Perspective Therapeutics (CATX) had the highest return between 2003 and 2005 by a US stock, returning 2,416,566.7%.

ASSET	YEARS	% RETURN
Perspective Therapeutics (CATX)	2003-2005	2,416,566.67%
National Grid PLC ADR (NGG)	2003-2005	545,016%
NanoViricides (NNVC)	2003-2005	12,360%
Dawson Geophysical (DWSN)	2003-2005	10,762.56%
TherapeuticsMD (TXMD)	2003-2005	7,400.01%
Cheniere Energy (LNG)	2003-2005	5,626.37%
Protalix Biotherapeutics (PLX)	2003-2005	3,763.64%
Monster Beverage (MNST)	2003-2005	3,640.09%
Broadwind Energy (BWEN)	2003-2005	3,260.13%
Gulf Resources (GURE)	2003-2005	2,900%
Inuvo (INUV)	2003-2005	2,837.5%
Silicom (SILC)	2003-2005	2,778.81%
Oramed Pharmaceuticals (ORMP)	2003-2005	2,470.84%
BRF SA ADR (BRFS)	2003-2005	2,447.82%
Dmc Global (BOOM)	2003-2005	2,294.14%
Flotek Industries (FTK)	2003-2005	2,094.12%
Axon Enterprise (AXON)	2003-2005	1,962.25%
Denison Mines (DNN)	2003-2005	1,960.03%
Hurco Companies (HURC)	2003-2005	1,875.67%
Insteel Industries (IIIN)	2003-2005	1,763.91%
BioCryst Pharmaceuticals (BCRX)	2003-2005	1,575%
DXP Enterprises (DXPE)	2003-2005	1,569.9%
DSS (DSS)	2003-2005	1,564.42%
Williams Companies (WMB)	2003-2005	1,534.01%
U-Haul (UHAL)	2003-2005	1,520.76%