Empire Petroleum (EP) had the highest return in March 2014 by a US stock with a market cap of $100M+, returning 220%.

ASSET	MONTH	% RETURN
Empire Petroleum (EP)	March 2014	220%
Perspective Therapeutics (CATX)	March 2014	182.05%
Green Brick Partners (GRBK)	March 2014	151.73%
Celsius (CELH)	March 2014	97.7%
AudioEye (AEYE)	March 2014	89.26%
Iovance Biotherapeutics (IOVA)	March 2014	76.45%
Aemetis (AMTX)	March 2014	75.76%
374Water Inc Common Stock (SCWO)	March 2014	60%
Plug Power (PLUG)	March 2014	54.35%
Abeona Therapeutics (ABEO)	March 2014	48.65%
RadNet (RDNT)	March 2014	43.43%
Zynex (ZYXI)	March 2014	41.62%
Perma-Fix Environmental Svcs (PESI)	March 2014	40.23%
Climb Global Solutions (CLMB)	March 2014	38.84%
Fate Therapeutics (FATE)	March 2014	38.55%
TSS, Inc Common Stock (TSSI)	March 2014	37.03%
Orthofix Medical (OFIX)	March 2014	36.24%
POET Technologies (POET)	March 2014	35.87%
STAAR Surgical (STAA)	March 2014	34.96%
Avadel Pharmaceuticals (AVDL)	March 2014	34%
Lithium Americas (Argentina) (LAAC)	March 2014	33.87%
Corcept Therapeutics (CORT)	March 2014	33.74%
Anavex Life Sciences (AVXL)	March 2014	32.35%
Centrais Electricas Brasileiras (EBR)	March 2014	32.1%
ZEN Graphene Solutions (ZTEK)	March 2014	31.51%