Quantum Computing (QUBT) had the highest return in Q2 2008 by a US stock, returning 1,400%.

ASSET	QUARTER	% RETURN
Quantum Computing (QUBT)	Q2 2008	1,400%
Mexco Energy (MXC)	Q2 2008	829.63%
TOMI Environmental Solutions (TOMZ)	Q2 2008	372.5%
Riley Exploration Permian (REPX)	Q2 2008	344.67%
Radcom (RDCM)	Q2 2008	277.7%
New Concept Energy (GBR)	Q2 2008	259.09%
Clean Energy Technologies, Inc Common Stock (CETY)	Q2 2008	233.33%
Epsilon Energy (EPSN)	Q2 2008	227.74%
Marker Therapeutics (MRKR)	Q2 2008	200%
ImmunoPrecise Antibodies (HYFT)	Q2 2008	197.67%
TherapeuticsMD (TXMD)	Q2 2008	197.66%
Dyadic International (DYAI)	Q2 2008	188.46%
Ammo (POWW)	Q2 2008	185.71%
Cemtrex (CETX)	Q2 2008	184.29%
Sanara Medtech (SMTI)	Q2 2008	182.14%
Houston American Energy (HUSA)	Q2 2008	164%
NanoViricides (NNVC)	Q2 2008	155.56%
SurgePays (SURG)	Q2 2008	145.16%
Northern Technologies (NTIC)	Q2 2008	142.78%
Gran Tierra Energy (GTE)	Q2 2008	140.79%
Largo Resources (LGO)	Q2 2008	134.43%
Abeona Therapeutics (ABEO)	Q2 2008	113.74%
LifeMD (LFMD)	Q2 2008	110%
Comstock Resources (CRK)	Q2 2008	108.93%
Graham (GHM)	Q2 2008	103.97%