Delcath Systems (DCTH) had the highest return in May 2018 by a US stock in the Nasdaq Composite (IXIC), returning 49,265.1%.

ASSET	MONTH	% RETURN
Delcath Systems (DCTH)	May 2018	49,265.08%
Alarum Technologies (ALAR)	May 2018	18,339.56%
Kaival Brands Innovations (KAVL)	May 2018	5,925.74%
Applied Digital (APLD)	May 2018	1,258.33%
Integrated Media Technology (IMTE)	May 2018	544.56%
Blink Charging (BLNK)	May 2018	389.93%
Ryvyl (RVYL)	May 2018	319.9%
Evolus (EOLS)	May 2018	257.66%
Turtle Beach (TBCH)	May 2018	210.71%
SenesTech (SNES)	May 2018	204.55%
Envirotech Vehicles (EVTV)	May 2018	146.77%
Viking Therapeutics (VKTX)	May 2018	141.89%
Madrigal Pharmaceuticals (MDGL)	May 2018	134.08%
Boxlight Corp Class A (BOXL)	May 2018	110.7%
Golden Matrix (GMGI)	May 2018	100%
Clean Energy Fuels (CLNE)	May 2018	95.06%
Carver Bancorp (CARV)	May 2018	94.13%
Marker Therapeutics (MRKR)	May 2018	86.28%
Intrusion (INTZ)	May 2018	84.15%
Tandem Diabetes Care (TNDM)	May 2018	83.4%
STAAR Surgical (STAA)	May 2018	83.08%
Eledon Pharmaceuticals (ELDN)	May 2018	80.57%
Cryoport (CYRX)	May 2018	80.17%
VivoPower International (VVPR)	May 2018	80%
Euro Tech (CLWT)	May 2018	74.97%