COMPANIES IN THIS INDUSTRY

AAV – Advantage Oil & Gas Ltd
ABACF – ABACAN RESOURCE CORP
AEDC – AMERICAN ENERGY DEVELOPMENT CORP.
AEGG – AMERICAN ENERGY GROUP LTD
AETUF – ARC RESOURCES LTD. (Foreign)
AEZ – AMERICAN OIL & GAS INC
ALDV1 – ALLIED DEVICES CORP
ALTX – ALTEX INDUSTRIES INC
AMPY – AMPLIFY ENERGY CORP
ANFC – BLACK RIDGE OIL & GAS, INC.
AOGSQ – AURORA OIL & GAS CORP
APA – Apache Corporation
APAGF – APCO OIL & GAS INTERNATIONAL INC
APC – Anadarko Petroleum Corporation
AR – Antero Resources Corporation
ARD1 – ARENA RESOURCES INC
AREX – Approach Resources Inc.
ATHL – ATHLON ENERGY INC.
ATLS – ATLAS ENERGY GROUP, LLC
ATN – ATLAS ENERGY RESOURCES, LLC
ATPG – ATP OIL & GAS CORP
AXAS – Abraxas Petroleum Corporation
AXPLF – ARABELLA EXPLORATION, INC.
AZGS – AZTEC OIL & GAS, INC.
BBEPQ – BREITBURN ENERGY PARTNERS LP
BBG – Bill Barrett Corporation
BCEI – Bonanza Creek Energy, Inc.
BDE1 – BOIS D ARC ENERGY, INC.
BEXP – BRIGHAM EXPLORATION CO
BKKN – BAKKEN RESOURCES INC
BLKG – BLACK STALLION OIL & GAS INC.
BOG – BELCO OIL & GAS CORP
BPIGF – BPI ENERGY HOLDINGS, INC.
BPZRQ – BPZ RESOURCES, INC.
BR1 – BURLINGTON RESOURCES INC
BRN – Barnwell Industries, Inc.
BRY – BERRY PETROLEUM CO
BSM – Black Stone Minerals, L.P.
BSNX – BASIN EXPLORATION INC
BTE – Baytex Energy Corp
BXE – Bellatrix Exploration Ltd
CANOQ – CANO PETROLEUM, INC
CCTC – CLEAN COAL TECHNOLOGIES INC.
CDEV – Centennial Resource Development, Inc.
CECX1 – CASTLE ENERGY CORP
CEO – CNOOC Limited
CGS – CEC RESOURCES LTD
CHAR – CHAPARRAL RESOURCES INC
CHK – Chesapeake Energy Corporation
CHPE – CHAPARRAL ENERGY, INC.
CID1 – CHIEFTAIN INTERNATIONAL INC
CIEIQ – COBALT INTERNATIONAL ENERGY, INC.
CKX – CKX Lands, Inc.
CLR – Continental Resources, Inc.
CNE – CANETIC RESOURCES TRUST (Foreign)
CNEP – CHINA NORTH EAST PETROLEUM HOLDINGS LTD
CNQ – Canadian Natural Resources Limited
CNR – CANARGO ENERGY CORP
CNX – CNX Resources Corporation
COG – Cabot Oil & Gas Corporation
COHO1 – COHO ENERGY INC
COP – ConocoPhillips
COSE – COSTILLA ENERGY INC
CPE – Callon Petroleum Company
CPG – Crescent Point Energy Corporation
CRB – CARBON ENERGY CORP
CRBO – CARBON ENERGY CORP
CRC – California Resources Corporation
CRED1 – CREDO PETROLEUM CORP
CRK – Comstock Resources, Inc.
CRZO – Carrizo Oil & Gas, Inc.
CSPLF – CANADA SOUTHERN PETROLEUM LTD (Foreign)
CTESY – SINOTECH ENERGY LTD (Foreign)
CWEI – CLAYTON WILLIAMS ENERGY INC
CXG – CNX GAS CORP
CXO – Concho Resources Inc.
CXPO – CRIMSON EXPLORATION INC.
DHULZ – DORCHESTER HUGOTON LTD
DMLP – Dorchester Minerals, L.P.
DNR – Denbury Resources Inc.
DPTRQ – DELTA PETROLEUM CORP
DTVN – DTVN HOLDINGS INC
DVN – Devon Energy Corporation
DXIEF – DXI ENERGY INC. (Foreign)
DYOLF – DYNAMIC OIL & GAS INC (Foreign)
EAC1 – ENCORE ACQUISITION CO
ECA – Encana Corporation
ECR – Eclipse Resources Corporation
EEX1 – NEWFIELD EXPLORATION GULF COAST INC
EGC – ENERGY XXI GULF COAST, INC.
EGN – Energen Corporation
EGY – Vaalco Energy Inc
EGY1 – COLUMBUS ENERGY CORP
END – ENDEAVOUR INTERNATIONAL CORP
ENP – ENCORE ENERGY PARTNERS LP
EOG – EOG Resources, Inc.
EOXLQ – EMERALD OIL, INC.
EPE – EP Energy Corporation
EPEX – EDGE PETROLEUM CORP
EPL – EPL OIL & GAS, INC.
EPM – Evolution Petroleum Corporation, Inc.
EQT – EQT Corporation
EQTY – EQUITY OIL CO
EQU – EQUAL ENERGY LTD.
ERF – Enerplus Corporation
EROC – EAGLE ROCK ENERGY PARTNERS L P
ESCR – ESCALERA RESOURCES CO.
ESNJ – ESENJAY EXPLORATION INC
ESTE – Earthstone Energy, Inc.
EUENF – EURASIA ENERGY LTD (Foreign)
EVEP – EV Energy Partners, L.P.
EVG1 – EVERGREEN RESOURCES INC
EXCO – EXCO RESOURCES INC
FANG – Diamondback Energy, Inc.
FEEC – FAR EAST ENERGY CORP
FORC1 – FORCENERGY INC
FPET – FREEDOM PETROLEUM INC.
FPPC – FIELDPOINT PETROLEUM CORP
FPPP – FIELDPOINT PETROLEUM CORP
FST – FOREST OIL CORP
FXEN – FX ENERGY INC
GBLX – GB SCIENCES INC
GBR – New Concept Energy, Inc
GDP – Goodrich Petroleum Corporation
GDPM – GOODRICH PETROLEUM CORP
GEOI – GEORESOURCES INC
GEOKQ – GEOKINETICS INC
GLRI – GLORI ENERGY INC.
GMET – GEOMET, INC.
GMXRQ – GMX RESOURCES INC
GNE – Genie Energy Ltd.
GOTH – GOTHIC ENERGY CORP
GOU – GULF CANADA RESOURCES LTD
GPOR – Gulfport Energy Corporation
GPRK – Geopark Ltd
GRKA – GREKA ENERGY CORP
GST – Gastar Exploration Inc.
GSXN – GASCO ENERGY INC
GTE – Gran Tierra Energy Inc.
HDYN – HYPERDYNAMICS CORP
HECO1 – HALLWOOD ENERGY CORP
HENC – HOLLOMAN ENERGY CORP
HES – Hess Corporation
HK – Halcon Resources Corporation
HK1 – PETROHAWK ENERGY CORP
HNR – HARVEST NATURAL RESOURCES, INC.
HPGP – HILAND HOLDINGS GP, LP
HPR – HIGHPOINT RESOURCES CORP
HSE – HS RESOURCES INC
HTE – HARVEST ENERGY TRUST (Foreign)
HUSA – Houston American Energy Corporation
HUSKF – HUSKY ENERGY INC (Foreign)
HWL – HOWELL CORP
IOC – INTEROIL CORP (Foreign)
ISRL – Isramco, Inc.
IVANF – IVANHOE ENERGY INC
JAG – Jagged Peak Energy Inc.
JEDOF – JED OIL INC. (Foreign)
JONE – Jones Energy, Inc.
KCS – KCS ENERGY INC
KEST – KESTREL ENERGY INC
KMG1 – KERR MCGEE CORP
KNAN – CANAAN ENERGY CORP
KOS – Kosmos Energy Ltd.
KP – KEY PRODUCTION CO INC
KRP – Kimbell Royalty Partners
KWKAQ – QUICKSILVER RESOURCES INC
LD1 – LOUIS DREYFUS NATURAL GAS CORP
LGCY – Legacy Reserves LP
LINE – LINN ENERGY, LLC
LLEX – Lilis Energy, Inc.
LNCO – LINNCO, LLC
LONE – Lonestar Resources US Inc.
LPI – Laredo Petroleum, Inc.
LPRIQ – LONE PINE RESOURCES INC.
LRE – LRR ENERGY, L.P.
MCEP – Mid-Con Energy Partners, LP
MCF – Contango Oil & Gas Company
ME – MARINER ENERGY INC
MEMP – MEMORIAL PRODUCTION PARTNERS LP
MEXP – MILLER EXPLORATION CO
MHR – MAGNUM HUNTER RESOURCES CORP
MHR1 – MAGNUM HUNTER RESOURCES INC
MIGS – MCGLEN INTERNET GROUP INC
MILL – MILLER ENERGY RESOURCES, INC.
MLRC – MALLON RESOURCES CORP
MMR – MCMORAN EXPLORATION CO
MND – MITCHELL ENERGY & DEVELOPMENT CORP
MOIL – MAYNARD OIL CO
MPO – MIDSTATES PETROLEUM COMPANY, INC.
MPOYQ – MIDSTATES PETROLEUM COMPANY, INC.
MRD – MEMORIAL RESOURCE DEVELOPMENT CORP.
MRO – Marathon Oil Corporation
MSSN – MISSION RESOURCES CORP
MTDR – Matador Resources Company
MUR – Murphy Oil Corporation
MWE – MARKWEST ENERGY PARTNERS L P
MWP – MARKWEST HYDROCARBON INC
MXC – Mexco Energy Corporation
NAGP – NATIVE AMERICAN ENERGY GROUP, INC.
NBL – Noble Energy Inc.
NCEB – NORTH COAST ENERGY INC
NEV1 – NUEVO ENERGY CO
NEXT – NextDecade Corporation
NFG – National Fuel Gas Company
NFX – Newfield Exploration Company
NGAS – NGAS RESOURCES INC
NOG – Northern Oil and Gas, Inc.
NSLP – NEW SOURCE ENERGY PARTNERS L.P.
NXY – NEXEN INC (Foreign)
OAS – Oasis Petroleum Inc.
OBE – Obsidian Energy Ltd.
OEI – OCEAN ENERGY INC
OIL1 – TRITON ENERGY LTD
OXY – Occidental Petroleum Corporation
PARR – Par Pacific Holdings, Inc.
PDCE – PDC Energy, Inc.
PE – Parsley Energy, Inc.
PED – Pedevco Corp.
PED1 – PETROFLOW ENERGY LTD (Foreign)
PENG – PRIMA ENERGY CORP
PEX2 – PETROCORP INC
PGEI – PETROGLYPH ENERGY INC
PGH – Pengrowth Energy Corporation
PHX – Panhandle Royalty Company
PINN – PINNACLE GAS RESOURCES, INC.
PKZ – PETROKAZAKHSTAN INC (Foreign)
PLLL1 – PARALLEL PETROLEUM CORP
PN1 – PENNACO ENERGY INC
PNO – PANACO INC
PNRG – PrimeEnergy Corporation
POG – PATINA OIL & GAS CORP
PPP3 – POGO PRODUCING CO
PPX – PACIFIC ENERGY PARTNERS LP
PQ – PetroQuest Energy, Inc.
PRHR – PETROSHARE CORP.
PRZ – PRIZE ENERGY CORP
PSE – PIONEER SOUTHWEST ENERGY PARTNERS L.P.
PSJEF – PETSEC ENERGY LTD (Foreign)
PSTR – POSTROCK ENERGY CORP
PTF1 – PETROFUND ENERGY TRUST (Foreign)
PVAC – Penn Virginia Corporation
PVAH – PENN VIRGINIA CORP
PXD – Pioneer Natural Resources Company
PXP – PLAINS EXPLORATION & PRODUCTION CO
QELP – QUEST ENERGY PARTNERS, L.P.
QRE – QR ENERGY, LP
QUES1 – QUESTA OIL & GAS CO
REI – Ring Energy, Inc.
REM1 – REMINGTON OIL & GAS CORP
REN – RESOLUTE ENERGY CORP
REXX – Rex Energy Corporation
RGP – REGENCY ENERGY PARTNERS LP
RICE – RICE ENERGY INC.
ROSE – Rosehill Resources Inc.
ROSE1 – ROSETTA RESOURCES INC.
ROYL – ROYALE ENERGY FUNDS, INC
RRC – Range Resources Corporation
RSPP – RSP Permian, Inc.
RSRV – RESERVE PETROLEUM CO
SBOW – SilverBow Resorces, Inc.
SCU – STORM CAT ENERGY CORP
SD – SandRidge Energy, Inc.
SDOC – SANDRIDGE ENERGY INC
SFS1 – SANTA FE SNYDER CORP
SFYWQ – SWIFT ENERGY CO
SGY – Stone Energy Corporation
SKE – SPINNAKER EXPLORATION CO
SM – SM Energy Company
SN – Sanchez Energy Corporation
SNDE – Sundance Energy Australia Limited
SNKTY – INDEPENDENCE RESOURCES PLC
SNY1 – SNYDER OIL CORP
SOIGF – STRATA OIL & GAS, INC. (Foreign)
SOQDF – SONDE RESOURCES CORP. (Foreign)
SPND – SPINDLETOP OIL & GAS CO
SRCI – SRC Energy Inc.
STTX – STRATEX OIL & GAS HOLDINGS, INC.
STXX1 – SOUTH TEXAS OIL CO
SWN – Southwestern Energy Company
SYBB – SYNSORB BIOTECH INC (Foreign)
SYNM – SYNTROLEUM CORP
TAT – Transatlantic Petroleum Ltd
TBI1 – BROWN TOM INC
TDXT – 3DX TECHNOLOGIES INC
TELL – Tellurian Inc.
TENG – TRANS ENERGY INC
TEXP – TITAN EXPLORATION INC
TGA – TransGlobe Energy Corporation
TGC – Tengasco, Inc.
TLSMF – TALISMAN ENERGY INC (Foreign)
TMR – MERIDIAN RESOURCE CORP
TMYEQ – TRANSMERIDIAN EXPLORATION INC
TPLM – TRIANGLE PETROLEUM CORP
TPY – TIPPERARY CORP
TRCH – Torchlight Energy Resources, Inc.
TRGL – TOREADOR RESOURCES CORP
TRXO – T-REX OIL, INC.
TTEN – 3TEC ENERGY CORP
TVLYQ – TRI VALLEY CORP
TXCOQ – TXCO RESOURCES INC
TXLI – TEXOIL INC
TXSO – TEXAS SOUTH ENERGY, INC.
UCL – UNOCAL CORP
UMR – UNIMAR CO
UPL – Ultra Petroleum Corp.
UPLMQ – ULTRA PETROLEUM CORP
URX – UNITED REFINING ENERGY CORP
USEG – U.S. Energy Corp.
VENX – VENUS EXPLORATION INC
VET – Vermilion Energy Inc.
VNOM – Viper Energy Partners LP
VNRR – VANGUARD NATURAL RESOURCES, INC.
VPI – VINTAGE PETROLEUM INC
VQ – VENOCO, INC.
VRI – VASTAR RESOURCES INC
WLL – Whiting Petroleum Corporation
WPX – WPX Energy, Inc.
WRC – WESTPORT RESOURCES CORP
WRD – WildHorse Resource Development Corporation
WRES – WARREN RESOURCES INC
WTI – W&T Offshore, Inc.
WTXR – WEST TEXAS RESOURCES, INC.
WZR – WISER OIL CO
XCLT – XCL LTD
XCOOQ – EXCO RESOURCES INC
XEC – Cimarex Energy Co
XOG – Extraction Oil & Gas, Inc.
XTO – XTO ENERGY INC
YUMA – Yuma Energy, Inc.
ZAZA – ZAZA ENERGY CORP
ZN – Zion Oil & Gas Inc