Madrigal Pharmaceuticals (MDGL) had the highest return in April 2016 by a US stock when the return was < 66.7%, returning 66.7%.

ASSET	MONTH	% RETURN
Madrigal Pharmaceuticals (MDGL)	April 2016	66.67%
SM Energy (SM)	April 2016	66.6%
Euroseas (ESEA)	April 2016	66.13%
Teck Resources Ltd Class B (TECK)	April 2016	65.54%
OrganiGram (OGI)	April 2016	65.53%
Valhi (VHI)	April 2016	64.17%
Urban One (UONE)	April 2016	63.11%
Hecla Mining (HL)	April 2016	61.42%
Helix Energy Solutions (HLX)	April 2016	60.41%
Singularity Future Technology (SGLY)	April 2016	60.12%
Ryerson (RYI)	April 2016	60%
Vital Energy (VTLE)	April 2016	59.84%
CorMedix (CRMD)	April 2016	59.54%
NFT (MI)	April 2016	59.27%
IAMGold (IAG)	April 2016	58.88%
Data Storage (DTST)	April 2016	55.96%
Flexible Solutions International (FSI)	April 2016	55.18%
Galiano Gold (GAU)	April 2016	54.76%
NovaBay Pharmaceuticals (NBY)	April 2016	53.4%
Capricor Therapeutics (CAPR)	April 2016	53.31%
Aldeyra (ALDX)	April 2016	52.91%
Dmc Global (BOOM)	April 2016	51.95%
Safe Bulkers (SB)	April 2016	51.24%
Oncolytics Biotech (ONCY)	April 2016	50.45%
Lithium Argentina (LAR)	April 2016	49.99%