Ovintiv (OVV) had the highest return between 1998 and 2008 by a US stock, returning 82,345,000%.

ASSET	YEARS	% RETURN
Ovintiv (OVV)	1998-2008	82,345,000%
QVC (QVCGA)	1998-2008	1,617,809.26%
India Globalization Capital (IGC)	1998-2008	1,616,566.67%
National Grid PLC ADR (NGG)	1998-2008	1,018,952.94%
MAG Silver (MAG)	1998-2008	878,340%
Houston American Energy (HUSA)	1998-2008	875,802.7%
Northern Oil & Gas (NOG)	1998-2008	852,476.92%
Know Labs (KNW)	1998-2008	534,224.43%
Ring Energy (REI)	1998-2008	146,566.67%
Ocean Power Technologies (OPTT)	1998-2008	74,233.33%
Perspective Therapeutics (CATX)	1998-2008	66,566.67%
Flexible Solutions International (FSI)	1998-2008	37,464.71%
Inuvo (INUV)	1998-2008	21,718.18%
Monster Beverage (MNST)	1998-2008	14,606.32%
Future Fintech (FTFT)	1998-2008	12,400%
NanoViricides (NNVC)	1998-2008	11,240%
Companhia Siderurgica Nacional ADR (SID)	1998-2008	8,069.43%
First Majestic Silver (AG)	1998-2008	7,843.56%
Gyre Therapeutics (GYRE)	1998-2008	7,448.45%
TherapeuticsMD (TXMD)	1998-2008	7,439.95%
Broadwind Energy (BWEN)	1998-2008	5,300.22%
Cognizant Technology Solutions Corp Class A (CTSH)	1998-2008	4,235.16%
Clean Harbors (CLH)	1998-2008	3,659.18%
Comtech Telecommunications (CMTL)	1998-2008	3,434.6%
Oramed Pharmaceuticals (ORMP)	1998-2008	3,134.28%