AAV Grade d Advantage Oil & Gas Ltd Oil & Gas Exploration and Production
AE Grade c Adams Resources & Energy, Inc. Petroleum Product Wholesale
AHGP Grade d Alliance Holdings GP, L.P. - Coal
AM Grade f Antero Midstream Partners LP Natural Gas Pipeline
AMGP Grade d Antero Midstream GP LP Oil Related Services and Equipment
AMID Grade d American Midstream Partners, LP Oil & Gas Refining and Marketing
AMRC Grade c Ameresco, Inc. Renewable Energy Services
AMTX Grade f Aemetis, Inc Ethanol Fuels
ANDV Grade d Andeavor Oil & Gas Refining and Marketing
ANDX Grade c Andeavor Logistics LP Oil & Gas Transportation Services
ANW Grade f Aegean Marine Petroleum Network Inc. Oil & Gas Refining and Marketing
APA Grade f Apache Corporation Oil & Gas Exploration and Production
APC Grade a Anadarko Petroleum Corporation Oil & Gas Exploration and Production
APLP Grade b Archrock Partners, L.P. Oil Related Services and Equipment
APU Grade d AmeriGas Partners, L.P. Oil & Gas Refining and Marketing
AR Grade c Antero Resources Corporation Oil & Gas Exploration and Production
AREX Grade b Approach Resources Inc. Oil & Gas Exploration and Production
ARLP Grade f Alliance Resource Partners, L.P. - Coal
AROC Grade c Archrock, Inc. Oil Related Services and Equipment
AXAS Grade c Abraxas Petroleum Corporation Oil & Gas Exploration and Production
BBG Grade a Bill Barrett Corporation Oil & Gas Exploration and Production
BCEI Grade d Bonanza Creek Energy, Inc. Oil Exploration & Production - Onshore
BHGE Grade d Baker Hughes, a GE company Oil Related Services and Equipment
BKEP Grade f Blueknight Energy Partners L.P., L.L.C. Oil & Gas Transportation Services
BLDP Grade d Ballard Power Systems, Inc. Renewable Energy Equipment & Services
BP Grade c BP p.l.c. Oil & Gas Refining and Marketing
BPL Grade f Buckeye Partners L.P. Oil & Gas Transportation Services
BPMP Grade d BP Midstream Partners LP Oil & Gas Transportation Services
BPT Grade c BP Prudhoe Bay Royalty Trust Petroleum Refining
BRN Grade c Barnwell Industries, Inc. Oil & Gas Exploration and Production
BRS Grade a Bristow Group Inc. Oil Related Services and Equipment
BSM Grade b Black Stone Minerals, L.P. Oil & Gas Exploration and Production
BTE Grade d Baytex Energy Corp Oil & Gas Exploration and Production
BWEN Grade f Broadwind Energy, Inc. Wind Systems & Equipment
BWP Grade d Boardwalk Pipeline Partners LP Natural Gas Pipeline
BXE Grade f Bellatrix Exploration Oil & Gas Exploration and Production
CAPL Grade b CrossAmerica Partners LP Petroleum Product Wholesale
CCJ Grade d Cameco Corporation Uranium
CCLP Grade a CSI Compressco LP Oil Related Services and Equipment
CCR Grade d CONSOL Coal Resources LP Coal
CDEV Grade c Centennial Resource Development, Inc. Integrated Oil & Gas
CEI Grade f Camber Energy, Inc. Oil Exploration & Production - Onshore
CELP Grade c Cypress Energy Partners, L.P. Oil Related Services
CEO Grade c CNOOC Limited Oil & Gas Exploration and Production
CEQP Grade a Crestwood Equity Partners LP Oil & Gas Refining and Marketing
CGG Grade f CGG Oil Related Services
CHK Grade d Chesapeake Energy Corporation Oil & Gas Exploration and Production
CHKR Grade f Chesapeake Granite Wash Trust Oil & Gas Exploration and Production
CHNR Grade f China Natural Resources, Inc. Coal
CIR Grade c CIRCOR International, Inc. Oil Related Equipment
CKH Grade c SEACOR Holdings Inc. Oil Related Services
CKX Grade b CKX Lands, Inc. Oil & Gas Exploration and Production
CLB Grade c Core Laboratories N.V. Oil Related Services and Equipment
CLD Grade f Cloud Peak Energy Inc Coal
CLMT Grade c Calumet Specialty Products Partners, L.P. Petroleum Refining
CLNE Grade f Clean Energy Fuels Corp. Oil & Gas Refining and Marketing
CLR Grade c Continental Resources, Inc. Oil & Gas Exploration and Production
CNQ Grade d Canadian Natural Resources Limited Oil & Gas Exploration and Production
CNX Grade c CONSOL Energy Inc. Coal
CNXM Grade b CNX Midstream Partners LP Natural Gas Pipeline
COG Grade d Cabot Oil & Gas Corporation Oil & Gas Exploration and Production
COP Grade b ConocoPhillips Oil & Gas Exploration and Production
CPE Grade d Callon Petroleum Company Oil & Gas Exploration and Production
CQH Grade b Cheniere Energy Partners LP Holdings, LLC LNG Transportation & Storage
CQP Grade b Cheniere Energy Partners, LP Oil & Gas Transportation Services
CRC Grade b California Resources Corporation Oil & Gas Exploration and Production
CRK Grade c Comstock Resources, Inc. Oil & Gas Exploration and Production
CRR Grade d Carbo Ceramics, Inc. Oil Related Services and Equipment
CRZO Grade c Carrizo Oil & Gas, Inc. Oil & Gas Exploration and Production
CSIQ Grade d Canadian Solar Inc. Photovoltaic Solar Systems & Equipment
CVE Grade d Cenovus Energy Inc Oil & Gas Refining and Marketing
CVI Grade c CVR Energy Inc. Petroleum Refining
CVRR Grade c CVR Refining, LP Oil & Gas Refining and Marketing
CVX Grade d Chevron Corporation Petroleum Refining
CXO Grade b Concho Resources Inc. Oil & Gas Exploration and Production
CZZ Grade a Cosan Limited Oil & Gas Refining and Marketing
DCP Grade c DCP Midstream, LP Natural Gas Pipeline
DHT Grade b DHT Holdings, Inc. Sea-Borne Tankers
DK Grade c Delek US Holdings, Inc. Petroleum Refining
DKL Grade c Delek Logistics Partners, L.P. Oil & Gas Transportation Services
DLNG Grade f Dynagas LNG Partners LP LNG Transportation & Storage
DM Grade f Dominion Midstream Partners, LP LNG Transportation & Storage
DNN Grade c Denison Mines Corp Uranium Mining
DNR Grade b Denbury Resources Inc. Oil & Gas Exploration and Production
DO Grade c Diamond Offshore Drilling, Inc. Oil & Gas Drilling
DQ Grade b Daqo New Energy Corp. Photovoltaic Solar Systems & Equipment
DRQ Grade c Dril-Quip, Inc. Oil Related Equipment
DVN Grade f Devon Energy Corporation Oil & Gas Exploration and Production
DWSN Grade c Dawson Geophysical Company Oil Related - Surveying & Mapping Services
E Grade c ENI S.p.A. Integrated Oil & Gas
EC Grade a Ecopetrol S.A. Integrated Oil & Gas
ECA Grade c Encana Corporation Oil & Gas Exploration and Production
ECR Grade f Eclipse Resources Corporation Oil & Gas Exploration and Production
ECT Grade d ECA Marcellus Trust I Oil & Gas Exploration and Production
EEP Grade f Enbridge Energy, L.P. Class A Oil & Gas Transportation Services
EEQ Grade f Enbridge Energy Management LLC Oil & Gas Transportation Services
EGN Grade b Energen Corporation Oil & Gas Exploration and Production
EGY Grade b Vaalco Energy Inc Oil & Gas Exploration and Production
EMES Grade f Emerge Energy Services LP Oil Related Services and Equipment
ENB Grade f Enbridge Inc Oil & Gas Transportation Services
ENBL Grade d Enable Midstream Partners, LP Oil & Gas Transportation Services
ENLC Grade d EnLink Midstream, LLC Oil & Gas Transportation Services
ENLK Grade d EnLink Midstream Partners, LP Oil & Gas Transportation Services
ENPH Grade b Enphase Energy, Inc. Photovoltaic Solar Systems & Equipment
ENRJ Grade f EnerJex Resources, Inc. Oil Exploration & Production - Onshore
ENSV Grade a Enservco Corporation Oil Related Services and Equipment
EOG Grade c EOG Resources, Inc. Oil & Gas Exploration and Production
EPD Grade c Enterprise Products Partners L.P. Oil & Gas Transportation Services
EPE Grade f EP Energy Corporation Oil & Gas Exploration and Production
EPM Grade b Evolution Petroleum Corporation, Inc. Oil Exploration & Production - Onshore
EQGP Grade f EQT GP Holdings, LP Oil & Gas Exploration and Production
EQM Grade f EQT Midstream Partners, LP Oil & Gas Transportation Services
EQT Grade d EQT Corporation Oil & Gas Exploration and Production
ERF Grade a Enerplus Corporation Oil & Gas Exploration and Production
ERN Grade a Erin Energy Corp. Oil & Gas Exploration and Production
ESES Grade d Eco-Stim Energy Solutions, Inc. Oil Related Services and Equipment
ESTE Grade d Earthstone Energy, Inc. Oil & Gas Exploration and Production
ESV Grade d Ensco plc Oil & Gas Drilling
ETE Grade d Energy Transfer Equity, L.P. Natural Gas Pipeline
ETP Grade b Energy Transfer Partners, L.P. Oil & Gas Transportation Services
EVA Grade f Enviva Partners, LP Biomass & Biogas Fuels
EVEP Grade f EV Energy Partners, L.P. Oil & Gas Exploration and Production
EXTN Grade d Exterran Corporation Oil Related Services and Equipment
EXXI Grade f Energy XXI Gulf Coast, Inc. Oil & Gas Exploration and Production
FANG Grade b Diamondback Energy, Inc. Oil & Gas Exploration and Production
FCEL Grade c FuelCell Energy, Inc. Renewable Energy Equipment & Services
FELP Grade f Foresight Energy LP Coal
FET Grade d Forum Energy Technologies, Inc. Oil Related Services and Equipment
FF Grade f FutureFuel Corp. Biodiesel
FGP Grade f Ferrellgas Partners, L.P. Oil Related Services and Equipment
FI Grade d Frank's International N.V. Oil Related Services and Equipment
FMSA Grade d FMSA Holdings Inc. Oil Related Services and Equipment
FRAC Grade d Keane Group, Inc. Oil Related Services
FRO Grade d Frontline Ltd. Oil & Gas Transportation Services
FSLR Grade c First Solar, Inc. Photovoltaic Solar Systems & Equipment
FTK Grade b Flotek Industries, Inc. Oil Related Services and Equipment
GBR Grade c New Concept Energy, Inc Oil & Gas Exploration and Production
GEL Grade f Genesis Energy, L.P. Oil & Gas Transportation Services
GEOS Grade f Geospace Technologies Corporation Oil Related Services and Equipment
GEVO Grade f Gevo, Inc. Renewable Fuels
GIFI Grade d Gulf Island Fabrication, Inc. Oil Related Services and Equipment
GLNG Grade c Golar LNG Limited LNG Transportation & Storage
GLOG Grade c GasLog Ltd. LNG Transportation & Storage
GLOP Grade c GasLog Partners LP LNG Transportation & Storage
GLP Grade d Global Partners LP Global Partners LP Petroleum Product Wholesale
GMLP Grade d Golar LNG Partners LP LNG Transportation & Storage
GNRT Grade b Gener8 Maritime, Inc. Sea-Borne Tankers
GPOR Grade d Gulfport Energy Corporation Oil & Gas Exploration and Production
GPP Grade d Green Plains Partners LP Renewable Fuels
GPRE Grade a Green Plains Renewable Energy, Inc. Ethanol Fuels
HAL Grade c Halliburton Company Oil Related Services and Equipment
HEP Grade d Holly Energy Partners, L.P. Oil Pipeline
HES Grade c Hess Corporation Oil & Gas Refining and Marketing
HESM Grade d Hess Midstream Partners LP LNG Transportation & Storage
HFC Grade c HollyFrontier Corporation Petroleum Refining
HGT Grade d Hugoton Royalty Trust Oil & Gas Exploration and Production
HLX Grade d Helix Energy Solutions Group, Inc. Oil Related Services and Equipment
HMLP Grade f Hoegh LNG Partners LP Sea-Borne Tankers
HNRG Grade d Hallador Energy Company Coal
HP Grade b Helmerich & Payne, Inc. Oil & Gas Drilling
HQCL Grade a Hanwha Q CELLS Co., Ltd. Renewable Energy Equipment & Services
HUSA Grade f Houston American Energy Corporation Oil & Gas Exploration and Production
IMO Grade f Imperial Oil Limited Oil & Gas Refining and Marketing
INT Grade f World Fuel Services Corporation Petroleum Product Wholesale
IO Grade b Ion Geophysical Corporation Oil Related Services and Equipment
IPWR Grade f Ideal Power Inc. Renewable Energy Equipment & Services
ISRL Grade d Isramco, Inc. Oil & Gas Exploration and Production
JAG Grade d Jagged Peak Energy Inc. Unconventional Oil & Gas Drilling
JASO Grade c JA Solar Holdings, Co., Ltd. Renewable Energy Equipment & Services
JKS Grade f JinkoSolar Holding Company Limited Photovoltaic Solar Systems & Equipment
JONE Grade f Jones Energy, Inc. Oil & Gas Exploration and Production
KMI Grade f Kinder Morgan, Inc. Oil & Gas Transportation Services
KNOP Grade d KNOT Offshore Partners LP Sea-Borne Tankers
KOS Grade d Kosmos Energy Ltd. Oil & Gas Exploration and Production
KRP Grade a Kimbell Royalty Partners Integrated Oil & Gas
LGCY Grade a Legacy Reserves LP Oil & Gas Exploration and Production
LGCYO Grade b Legacy Reserves LP - 8.00% Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units Oil & Gas Exploration and Production
LGCYP Grade b Legacy Reserves LP - 8% Series A Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units Oil & Gas Exploration and Production
LLEX Grade d Lilis Energy, Inc. Oil & Gas Exploration and Production
LNG Grade b Cheniere Energy, Inc. LNG Transportation & Storage
LPG Grade c Dorian LPG Ltd. Sea-Borne Tankers
LPI Grade d Laredo Petroleum Holdings, Inc. Oil & Gas Exploration and Production
MCEP Grade a Mid-Con Energy Partners, LP Oil & Gas Exploration and Production
MCF Grade f Contango Oil & Gas Company Oil & Gas Exploration and Production
MDR Grade c McDermott International, Inc. Oil Related Services and Equipment
MIND Grade d Mitcham Industries, Inc. Oil Related Services and Equipment
MMP Grade f Magellan Midstream Partners L.P. Limited Partnership Oil & Gas Transportation Services
MNGA Grade f MagneGas Corporation] Hydrogen Fuel
MPC Grade c Marathon Petroleum Corporation Oil & Gas Refining and Marketing
MPLX Grade c MPLX LP Oil & Gas Transportation Services
MRO Grade c Marathon Oil Corporation Oil & Gas Exploration and Production
MTDR Grade c Matador Resources Company Oil & Gas Exploration and Production
MTR Grade c Mesa Royalty Trust Oil & Gas Exploration and Production
MTRX Grade c Matrix Service Company Oil Related Services and Equipment
MUR Grade d Murphy Oil Corporation Oil & Gas Exploration and Production
MUSA Grade c Murphy USA Inc. Gasoline stations
MVO Grade c MV Oil Trust Units of Beneficial Interests Oil & Gas Exploration and Production
MXC Grade d Mexco Energy Corporation Oil & Gas Exploration and Production
NAT Grade f Nordic American Tankers Limited Sea-Borne Tankers
NBL Grade b Noble Energy Inc. Oil & Gas Exploration and Production
NBLX Grade c Noble Midstream Partners LP Oil & Gas Transportation Services
NBR Grade d Nabors Industries Ltd. Oil & Gas Drilling
NCSM Grade d NCS Multistage Holdings, Inc. Oil Related Services and Equipment
NDRO Grade a Enduro Royalty Trust Trust Units Oil & Gas Exploration and Production
NFX Grade f Newfield Exploration Company Oil & Gas Exploration and Production
NGL Grade d NGL Energy Partners LP Oil & Gas Refining and Marketing
NGS Grade c Natural Gas Services Group, Inc. Oil Related Equipment
NOA Grade a North American Energy Partners, Inc. Oil Related Services
NOG Grade c Northern Oil and Gas, Inc. Oil & Gas Exploration and Production
NOV Grade b National Oilwell Varco, Inc. Oil Related Services and Equipment
NR Grade c Newpark Resources, Inc. Oil Related Services and Equipment
NRP Grade c Natural Resource Partners LP Limited Partnership Coal
NRT Grade a North European Oil Royality Trust Oil & Gas Exploration and Production
NS Grade f Nustar Energy L.P. Oil Pipeline
NSH Grade f Nustar GP Holdings, LLC Units Oil Pipeline
NVGS Grade b Navigator Holdings Ltd. LNG Transportation & Storage
OAS Grade b Oasis Petroleum Inc. Unconventional Oil & Gas Production
OBE Grade d Obsidian Energy Ltd. Oil Exploration & Production - Onshore
OII Grade d Oceaneering International, Inc. Oil Related Services and Equipment
OIS Grade c Oil States International, Inc. Oil Related Equipment
OKE Grade a ONEOK, Inc. Oil & Gas Transportation Services
OMP Grade d Oasis Midstream Partners LP Oil Related Services and Equipment
OXY Grade c Occidental Petroleum Corporation Oil & Gas Exploration and Production
PAA Grade c Plains All American Pipeline, L.P. Oil & Gas Transportation Services
PAGP Grade f Plains Group Holdings, L.P. Oil & Gas Transportation Services
PBA Grade c Pembina Pipeline Corp. Oil & Gas Transportation Services
PBF Grade c PBF Energy Inc. Oil & Gas Refining and Marketing
PBFX Grade c PBF Logistics LP Oil & Gas Transportation Services
PBR Grade a Petroleo Brasileiro S.A.- Petrobras Integrated Oil & Gas
PBR.A Grade a Petroleo Brasileiro S.A.- Petrobras Integrated Oil & Gas
PDCE Grade b PDC Energy, Inc. Oil & Gas Exploration and Production
PDS Grade a Precision Drilling Corporation Oil & Gas Drilling
PE Grade d Parsley Energy, Inc. Oil & Gas Exploration and Production
PEIX Grade d Pacific Ethanol, Inc. Ethanol Fuels
PER Grade f SandRidge Permian Trust Oil & Gas Exploration and Production
PES Grade c Pioneer Energy Services Corp. Oil & Gas Drilling
PFIE Grade b Profire Energy, Inc. Oil Related Services
PGH Grade d Pengrowth Energy Corporation Oil & Gas Exploration and Production
PHII Grade c PHI, Inc. - Voting Oil Related Services and Equipment
PHIIK Grade d PHI, Inc. - Non-Voting Oil Related Services and Equipment
PHX Grade d Panhandle Oil and Gas Inc Oil & Gas Exploration and Production
PKD Grade f Parker Drilling Company Oil & Gas Drilling
PLUG Grade d Plug Power, Inc. Stationary Fuel Cells
PNRG Grade a PrimeEnergy Corporation Oil & Gas Exploration and Production
PQ Grade f Petroquest Energy Inc Oil & Gas Exploration and Production
PSX Grade c Phillips 66 Oil & Gas Refining and Marketing
PSXP Grade c Phillips 66 Partners LP Oil & Gas Transportation Services
PTEN Grade d Patterson-UTI Energy, Inc. Oil & Gas Drilling
PTR Grade c PetroChina Company Limited Integrated Oil & Gas
PUMP Grade c ProPetro Holding Corp. Oil Related Services and Equipment
PXD Grade b Pioneer Natural Resources Company Oil & Gas Exploration and Production
PZE Grade c Petrobras Argentina S.A. ADS Integrated Oil & Gas
QEP Grade d QEP Resources, Inc. Integrated Oil & Gas
RCON Grade d Recon Technology, Ltd. Oil Related Services and Equipment
RDC Grade c Rowan Companies plc Oil & Gas Drilling
RDS.A Grade c Royal Dutch Shell PLC Class A Integrated Oil & Gas
RDS.B Grade c Royal Dutch Shell PLC Royal Dutch Shell PLC Class B Integrated Oil & Gas
REGI Grade b Renewable Energy Group, Inc. Biomass & Biogas Fuels
REN Grade a Resolute Energy Corporation Oil Exploration & Production - Onshore
RES Grade d RPC, Inc. Oil Related Services and Equipment
REX Grade c REX American Resources Corporation Ethanol Fuels
REXX Grade f Rex Energy Corporation Oil & Gas Exploration and Production
RIG Grade c Transocean Ltd (Switzerland) Oil & Gas Drilling
RMP Grade d Rice Midstream Partners LP LNG Transportation & Storage
RNET Grade d RigNet, Inc. Oil Related Services
RNGR Grade f Ranger Energy Services, Inc. Oil Related Services and Equipment
ROSE Grade f Rosehill Resources Inc. Oil & Gas Exploration and Production
ROYT Grade a Pacific Coast Oil Trust Units of Beneficial Interest Oil & Gas Exploration and Production
RRC Grade d Range Resources Corporation Oil & Gas Exploration and Production
RSPP Grade c RSP Permian, Inc. Oil & Gas Exploration and Production
RUN Grade a Sunrun Inc. Renewable Energy Equipment & Services
SBR Grade c Sabine Royalty Trust Oil & Gas Exploration and Production
SDLP Grade c Seadrill Partners LLC Oil Drilling - Offshore
SDR Grade d SandRidge Mississippian Trust II Oil & Gas Exploration and Production
SDRL Grade d Seadrill Oil & Gas Drilling
SDT Grade d SandRidge Mississippian Trust Oil & Gas Exploration and Production
SEDG Grade a SolarEdge Technologies, Inc. Photovoltaic Solar Systems & Equipment
SEMG Grade f Semgroup Corporation Oil & Gas Transportation Services
SEP Grade f Spectra Energy Partners, LP Oil & Gas Transportation Services
SES Grade f Synthesis Energy Systems, Inc. Renewable Energy Equipment & Services
SFL Grade c Ship Finance International Limited Oil & Gas Transportation Services
SGU Grade d Star Gas Partners, L.P. Oil & Gas Refining and Marketing
SHI Grade b SINOPEC Shangai Petrochemical Company, Ltd. Petroleum Refining
SHLX Grade f Shell Midstream Partners, L.P. Oil & Gas Transportation Services
SJT Grade b San Juan Basin Royalty Trust Oil & Gas Exploration and Production
SLB Grade d Schlumberger N.V. Oil Related Services and Equipment
SM Grade c SM Energy Company Oil & Gas Exploration and Production
SMLP Grade f Summit Midstream Partners, LP Oil & Gas Transportation Services
SN Grade f Sanchez Energy Corporation Oil & Gas Exploration and Production
SNMP Grade d Sanchez Midstream Partners LP Natural Gas Exploration & Production - Onshore
SNP Grade a China Petroleum & Chemical Corporation Oil & Gas Refining and Marketing
SOI Grade d Solaris Oilfield Infrastructure, Inc. Oil Related Services and Equipment
SOL Grade d Renesola Ltd. Renewable Energy Equipment & Services
SPH Grade b Suburban Propane Partners, L.P. Oil & Gas Refining and Marketing
SPI Grade d SPI Energy Co., Ltd. Photovoltaic Solar Systems & Equipment
SPN Grade d Superior Energy Services, Inc. Oil Related Services and Equipment
SPWR Grade f SunPower Corporation Photovoltaic Solar Systems & Equipment
SRCI Grade b SRC Energy Inc. Oil & Gas Exploration and Production
SRLP Grade d Sprague Resources LP Oil & Gas Refining and Marketing
SSL Grade b Sasol Ltd. Oil & Gas Refining and Marketing
STNG Grade d Scorpio Tankers Inc. Sea-Borne Tankers
STO Grade b Statoil ASA Integrated Oil & Gas
SU Grade c Suncor Energy Inc. Oil & Gas Refining and Marketing
SUN Grade a Sunoco LP Petroleum Product Wholesale
SUNW Grade f Sunworks, Inc. Photovoltaic Solar Systems & Equipment
SWN Grade d Southwestern Energy Company Oil & Gas Exploration and Production
SXE Grade f Southcross Energy Partners, L.P. Oil & Gas Transportation Services
TA Grade f TravelCenters of America LLC Gasoline stations
TAT Grade b TransAtlantic Petroleum Ltd Oil & Gas Exploration and Production
TCP Grade f TC PipeLines, LP Natural Gas Pipeline
TDW Grade d Tidewater Inc. Oil Related Services and Equipment
TEGP Grade f Tallgrass Energy GP, LP Oil & Gas Transportation Services
TELL Grade f Tellurian Inc. Oil & Gas Exploration and Production
TEP Grade d Tallgrass Energy Partners, LP Oil & Gas Transportation Services
TGA Grade d Transglobe Energy Corp Oil & Gas Exploration and Production
TGC Grade c Tengasco, Inc. Oil & Gas Exploration and Production
TGEN Grade d Tecogen Inc Renewable Energy Equipment & Services
TGP Grade c Teekay LNG Partners L.P. LNG Transportation & Storage
TGS Grade c Transportadora de Gas del Sur SA TGS Oil & Gas Exploration and Production
TK Grade d Teekay Corporation Sea-Borne Tankers
TLP Grade f Transmontaigne Partners L.P. Transmontaigne Partners L.P. Oil Pipeline
TNK Grade d Teekay Tankers Ltd. Oil & Gas Transportation Services
TOO Grade b Teekay Offshore Partners L.P. Oil & Gas Transportation Services
TOT Grade a Total S.A. Integrated Oil & Gas
TPIC Grade b TPI Composites, Inc. Wind Systems & Equipment
TPL Grade a Texas Pacific Land Trust Oil & Gas Exploration and Production
TRCH Grade c Torchlight Energy Resources, Inc. Oil & Gas Exploration and Production
TRGP Grade c Targa Resources, Inc. Oil & Gas Transportation Services
TRP Grade d TransCanada Corporation Oil & Gas Transportation Services
TS Grade b Tenaris S.A. Oil Related Equipment
TTI Grade c Tetra Technologies, Inc. Oil Related Services and Equipment
TUSK Grade b Mammoth Energy Services, Inc. Oil & Gas Drilling
UEC Grade d Uranium Energy Corp. Uranium
UGP Grade a Ultrapar Participacoes S.A. Gasoline stations
UNT Grade c Unit Corporation Oil & Gas Exploration and Production
URG Grade c Ur Energy Inc Uranium Mining
USAC Grade a USA Compression Partners, LP Oil Related Services and Equipment
UUUU Grade f Energy Fuels Inc Uranium Mining
VET Grade c Vermilion Energy Inc. Oil & Gas Exploration and Production
VLO Grade b Valero Energy Corporation Oil & Gas Refining and Marketing
VLP Grade f Valero Energy Partners LP Oil & Gas Transportation Services
VNOM Grade c Viper Energy Partners LP Oil & Gas Exploration and Production
VOC Grade c VOC Energy Trust Units of Beneficial Interest Integrated Oil & Gas
WES Grade d Western Gas Partners, LP Limited Partner Interests Oil & Gas Refining and Marketing
WG Grade f Willbros Group, Inc. (DE) Oil Related Services
WGP Grade d Western Gas Equity Partners, LP Oil & Gas Refining and Marketing
WLB Grade f Westmoreland Coal Company Coal
WLL Grade b Whiting Petroleum Corporation Oil & Gas Exploration and Production
WMB Grade d Williams Companies, Inc. (The) Oil & Gas Transportation Services
WMLP Grade f Westmoreland Resource Partners, LP Coal
WPX Grade b WPX Energy, Inc. Oil & Gas Exploration and Production
WPXP Grade b WPX Energy, Inc. 6.25% Series A Mandatory Convertible Preferred Stock Oil & Gas Exploration and Production
WPZ Grade d Williams Partners L.P. Oil & Gas Exploration and Production
WRD Grade b WildHorse Resource Development Corporation Oil & Gas Exploration and Production
WTI Grade c W&T Offshore, Inc. Oil & Gas Exploration and Production
WTTR Grade f Select Energy Services, Inc. Oil Related Services
WWR Grade f Westwater Resources, Inc. Uranium Mining
XEC Grade d Cimarex Energy Co Oil & Gas Exploration and Production
XOG Grade d Extraction Oil & Gas, Inc. Oil & Gas Exploration and Production
XOM Grade f Exxon Mobil Corporation Oil & Gas Refining and Marketing
YGE Grade d Yingli Green Energy Holding Company Limited ADR Renewable Energy Equipment & Services
YPF Grade b YPF Sociedad Anonima Integrated Oil & Gas
ZN Grade a Zion Oil & Gas Inc Oil & Gas Exploration and Production

Symbol Grade Name Industry
AAV Grade d Advantage Oil & Gas Ltd Oil & Gas Exploration and Production
AE Grade c Adams Resources & Energy, Inc. Petroleum Product Wholesale
AHGP Grade d Alliance Holdings GP, L.P. - Coal
AM Grade f Antero Midstream Partners LP Natural Gas Pipeline
AMGP Grade d Antero Midstream GP LP Oil Related Services and Equipment
AMID Grade d American Midstream Partners, LP Oil & Gas Refining and Marketing
AMRC Grade c Ameresco, Inc. Renewable Energy Services
AMTX Grade f Aemetis, Inc Ethanol Fuels
ANDV Grade d Andeavor Oil & Gas Refining and Marketing
ANDX Grade c Andeavor Logistics LP Oil & Gas Transportation Services
ANW Grade f Aegean Marine Petroleum Network Inc. Oil & Gas Refining and Marketing
APA Grade f Apache Corporation Oil & Gas Exploration and Production
APC Grade a Anadarko Petroleum Corporation Oil & Gas Exploration and Production
APLP Grade b Archrock Partners, L.P. Oil Related Services and Equipment
APU Grade d AmeriGas Partners, L.P. Oil & Gas Refining and Marketing
AR Grade c Antero Resources Corporation Oil & Gas Exploration and Production
AREX Grade b Approach Resources Inc. Oil & Gas Exploration and Production
ARLP Grade f Alliance Resource Partners, L.P. - Coal
AROC Grade c Archrock, Inc. Oil Related Services and Equipment
AXAS Grade c Abraxas Petroleum Corporation Oil & Gas Exploration and Production
BBG Grade a Bill Barrett Corporation Oil & Gas Exploration and Production
BCEI Grade d Bonanza Creek Energy, Inc. Oil Exploration & Production - Onshore
BHGE Grade d Baker Hughes, a GE company Oil Related Services and Equipment
BKEP Grade f Blueknight Energy Partners L.P., L.L.C. Oil & Gas Transportation Services
BLDP Grade d Ballard Power Systems, Inc. Renewable Energy Equipment & Services
BP Grade c BP p.l.c. Oil & Gas Refining and Marketing
BPL Grade f Buckeye Partners L.P. Oil & Gas Transportation Services
BPMP Grade d BP Midstream Partners LP Oil & Gas Transportation Services
BPT Grade c BP Prudhoe Bay Royalty Trust Petroleum Refining
BRN Grade c Barnwell Industries, Inc. Oil & Gas Exploration and Production
BRS Grade a Bristow Group Inc. Oil Related Services and Equipment
BSM Grade b Black Stone Minerals, L.P. Oil & Gas Exploration and Production
BTE Grade d Baytex Energy Corp Oil & Gas Exploration and Production
BWEN Grade f Broadwind Energy, Inc. Wind Systems & Equipment
BWP Grade d Boardwalk Pipeline Partners LP Natural Gas Pipeline
BXE Grade f Bellatrix Exploration Oil & Gas Exploration and Production
CAPL Grade b CrossAmerica Partners LP Petroleum Product Wholesale
CCJ Grade d Cameco Corporation Uranium
CCLP Grade a CSI Compressco LP Oil Related Services and Equipment
CCR Grade d CONSOL Coal Resources LP Coal
CDEV Grade c Centennial Resource Development, Inc. Integrated Oil & Gas
CEI Grade f Camber Energy, Inc. Oil Exploration & Production - Onshore
CELP Grade c Cypress Energy Partners, L.P. Oil Related Services
CEO Grade c CNOOC Limited Oil & Gas Exploration and Production
CEQP Grade a Crestwood Equity Partners LP Oil & Gas Refining and Marketing
CGG Grade f CGG Oil Related Services
CHK Grade d Chesapeake Energy Corporation Oil & Gas Exploration and Production
CHKR Grade f Chesapeake Granite Wash Trust Oil & Gas Exploration and Production
CHNR Grade f China Natural Resources, Inc. Coal
CIR Grade c CIRCOR International, Inc. Oil Related Equipment
CKH Grade c SEACOR Holdings Inc. Oil Related Services
CKX Grade b CKX Lands, Inc. Oil & Gas Exploration and Production
CLB Grade c Core Laboratories N.V. Oil Related Services and Equipment
CLD Grade f Cloud Peak Energy Inc Coal
CLMT Grade c Calumet Specialty Products Partners, L.P. Petroleum Refining
CLNE Grade f Clean Energy Fuels Corp. Oil & Gas Refining and Marketing
CLR Grade c Continental Resources, Inc. Oil & Gas Exploration and Production
CNQ Grade d Canadian Natural Resources Limited Oil & Gas Exploration and Production
CNX Grade c CONSOL Energy Inc. Coal
CNXM Grade b CNX Midstream Partners LP Natural Gas Pipeline
COG Grade d Cabot Oil & Gas Corporation Oil & Gas Exploration and Production
COP Grade b ConocoPhillips Oil & Gas Exploration and Production
CPE Grade d Callon Petroleum Company Oil & Gas Exploration and Production
CQH Grade b Cheniere Energy Partners LP Holdings, LLC LNG Transportation & Storage
CQP Grade b Cheniere Energy Partners, LP Oil & Gas Transportation Services
CRC Grade b California Resources Corporation Oil & Gas Exploration and Production
CRK Grade c Comstock Resources, Inc. Oil & Gas Exploration and Production
CRR Grade d Carbo Ceramics, Inc. Oil Related Services and Equipment
CRZO Grade c Carrizo Oil & Gas, Inc. Oil & Gas Exploration and Production
CSIQ Grade d Canadian Solar Inc. Photovoltaic Solar Systems & Equipment
CVE Grade d Cenovus Energy Inc Oil & Gas Refining and Marketing
CVI Grade c CVR Energy Inc. Petroleum Refining
CVRR Grade c CVR Refining, LP Oil & Gas Refining and Marketing
CVX Grade d Chevron Corporation Petroleum Refining
CXO Grade b Concho Resources Inc. Oil & Gas Exploration and Production
CZZ Grade a Cosan Limited Oil & Gas Refining and Marketing
DCP Grade c DCP Midstream, LP Natural Gas Pipeline
DHT Grade b DHT Holdings, Inc. Sea-Borne Tankers
DK Grade c Delek US Holdings, Inc. Petroleum Refining
DKL Grade c Delek Logistics Partners, L.P. Oil & Gas Transportation Services
DLNG Grade f Dynagas LNG Partners LP LNG Transportation & Storage
DM Grade f Dominion Midstream Partners, LP LNG Transportation & Storage
DNN Grade c Denison Mines Corp Uranium Mining
DNR Grade b Denbury Resources Inc. Oil & Gas Exploration and Production
DO Grade c Diamond Offshore Drilling, Inc. Oil & Gas Drilling
DQ Grade b Daqo New Energy Corp. Photovoltaic Solar Systems & Equipment
DRQ Grade c Dril-Quip, Inc. Oil Related Equipment
DVN Grade f Devon Energy Corporation Oil & Gas Exploration and Production
DWSN Grade c Dawson Geophysical Company Oil Related - Surveying & Mapping Services
E Grade c ENI S.p.A. Integrated Oil & Gas
EC Grade a Ecopetrol S.A. Integrated Oil & Gas
ECA Grade c Encana Corporation Oil & Gas Exploration and Production
ECR Grade f Eclipse Resources Corporation Oil & Gas Exploration and Production
ECT Grade d ECA Marcellus Trust I Oil & Gas Exploration and Production
EEP Grade f Enbridge Energy, L.P. Class A Oil & Gas Transportation Services
EEQ Grade f Enbridge Energy Management LLC Oil & Gas Transportation Services
EGN Grade b Energen Corporation Oil & Gas Exploration and Production
EGY Grade b Vaalco Energy Inc Oil & Gas Exploration and Production
EMES Grade f Emerge Energy Services LP Oil Related Services and Equipment
ENB Grade f Enbridge Inc Oil & Gas Transportation Services
ENBL Grade d Enable Midstream Partners, LP Oil & Gas Transportation Services
ENLC Grade d EnLink Midstream, LLC Oil & Gas Transportation Services
ENLK Grade d EnLink Midstream Partners, LP Oil & Gas Transportation Services
ENPH Grade b Enphase Energy, Inc. Photovoltaic Solar Systems & Equipment
ENRJ Grade f EnerJex Resources, Inc. Oil Exploration & Production - Onshore
ENSV Grade a Enservco Corporation Oil Related Services and Equipment
EOG Grade c EOG Resources, Inc. Oil & Gas Exploration and Production
EPD Grade c Enterprise Products Partners L.P. Oil & Gas Transportation Services
EPE Grade f EP Energy Corporation Oil & Gas Exploration and Production
EPM Grade b Evolution Petroleum Corporation, Inc. Oil Exploration & Production - Onshore
EQGP Grade f EQT GP Holdings, LP Oil & Gas Exploration and Production
EQM Grade f EQT Midstream Partners, LP Oil & Gas Transportation Services
EQT Grade d EQT Corporation Oil & Gas Exploration and Production
ERF Grade a Enerplus Corporation Oil & Gas Exploration and Production
ERN Grade a Erin Energy Corp. Oil & Gas Exploration and Production
ESES Grade d Eco-Stim Energy Solutions, Inc. Oil Related Services and Equipment
ESTE Grade d Earthstone Energy, Inc. Oil & Gas Exploration and Production
ESV Grade d Ensco plc Oil & Gas Drilling
ETE Grade d Energy Transfer Equity, L.P. Natural Gas Pipeline
ETP Grade b Energy Transfer Partners, L.P. Oil & Gas Transportation Services
EVA Grade f Enviva Partners, LP Biomass & Biogas Fuels
EVEP Grade f EV Energy Partners, L.P. Oil & Gas Exploration and Production
EXTN Grade d Exterran Corporation Oil Related Services and Equipment
EXXI Grade f Energy XXI Gulf Coast, Inc. Oil & Gas Exploration and Production
FANG Grade b Diamondback Energy, Inc. Oil & Gas Exploration and Production
FCEL Grade c FuelCell Energy, Inc. Renewable Energy Equipment & Services
FELP Grade f Foresight Energy LP Coal
FET Grade d Forum Energy Technologies, Inc. Oil Related Services and Equipment
FF Grade f FutureFuel Corp. Biodiesel
FGP Grade f Ferrellgas Partners, L.P. Oil Related Services and Equipment
FI Grade d Frank's International N.V. Oil Related Services and Equipment
FMSA Grade d FMSA Holdings Inc. Oil Related Services and Equipment
FRAC Grade d Keane Group, Inc. Oil Related Services
FRO Grade d Frontline Ltd. Oil & Gas Transportation Services
FSLR Grade c First Solar, Inc. Photovoltaic Solar Systems & Equipment
FTK Grade b Flotek Industries, Inc. Oil Related Services and Equipment
GBR Grade c New Concept Energy, Inc Oil & Gas Exploration and Production
GEL Grade f Genesis Energy, L.P. Oil & Gas Transportation Services
GEOS Grade f Geospace Technologies Corporation Oil Related Services and Equipment
GEVO Grade f Gevo, Inc. Renewable Fuels
GIFI Grade d Gulf Island Fabrication, Inc. Oil Related Services and Equipment
GLNG Grade c Golar LNG Limited LNG Transportation & Storage
GLOG Grade c GasLog Ltd. LNG Transportation & Storage
GLOP Grade c GasLog Partners LP LNG Transportation & Storage
GLP Grade d Global Partners LP Global Partners LP Petroleum Product Wholesale
GMLP Grade d Golar LNG Partners LP LNG Transportation & Storage
GNRT Grade b Gener8 Maritime, Inc. Sea-Borne Tankers
GPOR Grade d Gulfport Energy Corporation Oil & Gas Exploration and Production
GPP Grade d Green Plains Partners LP Renewable Fuels
GPRE Grade a Green Plains Renewable Energy, Inc. Ethanol Fuels
HAL Grade c Halliburton Company Oil Related Services and Equipment
HEP Grade d Holly Energy Partners, L.P. Oil Pipeline
HES Grade c Hess Corporation Oil & Gas Refining and Marketing
HESM Grade d Hess Midstream Partners LP LNG Transportation & Storage
HFC Grade c HollyFrontier Corporation Petroleum Refining
HGT Grade d Hugoton Royalty Trust Oil & Gas Exploration and Production
HLX Grade d Helix Energy Solutions Group, Inc. Oil Related Services and Equipment
HMLP Grade f Hoegh LNG Partners LP Sea-Borne Tankers
HNRG Grade d Hallador Energy Company Coal
HP Grade b Helmerich & Payne, Inc. Oil & Gas Drilling
HQCL Grade a Hanwha Q CELLS Co., Ltd. Renewable Energy Equipment & Services
HUSA Grade f Houston American Energy Corporation Oil & Gas Exploration and Production
IMO Grade f Imperial Oil Limited Oil & Gas Refining and Marketing
INT Grade f World Fuel Services Corporation Petroleum Product Wholesale
IO Grade b Ion Geophysical Corporation Oil Related Services and Equipment
IPWR Grade f Ideal Power Inc. Renewable Energy Equipment & Services
ISRL Grade d Isramco, Inc. Oil & Gas Exploration and Production
JAG Grade d Jagged Peak Energy Inc. Unconventional Oil & Gas Drilling
JASO Grade c JA Solar Holdings, Co., Ltd. Renewable Energy Equipment & Services
JKS Grade f JinkoSolar Holding Company Limited Photovoltaic Solar Systems & Equipment
JONE Grade f Jones Energy, Inc. Oil & Gas Exploration and Production
KMI Grade f Kinder Morgan, Inc. Oil & Gas Transportation Services
KNOP Grade d KNOT Offshore Partners LP Sea-Borne Tankers
KOS Grade d Kosmos Energy Ltd. Oil & Gas Exploration and Production
KRP Grade a Kimbell Royalty Partners Integrated Oil & Gas
LGCY Grade a Legacy Reserves LP Oil & Gas Exploration and Production
LGCYO Grade b Legacy Reserves LP - 8.00% Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units Oil & Gas Exploration and Production
LGCYP Grade b Legacy Reserves LP - 8% Series A Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units Oil & Gas Exploration and Production
LLEX Grade d Lilis Energy, Inc. Oil & Gas Exploration and Production
LNG Grade b Cheniere Energy, Inc. LNG Transportation & Storage
LPG Grade c Dorian LPG Ltd. Sea-Borne Tankers
LPI Grade d Laredo Petroleum Holdings, Inc. Oil & Gas Exploration and Production
MCEP Grade a Mid-Con Energy Partners, LP Oil & Gas Exploration and Production
MCF Grade f Contango Oil & Gas Company Oil & Gas Exploration and Production
MDR Grade c McDermott International, Inc. Oil Related Services and Equipment
MIND Grade d Mitcham Industries, Inc. Oil Related Services and Equipment
MMP Grade f Magellan Midstream Partners L.P. Limited Partnership Oil & Gas Transportation Services
MNGA Grade f MagneGas Corporation] Hydrogen Fuel
MPC Grade c Marathon Petroleum Corporation Oil & Gas Refining and Marketing
MPLX Grade c MPLX LP Oil & Gas Transportation Services
MRO Grade c Marathon Oil Corporation Oil & Gas Exploration and Production
MTDR Grade c Matador Resources Company Oil & Gas Exploration and Production
MTR Grade c Mesa Royalty Trust Oil & Gas Exploration and Production
MTRX Grade c Matrix Service Company Oil Related Services and Equipment
MUR Grade d Murphy Oil Corporation Oil & Gas Exploration and Production
MUSA Grade c Murphy USA Inc. Gasoline stations
MVO Grade c MV Oil Trust Units of Beneficial Interests Oil & Gas Exploration and Production
MXC Grade d Mexco Energy Corporation Oil & Gas Exploration and Production
NAT Grade f Nordic American Tankers Limited Sea-Borne Tankers
NBL Grade b Noble Energy Inc. Oil & Gas Exploration and Production
NBLX Grade c Noble Midstream Partners LP Oil & Gas Transportation Services
NBR Grade d Nabors Industries Ltd. Oil & Gas Drilling
NCSM Grade d NCS Multistage Holdings, Inc. Oil Related Services and Equipment
NDRO Grade a Enduro Royalty Trust Trust Units Oil & Gas Exploration and Production
NFX Grade f Newfield Exploration Company Oil & Gas Exploration and Production
NGL Grade d NGL Energy Partners LP Oil & Gas Refining and Marketing
NGS Grade c Natural Gas Services Group, Inc. Oil Related Equipment
NOA Grade a North American Energy Partners, Inc. Oil Related Services
NOG Grade c Northern Oil and Gas, Inc. Oil & Gas Exploration and Production
NOV Grade b National Oilwell Varco, Inc. Oil Related Services and Equipment
NR Grade c Newpark Resources, Inc. Oil Related Services and Equipment
NRP Grade c Natural Resource Partners LP Limited Partnership Coal
NRT Grade a North European Oil Royality Trust Oil & Gas Exploration and Production
NS Grade f Nustar Energy L.P. Oil Pipeline
NSH Grade f Nustar GP Holdings, LLC Units Oil Pipeline
NVGS Grade b Navigator Holdings Ltd. LNG Transportation & Storage
OAS Grade b Oasis Petroleum Inc. Unconventional Oil & Gas Production
OBE Grade d Obsidian Energy Ltd. Oil Exploration & Production - Onshore
OII Grade d Oceaneering International, Inc. Oil Related Services and Equipment
OIS Grade c Oil States International, Inc. Oil Related Equipment
OKE Grade a ONEOK, Inc. Oil & Gas Transportation Services
OMP Grade d Oasis Midstream Partners LP Oil Related Services and Equipment
OXY Grade c Occidental Petroleum Corporation Oil & Gas Exploration and Production
PAA Grade c Plains All American Pipeline, L.P. Oil & Gas Transportation Services
PAGP Grade f Plains Group Holdings, L.P. Oil & Gas Transportation Services
PBA Grade c Pembina Pipeline Corp. Oil & Gas Transportation Services
PBF Grade c PBF Energy Inc. Oil & Gas Refining and Marketing
PBFX Grade c PBF Logistics LP Oil & Gas Transportation Services
PBR Grade a Petroleo Brasileiro S.A.- Petrobras Integrated Oil & Gas
PBR.A Grade a Petroleo Brasileiro S.A.- Petrobras Integrated Oil & Gas
PDCE Grade b PDC Energy, Inc. Oil & Gas Exploration and Production
PDS Grade a Precision Drilling Corporation Oil & Gas Drilling
PE Grade d Parsley Energy, Inc. Oil & Gas Exploration and Production
PEIX Grade d Pacific Ethanol, Inc. Ethanol Fuels
PER Grade f SandRidge Permian Trust Oil & Gas Exploration and Production
PES Grade c Pioneer Energy Services Corp. Oil & Gas Drilling
PFIE Grade b Profire Energy, Inc. Oil Related Services
PGH Grade d Pengrowth Energy Corporation Oil & Gas Exploration and Production
PHII Grade c PHI, Inc. - Voting Oil Related Services and Equipment
PHIIK Grade d PHI, Inc. - Non-Voting Oil Related Services and Equipment
PHX Grade d Panhandle Oil and Gas Inc Oil & Gas Exploration and Production
PKD Grade f Parker Drilling Company Oil & Gas Drilling
PLUG Grade d Plug Power, Inc. Stationary Fuel Cells
PNRG Grade a PrimeEnergy Corporation Oil & Gas Exploration and Production
PQ Grade f Petroquest Energy Inc Oil & Gas Exploration and Production
PSX Grade c Phillips 66 Oil & Gas Refining and Marketing
PSXP Grade c Phillips 66 Partners LP Oil & Gas Transportation Services
PTEN Grade d Patterson-UTI Energy, Inc. Oil & Gas Drilling
PTR Grade c PetroChina Company Limited Integrated Oil & Gas
PUMP Grade c ProPetro Holding Corp. Oil Related Services and Equipment
PXD Grade b Pioneer Natural Resources Company Oil & Gas Exploration and Production
PZE Grade c Petrobras Argentina S.A. ADS Integrated Oil & Gas
QEP Grade d QEP Resources, Inc. Integrated Oil & Gas
RCON Grade d Recon Technology, Ltd. Oil Related Services and Equipment
RDC Grade c Rowan Companies plc Oil & Gas Drilling
RDS.A Grade c Royal Dutch Shell PLC Class A Integrated Oil & Gas
RDS.B Grade c Royal Dutch Shell PLC Royal Dutch Shell PLC Class B Integrated Oil & Gas
REGI Grade b Renewable Energy Group, Inc. Biomass & Biogas Fuels
REN Grade a Resolute Energy Corporation Oil Exploration & Production - Onshore
RES Grade d RPC, Inc. Oil Related Services and Equipment
REX Grade c REX American Resources Corporation Ethanol Fuels
REXX Grade f Rex Energy Corporation Oil & Gas Exploration and Production
RIG Grade c Transocean Ltd (Switzerland) Oil & Gas Drilling
RMP Grade d Rice Midstream Partners LP LNG Transportation & Storage
RNET Grade d RigNet, Inc. Oil Related Services
RNGR Grade f Ranger Energy Services, Inc. Oil Related Services and Equipment
ROSE Grade f Rosehill Resources Inc. Oil & Gas Exploration and Production
ROYT Grade a Pacific Coast Oil Trust Units of Beneficial Interest Oil & Gas Exploration and Production
RRC Grade d Range Resources Corporation Oil & Gas Exploration and Production
RSPP Grade c RSP Permian, Inc. Oil & Gas Exploration and Production
RUN Grade a Sunrun Inc. Renewable Energy Equipment & Services
SBR Grade c Sabine Royalty Trust Oil & Gas Exploration and Production
SDLP Grade c Seadrill Partners LLC Oil Drilling - Offshore
SDR Grade d SandRidge Mississippian Trust II Oil & Gas Exploration and Production
SDRL Grade d Seadrill Oil & Gas Drilling
SDT Grade d SandRidge Mississippian Trust Oil & Gas Exploration and Production
SEDG Grade a SolarEdge Technologies, Inc. Photovoltaic Solar Systems & Equipment
SEMG Grade f Semgroup Corporation Oil & Gas Transportation Services
SEP Grade f Spectra Energy Partners, LP Oil & Gas Transportation Services
SES Grade f Synthesis Energy Systems, Inc. Renewable Energy Equipment & Services
SFL Grade c Ship Finance International Limited Oil & Gas Transportation Services
SGU Grade d Star Gas Partners, L.P. Oil & Gas Refining and Marketing
SHI Grade b SINOPEC Shangai Petrochemical Company, Ltd. Petroleum Refining
SHLX Grade f Shell Midstream Partners, L.P. Oil & Gas Transportation Services
SJT Grade b San Juan Basin Royalty Trust Oil & Gas Exploration and Production
SLB Grade d Schlumberger N.V. Oil Related Services and Equipment
SM Grade c SM Energy Company Oil & Gas Exploration and Production
SMLP Grade f Summit Midstream Partners, LP Oil & Gas Transportation Services
SN Grade f Sanchez Energy Corporation Oil & Gas Exploration and Production
SNMP Grade d Sanchez Midstream Partners LP Natural Gas Exploration & Production - Onshore
SNP Grade a China Petroleum & Chemical Corporation Oil & Gas Refining and Marketing
SOI Grade d Solaris Oilfield Infrastructure, Inc. Oil Related Services and Equipment
SOL Grade d Renesola Ltd. Renewable Energy Equipment & Services
SPH Grade b Suburban Propane Partners, L.P. Oil & Gas Refining and Marketing
SPI Grade d SPI Energy Co., Ltd. Photovoltaic Solar Systems & Equipment
SPN Grade d Superior Energy Services, Inc. Oil Related Services and Equipment
SPWR Grade f SunPower Corporation Photovoltaic Solar Systems & Equipment
SRCI Grade b SRC Energy Inc. Oil & Gas Exploration and Production
SRLP Grade d Sprague Resources LP Oil & Gas Refining and Marketing
SSL Grade b Sasol Ltd. Oil & Gas Refining and Marketing
STNG Grade d Scorpio Tankers Inc. Sea-Borne Tankers
STO Grade b Statoil ASA Integrated Oil & Gas
SU Grade c Suncor Energy Inc. Oil & Gas Refining and Marketing
SUN Grade a Sunoco LP Petroleum Product Wholesale
SUNW Grade f Sunworks, Inc. Photovoltaic Solar Systems & Equipment
SWN Grade d Southwestern Energy Company Oil & Gas Exploration and Production
SXE Grade f Southcross Energy Partners, L.P. Oil & Gas Transportation Services
TA Grade f TravelCenters of America LLC Gasoline stations
TAT Grade b TransAtlantic Petroleum Ltd Oil & Gas Exploration and Production
TCP Grade f TC PipeLines, LP Natural Gas Pipeline
TDW Grade d Tidewater Inc. Oil Related Services and Equipment
TEGP Grade f Tallgrass Energy GP, LP Oil & Gas Transportation Services
TELL Grade f Tellurian Inc. Oil & Gas Exploration and Production
TEP Grade d Tallgrass Energy Partners, LP Oil & Gas Transportation Services
TGA Grade d Transglobe Energy Corp Oil & Gas Exploration and Production
TGC Grade c Tengasco, Inc. Oil & Gas Exploration and Production
TGEN Grade d Tecogen Inc Renewable Energy Equipment & Services
TGP Grade c Teekay LNG Partners L.P. LNG Transportation & Storage
TGS Grade c Transportadora de Gas del Sur SA TGS Oil & Gas Exploration and Production
TK Grade d Teekay Corporation Sea-Borne Tankers
TLP Grade f Transmontaigne Partners L.P. Transmontaigne Partners L.P. Oil Pipeline
TNK Grade d Teekay Tankers Ltd. Oil & Gas Transportation Services
TOO Grade b Teekay Offshore Partners L.P. Oil & Gas Transportation Services
TOT Grade a Total S.A. Integrated Oil & Gas
TPIC Grade b TPI Composites, Inc. Wind Systems & Equipment
TPL Grade a Texas Pacific Land Trust Oil & Gas Exploration and Production
TRCH Grade c Torchlight Energy Resources, Inc. Oil & Gas Exploration and Production
TRGP Grade c Targa Resources, Inc. Oil & Gas Transportation Services
TRP Grade d TransCanada Corporation Oil & Gas Transportation Services
TS Grade b Tenaris S.A. Oil Related Equipment
TTI Grade c Tetra Technologies, Inc. Oil Related Services and Equipment
TUSK Grade b Mammoth Energy Services, Inc. Oil & Gas Drilling
UEC Grade d Uranium Energy Corp. Uranium
UGP Grade a Ultrapar Participacoes S.A. Gasoline stations
UNT Grade c Unit Corporation Oil & Gas Exploration and Production
URG Grade c Ur Energy Inc Uranium Mining
USAC Grade a USA Compression Partners, LP Oil Related Services and Equipment
UUUU Grade f Energy Fuels Inc Uranium Mining
VET Grade c Vermilion Energy Inc. Oil & Gas Exploration and Production
VLO Grade b Valero Energy Corporation Oil & Gas Refining and Marketing
VLP Grade f Valero Energy Partners LP Oil & Gas Transportation Services
VNOM Grade c Viper Energy Partners LP Oil & Gas Exploration and Production
VOC Grade c VOC Energy Trust Units of Beneficial Interest Integrated Oil & Gas
WES Grade d Western Gas Partners, LP Limited Partner Interests Oil & Gas Refining and Marketing
WG Grade f Willbros Group, Inc. (DE) Oil Related Services
WGP Grade d Western Gas Equity Partners, LP Oil & Gas Refining and Marketing
WLB Grade f Westmoreland Coal Company Coal
WLL Grade b Whiting Petroleum Corporation Oil & Gas Exploration and Production
WMB Grade d Williams Companies, Inc. (The) Oil & Gas Transportation Services
WMLP Grade f Westmoreland Resource Partners, LP Coal
WPX Grade b WPX Energy, Inc. Oil & Gas Exploration and Production
WPXP Grade b WPX Energy, Inc. 6.25% Series A Mandatory Convertible Preferred Stock Oil & Gas Exploration and Production
WPZ Grade d Williams Partners L.P. Oil & Gas Exploration and Production
WRD Grade b WildHorse Resource Development Corporation Oil & Gas Exploration and Production
WTI Grade c W&T Offshore, Inc. Oil & Gas Exploration and Production
WTTR Grade f Select Energy Services, Inc. Oil Related Services
WWR Grade f Westwater Resources, Inc. Uranium Mining
XEC Grade d Cimarex Energy Co Oil & Gas Exploration and Production
XOG Grade d Extraction Oil & Gas, Inc. Oil & Gas Exploration and Production
XOM Grade f Exxon Mobil Corporation Oil & Gas Refining and Marketing
YGE Grade d Yingli Green Energy Holding Company Limited ADR Renewable Energy Equipment & Services
YPF Grade b YPF Sociedad Anonima Integrated Oil & Gas
ZN Grade a Zion Oil & Gas Inc Oil & Gas Exploration and Production