Perspective Therapeutics (CATX) had the highest return between 1997 and 2007 by a US stock, returning 669,900%.

ASSET	YEARS	% RETURN
Perspective Therapeutics (CATX)	1997-2007	669,900%
United Community Banks (UCB)	1997-2007	455,160.98%
Monster Beverage (MNST)	1997-2007	27,038.24%
Frontline (FRO)	1997-2007	26,118.31%
Know Labs (KNW)	1997-2007	18,983.97%
Broadwind Energy (BWEN)	1997-2007	17,060.69%
Companhia Siderurgica Nacional ADR (SID)	1997-2007	15,692.42%
Denison Mines (DNN)	1997-2007	12,129.59%
Smith & Wesson Brands (SWBI)	1997-2007	12,092.31%
Companhia Energetica de Minas Gerais CEMIG Pref ADR (CIG)	1997-2007	11,910.53%
Versus Systems Inc. (VS)	1997-2007	10,020%
Cognizant Technology Solutions Corp Class A (CTSH)	1997-2007	8,044.97%
Comtech Telecommunications (CMTL)	1997-2007	6,528.44%
Gerdau SA ADR (GGB)	1997-2007	6,426.43%
Houston American Energy (HUSA)	1997-2007	6,000.38%
BlackBerry (BB)	1997-2007	5,792.44%
Site Centers (SITC)	1997-2007	5,434.74%
BRF SA ADR (BRFS)	1997-2007	5,334.9%
American Eagle Outfitters (AEO)	1997-2007	5,134.35%
Forward Air (FWRD)	1997-2007	4,970.18%
TherapeuticsMD (TXMD)	1997-2007	4,950.01%
Gildan Activewear (GIL)	1997-2007	4,604.44%
Best Buy (BBY)	1997-2007	4,523.74%
Daktronics (DAKT)	1997-2007	4,315.89%
Team (TISI)	1997-2007	4,235.41%