Dow Jones U.S. Oil & Gas Index ($DJUSEN),$DJUSEN
Anadarko Petroleum Corp.,APC
Apache Corp.,APA
Arena Resources Inc.,ARD
Atlas America Inc.,ATLS
Atwood Oceanics Inc.,ATW
BJ Services Co.,BJS
Baker Hughes Inc.,BHI
Berry Petroleum Co. Cl A,BRY
Bill Barrett Corp.,BBG
Bristow Group Inc.,BRS
Cabot Oil & Gas Corp.,COG
Cameron International Corp.,CAM
Carrizo Oil & Gas Inc.,CRZO
Chart Industries Inc.,GTLS
Chesapeake Energy Corp.,CHK
Chevron Corp.,CVX
Cimarex Energy Co.,XEC
Complete Production Services Inc.,CPX
Comstock Resources Inc.,CRK
Concho Resources Inc.,CXO
ConocoPhillips,COP
Continental Resources Inc.,CLR
Core Laboratories N.V.,CLB
Crosstex Energy Inc.,XTXI
Delta Petroleum Corp.,DPTR
Denbury Resources Inc.,DNR
Devon Energy Corp.,DVN
Diamond Offshore Drilling Inc.,DO
Dresser-Rand Group Inc.,DRC
Dril-Quip Inc.,DRQ
ENSCO International Inc.,ESV
EOG Resources Inc.,EOG
EXCO Resources Inc.,XCO
El Paso Corp.,EP
Encore Acquisition Co.,EAC
Evergreen Solar Inc.,ESLR
Exterran Holdings Inc.,EXH
Exxon Mobil Corp.,XOM
FMC Technologies Inc.,FTI
First Solar Inc.,FSLR
Forest Oil Corp.,FST
Frontier Oil Corp.,FTO
Global Industries Ltd.,GLBL
Goodrich Petroleum Corp.,GDP
Halliburton Co.,HAL
Helix Energy Solutions Group Inc.,HLX
Helmerich & Payne Inc.,HP
Hercules Offshore Inc.,HERO
Hess Corp.,HES
Holly Corp.,HOC
ION Geophysical Corp.,IO
Key Energy Services Inc.,KEG
Marathon Oil Corp.,MRO
Mariner Energy Inc.,ME
Murphy Oil Corp.,MUR
Nabors Industries Ltd.,NBR
National Oilwell Varco Inc.,NOV
Newfield Exploration Co.,NFX
Newpark Resources Inc.,NR
Noble Corp.,NE
Noble Energy Inc.,NBL
OGE Energy Corp.,OGE
Occidental Petroleum Corp.,OXY
Oceaneering International Inc.,OII
Oil States International Inc.,OIS
Parker Drilling Co.,PKD
Patterson-UTI Energy Inc.,PTEN
Penn Virginia Corp.,PVA
Petrohawk Energy Corp.,HK
Pioneer Natural Resources Co.,PXD
Plains Exploration & Production Co.,PXP
Pride International Inc.,PDE
Quicksilver Resources Inc.,KWK
Range Resources Corp.,RRC
Rowan Cos. Inc.,RDC
SEACOR Holding Inc.,CKH
SandRidge Energy Inc.,SD
Schlumberger Ltd.,SLB
Smith International Inc.,SII
Southwestern Energy Co.,SWN
St. Mary Land & Exploration Co.,SM
Stone Energy Corp.,SGY
SunPower Corp. Cl A,SPWRA
SunPower Corp. Cl B,SPWRB
Sunoco Inc.,SUN
Superior Energy Services Inc.,SPN
Swift Energy Co.,SFY
Tesoro Corp.,TSO
Tetra Technologies Inc.,TTI
Tidewater Inc.,TDW
Transocean Ltd.,RIG
Ultra Petroleum Corp.,UPL
Unit Corp.,UNT
Valero Energy Corp.,VLO
W&T Offshore Inc.,WTI
Weatherford International Ltd.,WFT
Whiting Petroleum Corp.,WLL
Williams Cos.,WMB
XTO Energy Inc.,XTO