|
ABP
|
Abraxas Petroleum Corp.
|
|
AE
|
Adams Resources & Energy, Inc.
|
|
HES
|
Amerada Hess
|
|
APC
|
Anadarko Petroleum Corporation
|
|
APA
|
Apache Corporation
|
|
AREX
|
Approach Resources
|
|
ARD
|
Arena Resources, Inc.
|
|
ASPN
|
Aspen Exploration Corporation
|
|
ATLS
|
Atlas MLP
|
|
ATPG
|
ATP Oil & Gas Corporation
|
|
BOGA
|
Baseline Oil & Gas
|
|
BSIC
|
Basic Earth Science
|
|
BRY
|
Berry Petroleum Company
|
|
BBG
|
Bill Barrett Corporation
|
|
BDCO
|
Blue Dolphin Energy Company
|
|
BDE
|
Bois d'Arc Energy, Inc.
|
|
BP
|
BP
|
|
BBEP
|
Breitburn MLP
|
|
BEXP
|
Brigham Exploration Co.
|
|
COG
|
Cabot Oil & Gas Corporation
|
|
CPE
|
Callon Petroleum Company
|
|
CFW
|
Cano Petroleum
|
|
CGYN
|
Capco Energy, Inc.
|
|
CRZO
|
Carrizo Oil & Gas, Inc.
|
|
LNG
|
Cheniere Energy, Inc.
|
|
CHK
|
Chesapeake Energy Corporation
|
|
CVX
|
Chevron Texaco
|
|
XEC
|
Cimarex Energy Co.
|
|
CWEI
|
Clayton Williams Energy
|
|
CRK
|
Comstock Resources, Inc.
|
|
CXO
|
Concho Resources
|
|
COP
|
Conoco Phillips
|
|
CEP
|
Constellation Energy Partners
|
|
MCF
|
Contango Oil & Gas Co.
|
|
CRED
|
CREDO Petroleum Corporation
|
|
CXPO
|
Crimson Exploration
|
|
QBC
|
Cubic Energy
|
|
DLOV
|
Daleco Resources Corporation
|
|
DPTR
|
Delta Petroleum Corp.
|
|
DNR
|
Denbury Resources Inc.
|
|
DVN
|
Devon Energy Corporation
|
|
D
|
Dominion Resources
|
|
DBLE
|
Double Eagle Petroleum
|
|
DNE
|
Dune Energy
|
|
EROC
|
Eagle Rock Energy
|
|
EPEX
|
Edge Petroleum Corp.
|
|
EP
|
El Paso
|
|
EPRC
|
Empiric Energy, Inc.
|
|
ECA
|
EnCana Corporation
|
|
EAC
|
Encore Acquisition Co.
|
|
ENP
|
Encore Energy Partners
|
|
EGN
|
Energen
|
|
EPL
|
Energy Partners, Ltd.
|
|
EOG
|
EOG Resources, Inc.
|
|
EVEP
|
EV Energy Partners
|
|
XCO
|
Exco Resources Inc.
|
|
TXCO
|
Exploration Company of Delaware, Inc.
|
|
XOM
|
Exxon Mobil
|
|
FST
|
Forest Oil Corporation
|
|
GASE
|
Gasco Energy, Inc.
|
|
GEOI
|
GeoResources, Inc.
|
|
GMXR
|
GMX Resources Inc.
|
|
GDP
|
Goodrich Petroleum Corp.
|
|
GPOR
|
Gulfport Energy Corp.
|
|
GULF
|
GulfWest Energy Inc.
|
|
HPCO
|
Hallador Petroleum Co.
|
|
HEC
|
Harken Energy Corporation
|
|
THX
|
Houston Exploration
|
|
IVAN
|
Ivanhoe Energy Inc.
|
|
KCS
|
KCS Energy, Inc.
|
|
KMG
|
Kerr-McGee Corporation
|
|
KEST
|
Kestrel Energy, Inc.
|
|
KMI
|
Kinder Morgan
|
|
LGCY
|
Legacy Reserves
|
|
LINE
|
Linn Energy LLC
|
|
MHR
|
Magnum Hunter Resources
|
|
MRO
|
Marathon Oil Corporation
|
|
ME
|
Mariner Energy
|
|
MWP
|
MarkWest Hydrocarbon, Inc
|
|
MXES
|
Matrix Energy Services Company
|
|
MMR
|
McMoRan Exploration Co.
|
|
MDU
|
MDU Resources (Fidelity E&P)
|
|
TMR
|
Meridian Resource Corp.
|
|
MXC
|
Mexco Energy Corporation
|
|
MUR
|
Murphy Oil Corp.
|
|
NEGI
|
National Energy Group Inc
|
|
NESS
|
Ness Energy International
|
|
NFX
|
Newfield Exploration Co.
|
|
NXY
|
Nexen Inc.
|
|
NGAS
|
NGAS
|
|
NBL
|
Noble Energy, Inc.
|
|
OXY
|
Occidental Petroleum Corporation
|
|
PHX
|
Panhandle Royalty Company
|
|
PLLL
|
Parallel Petroleum Corp.
|
|
PVA
|
Penn Virginia Corporation
|
|
PGL
|
Peoples Energy
|
|
HAWK
|
Petrohawk
|
|
PETD
|
Petroleum Development Corporation
|
|
PQ
|
PetroQuest Energy, Inc.
|
|
PXD
|
Pioneer Natural Resources
|
|
PIOL
|
Pioneer Oil And Gas
|
|
PSE
|
Pioneer Southwest Energy Partners
|
|
PXP
|
Plains Exploration & Production
|
|
PLX
|
Plains Resources Inc.
|
|
PPP
|
Pogo Producing Company
|
|
PNRG
|
PrimeEnergy Corporation
|
|
PYR
|
PYR Energy
|
|
PYOL
|
Pyramid Oil Company
|
|
QRCP
|
Quest Resource
|
|
STR
|
Questar
|
|
KWK
|
Quicksilver Resources Inc
|
|
RAME
|
RAM Energy
|
|
RRC
|
Range Resources Corp.
|
|
REM
|
Remington Oil & Gas Corp.
|
|
REXX
|
Rex Energy
|
|
ROSE
|
Rosetta Resources
|
|
RD
|
Royal Dutch Shell
|
|
ROYL
|
Royale Energy, Inc.
|
|
SD
|
Sandridge Energy
|
|
STOSY
|
Santos Limited
|
|
SNRN
|
Sonoran Energy, Inc.
|
|
SWN
|
Southwestern Energy
|
|
SKE
|
Spinnaker Exploration
|
|
SM
|
St. Mary Land & Exploration
|
|
SFY
|
Swift Energy Company
|
|
TLM
|
Talisman Energy Inc.
|
|
TGC
|
Tengasco, Inc.
|
|
TPY
|
Tipperary Corporation
|
|
TIV
|
Tri-Valley Corporation
|
|
USEG
|
U.S. Energy Corp.
|
|
UPL
|
Ultra Petroleum Corp.
|
|
UNT
|
Unit Corporation
|
|
VNR
|
Vanguard Natural Resources
|
|
VXEN
|
VTEX Energy, Inc.
|
|
WTI
|
W&T Offshore, Inc.
|
|
WRES
|
Warren Resources, Inc.
|
|
WGR
|
Western Gas Resources Inc
|
|
WRC
|
Westport Resources
|
|
WLL
|
Whiting Petroleum Corporation
|
|
WMB
|
Williams
|
|
WOC
|
Wilshire Enterprises, Inc
|
|
WZR
|
Wiser Oil Company
|
|
XTO
|
XTO Energy Inc.
|