Castellum (CTM) had the highest return in June 2016 by a US stock, returning 581.8%.

ASSET	MONTH	% RETURN
Castellum (CTM)	June 2016	581.82%
Reliance Global (RELI)	June 2016	354.55%
Vista Gold (VGZ)	June 2016	167.41%
Electrovaya Inc Common Shares (ELVA)	June 2016	137.89%
New Concept Energy (GBR)	June 2016	124.23%
Nocera (NCRA)	June 2016	119.51%
Talos Energy (TALO)	June 2016	115.74%
Obsidian Energy (OBE)	June 2016	113.85%
Netcapital (NCPL)	June 2016	100%
ProMIS Neurosciences (PMN)	June 2016	100%
Contango ORE (CTGO)	June 2016	91.44%
Lantheus (LNTH)	June 2016	88.21%
Centrais Electricas Brasileiras (EBR)	June 2016	87.62%
EXACT Sciences (EXAS)	June 2016	80.68%
JX Luxventure (JXJT)	June 2016	80.5%
JX Luxventure (JXG)	June 2016	80%
International Tower Hill Mines (THM)	June 2016	76.35%
374Water Inc Common Stock (SCWO)	June 2016	72.73%
American Battery Technology Company Common Stock (ABAT)	June 2016	72.56%
McEwen Mining (MUX)	June 2016	70.35%
Eastside Distilling (EAST)	June 2016	69.2%
TechPrecision Corporation Common stock (TPCS)	June 2016	68.67%
Gevo (GEVO)	June 2016	67.14%
Alphatec (ATEC)	June 2016	66.76%
TSS, Inc Common Stock (TSSI)	June 2016	66.48%