Empire Petroleum (EP) had the lowest return in August 2014 by a US stock in the Energy Sector, returning -33.3%.

ASSET	MONTH	% RETURN
Empire Petroleum (EP)	August 2014	-33.33%
Uranium Energy (UEC)	August 2014	-25.71%
Houston American Energy (HUSA)	August 2014	-17.24%
Frontline (FRO)	August 2014	-14.58%
Vital Energy (VTLE)	August 2014	-12.9%
Expro (XPRO)	August 2014	-12.31%
Kolibri Global Energy Inc Common stock (KGEI)	August 2014	-10%
New Concept Energy (GBR)	August 2014	-9.09%
Centrus Energy (LEU)	August 2014	-9.07%
Transportadora de Gas del Sur SA ADR (TGS)	August 2014	-8.94%
StealthGas (GASS)	August 2014	-8.42%
Talos Energy (TALO)	August 2014	-7.48%
Evolution Petroleum (EPM)	August 2014	-5.73%
YPF Sociedad Anonima (YPF)	August 2014	-5.6%
North American Construction (NOA)	August 2014	-5.1%
Natural Resource Partners (NRP)	August 2014	-4.85%
Par Pacific (PARR)	August 2014	-4.74%
Riley Exploration Permian (REPX)	August 2014	-4.55%
Bristow (VTOL)	August 2014	-4.4%
Natural Gas Services (NGS)	August 2014	-4.29%
Mexco Energy (MXC)	August 2014	-4.12%
Hallador Energy (HNRG)	August 2014	-3.93%
Ur Energy (URG)	August 2014	-3.6%
Aemetis (AMTX)	August 2014	-3.47%
Dmc Global (BOOM)	August 2014	-2.97%