Vista Gold (VGZ) had the highest return in May 2002 by a US stock, returning 200%.

ASSET	MONTH	% RETURN
Vista Gold (VGZ)	May 2002	200%
Yunhong Green CTI (YHGJ)	May 2002	186.67%
Flotek Industries (FTK)	May 2002	122.77%
Genesis Energy (GEL)	May 2002	118.89%
Evolution Petroleum (EPM)	May 2002	116.67%
Companhia Siderurgica Nacional ADR (SID)	May 2002	111.66%
SSR Mining (SSRM)	May 2002	109.83%
Zynex (ZYXI)	May 2002	100%
Imax (IMAX)	May 2002	93.24%
Air Industries (AIRI)	May 2002	84.62%
Mexco Energy (MXC)	May 2002	75%
Vaalco Energy (EGY)	May 2002	74.43%
Royal Gold (RGLD)	May 2002	74.12%
ImmunoPrecise Antibodies (HYFT)	May 2002	72%
LivePerson (LPSN)	May 2002	68.09%
Natural Alternatives International (NAII)	May 2002	67.49%
Kinross Gold (KGC)	May 2002	65.81%
InnSuites Hospitality Trust (IHT)	May 2002	65.46%
Plus Therapeutics (PSTV)	May 2002	65.45%
McEwen Mining (MUX)	May 2002	61.54%
Pure Cycle (PCYO)	May 2002	58.33%
Destination XL (DXLG)	May 2002	57.88%
BioLife Solutions (BLFS)	May 2002	54.17%
USANA Health Sciences (USNA)	May 2002	53.42%
Caledonia Mining (CMCL)	May 2002	53.33%