Zivo Bioscience (ZIVO) had the highest return between 1999 and 2003 by a US stock, returning 139,636,263.6%.

ASSET	YEARS	% RETURN
Zivo Bioscience (ZIVO)	1999-2003	139,636,263.64%
Booking (BKNG)	1999-2003	5,870,500%
Hirequest (HQI)	1999-2003	5,793,250%
Interlink Electronics (LINK)	1999-2003	138,566.67%
ImmunoPrecise Antibodies (HYFT)	1999-2003	122,042.86%
Inseego (INSG)	1999-2003	99,733.33%
Flexible Solutions International (FSI)	1999-2003	81,262.75%
DeFi Technologies (DEFT)	1999-2003	32,900%
Americas Silver (USAS)	1999-2003	8,347.37%
China Yuchai International (CYD)	1999-2003	7,113.58%
Gladstone Capital (GLAD)	1999-2003	4,354.28%
Xcel Brands (XELB)	1999-2003	3,400%
Quantum (QMCO)	1999-2003	2,628.32%
Empire Petroleum (EP)	1999-2003	2,076.2%
Tandy Leather Factory (TLF)	1999-2003	1,837.74%
KVH Industries (KVHI)	1999-2003	1,817.98%
Companhia Siderurgica Nacional ADR (SID)	1999-2003	1,755.47%
FTI Consulting (FCN)	1999-2003	1,487.42%
American Vanguard (AVD)	1999-2003	1,478.12%
SunOpta (STKL)	1999-2003	1,376.8%
SSR Mining (SSRM)	1999-2003	1,222.64%
Future Fintech (FTFT)	1999-2003	1,200%
John B Sanfilippo & Son (JBSS)	1999-2003	1,100.93%
Axon Enterprise (AXON)	1999-2003	1,076.79%
Ovintiv (OVV)	1999-2003	1,010.03%