Castellum (CTM) had the highest return in Q4 2013 by a US stock, returning 534,553.5%.

ASSET	QUARTER	% RETURN
Castellum (CTM)	Q4 2013	534,553.47%
INVO Fertility (IVF)	Q4 2013	558.54%
Enveric Biosciences (ENVB)	Q4 2013	385.39%
Astrotech (ASTC)	Q4 2013	277.33%
Fonar (FONR)	Q4 2013	265.06%
Tenax Therapeutics (TENX)	Q4 2013	216.9%
Electromed (ELMD)	Q4 2013	214.81%
Oramed Pharmaceuticals (ORMP)	Q4 2013	151.71%
SRx Health Solutions (SRXH)	Q4 2013	150%
Camtek (CAMT)	Q4 2013	136.83%
Sphere 3D (ANY)	Q4 2013	133.15%
Precision Optics Corporation, Inc Common stock (POCI)	Q4 2013	125%
Coda Octopus (CODA)	Q4 2013	117.59%
BOS Better Online Solutions (BOSC)	Q4 2013	115.28%
Sellas Life Sciences (SLS)	Q4 2013	111.06%
Perdoceo Education (PRDO)	Q4 2013	108.78%
Universal Insurance (UVE)	Q4 2013	108.16%
Plug Power (PLUG)	Q4 2013	106.67%
ANI Pharmaceuticals (ANIP)	Q4 2013	102.4%
Corcept Therapeutics (CORT)	Q4 2013	100.63%
Inotiv (NOTV)	Q4 2013	99.19%
AerCap (AER)	Q4 2013	96.47%
MiMedx (MDXG)	Q4 2013	94.22%
Cosmos Health (COSM)	Q4 2013	93.65%
TechPrecision Corporation Common stock (TPCS)	Q4 2013	93.33%