Top Performance Oil & Gas Drilling & Exploration stocks 5/19/11

Below these are the Performing Oil & Gas Drilling & Exploration stocks of the day May 18, 2011.

Ticker Company Change
HDY Hyperdynamics Corporation 24.53%
NOG Northern Oil and Gas, Inc. 11.70%
PDC Pioneer Drilling Co. 8.66%
VOG Voyager Oil & Gas, Inc. 8.14%
KOG Kodiak Oil & Gas Corp. 7.85%
CEP Constellation Energy Partners LLC 7.79%
PKD Parker Drilling Co. 7.78%
CIE Cobalt International Energy, Inc. 7.65%
ECT Eca Marcellus Trust I 7.03%
TGC Tengasco Inc. 6.38%
OAS Oasis Petroleum Inc. 6.38%
BPZ BPZ Resources, Inc. 5.99%
DEJ Dejour Enterprises, Ltd. 5.91%
EVEP EV Energy Partners LP 5.81%
AREX Approach Resources, Inc. 5.75%
REXX Rex Energy Corporation 5.40%
MILL Miller Petroleum, Inc. 5.39%
UDRL Union Drilling, Inc. 5.27%
GIFI Gulf Island Fabrication Inc. 5.11%
VNR Vanguard Natural Resources, LLC 5.00%
WTI W&T Offshore Inc. 4.95%
SDRL SeaDrill Limited 4.88%
PTEN Patterson-UTI Energy Inc. 4.85%
SD SandRidge Energy, Inc. 4.59%
RDC Rowan Companies Inc. 4.56%
VQ Venoco, Inc. 4.48%
GGR GeoGlobal Resources Inc. 4.44%
GST Gastar Exploration, Ltd. 4.31%
HERO Hercules Offshore, Inc. 4.24%
HP Helmerich & Payne Inc. 3.93%
NBR Nabors Industries Ltd. 3.72%
ESV Ensco plc 3.71%
NEP China North East Petroleum Holdings Limited 3.64%
CLR Continental Resources Inc. 3.51%
CVE Cenovus Energy Inc. 3.47%
ATW Atwood Oceanics, Inc. 3.47%
MWE MarkWest Energy Partners LP 3.28%
TAT TransAtlantic Petroleum Ltd. 3.27%
CTE SinoTech Energy Limited 3.26%
PGH Pengrowth Energy Corporation 3.16%
PSE Pioneer Southwest Energy Partners L.P. 3.14%
LNG Cheniere Energy, Inc. 3.05%
SSN Samson Oil & Gas Limited 3.05%
WLL Whiting Petroleum Corp. 3.02%
DO Diamond Offshore Drilling Inc. 2.97%
MHR Magnum Hunter Resources Corp. 2.86%
KEG Key Energy Services Inc. 2.64%
ENP Encore Energy Partners LP 2.61%
UNT Unit Corp. 2.51%
TIV Tri-Valley Corp. 2.50%
CMLP Crestwood Midstream Partners LP 2.47%
BBEP Breitburn Energy Partners L.P. 2.40%
CRT Cross Timbers Royalty Trust 2.38%
PDE Pride International Inc. 2.23%
LGCY Legacy Reserves Lp 2.02%
CXO Concho Resources, Inc. 2.00%
NE Noble Corp. 1.99%
ERF Enerplus Corporation 1.93%
VTG Vantage Drilling Company 1.63%
EQU Equal Energy Ltd. 1.63%
MVO MV Oil Trust 1.62%
STO Statoil ASA 1.56%
AAV Advantage Oil & Gas Ltd. 1.40%
HGT Hugoton Royalty Trust 1.35%
PWE Penn West Petroleum Ltd. 1.30%
GMET Geomet, Inc. 0.79%
FXEN FX Energy Inc. 0.64%
BBG Bill Barrett Corp. 0.46%
PSTR PostRock Energy Corporation 0.36%
BRNC Bronco Drilling Co. Inc. 0.18%
RIG Transocean Ltd. 0.18%
QEP QEP Resources, Inc. 0.12%
PINN Pinnacle Gas Resources, Inc. 0.00%
GLRP Glen Rose Petroleum Corp. 0.00%
PBR Petroleo Brasileiro -0.03%
PBR-A Petroleo Brasileiro -0.16%
GBR New Concept Energy, Inc. -1.74%
RAM RAM Energy Resources, Inc. -2.55%
SOQ Sonde Resources Corp. -2.64%
WHX Whiting USA Trust I -4.93%
QBC Cubic Energy Inc. -5.17%