Houston American Energy (HUSA) had the highest return between 1999 and 2002 by a US stock, returning 89,885%.

ASSET	YEARS	% RETURN
Houston American Energy (HUSA)	1999-2002	89,885.03%
Flexible Solutions International (FSI)	1999-2002	56,492.16%
ImmunoPrecise Antibodies (HYFT)	1999-2002	17,042.86%
Inseego (INSG)	1999-2002	16,066.67%
Insmed (INSM)	1999-2002	10,326.54%
Xcel Brands (XELB)	1999-2002	3,400%
Algorhythm (RIME)	1999-2002	2,447.17%
Quantum (QMCO)	1999-2002	2,234.81%
Versus Systems Inc. (VS)	1999-2002	1,900%
FTI Consulting (FCN)	1999-2002	1,718.14%
OPTIMIZERx (OPRX)	1999-2002	1,600%
Tandy Leather Factory (TLF)	1999-2002	1,253.17%
Suzano Papel e Celulose SA ADR (SUZ)	1999-2002	1,088.78%
Clean Harbors (CLH)	1999-2002	857.54%
China Yuchai International (CYD)	1999-2002	819.88%
Emerson Radio (MSN)	1999-2002	783.64%
Patterson-UTI Energy (PTEN)	1999-2002	631.4%
Royal Gold (RGLD)	1999-2002	590.84%
NVR (NVR)	1999-2002	584.67%
Laboratory Corporation of America (LH)	1999-2002	576.12%
Neurocrine Biosciences (NBIX)	1999-2002	552.29%
Lendway (LDWY)	1999-2002	544.31%
Quest Diagnostics (DGX)	1999-2002	541.13%
SSR Mining (SSRM)	1999-2002	534.06%
American Vanguard (AVD)	1999-2002	516.76%