Monster Beverage (MNST) had the highest return between 2003 and 2009 by a US stock in the S&P 500 (GSPC), returning 7,189.3%.

ASSET	YEARS	% RETURN
Monster Beverage (MNST)	2003-2009	7,189.29%
Deckers Outdoor (DECK)	2003-2009	2,972.92%
Apple (AAPL)	2003-2009	2,834.23%
Intuitive Surgical (ISRG)	2003-2009	2,367.03%
Booking (BKNG)	2003-2009	2,147.02%
Williams Companies (WMB)	2003-2009	1,499.84%
Akamai Technologies (AKAM)	2003-2009	1,307.78%
Axon Enterprise (AXON)	2003-2009	1,197.78%
F5 Networks (FFIV)	2003-2009	885.49%
Netflix (NFLX)	2003-2009	829.71%
CME (CME)	2003-2009	734.85%
Cognizant Technology Solutions Corp Class A (CTSH)	2003-2009	648.22%
Cummins (CMI)	2003-2009	638.6%
Amazon (AMZN)	2003-2009	600.99%
Altria (MO)	2003-2009	587.7%
Western Digital (WDC)	2003-2009	574.04%
Occidental Petroleum (OXY)	2003-2009	561.23%
BlackRock (BLK)	2003-2009	550.58%
Mastercard (MA)	2003-2009	542.76%
Steel Dynamics (STLD)	2003-2009	538.86%
Alphabet Inc Class A (GOOGL)	2003-2009	519.92%
Trimble (TRMB)	2003-2009	517.13%
Freeport-McMoran Copper & Gold (FCX)	2003-2009	504.58%
ON Semiconductor (ON)	2003-2009	504.11%
Align Technology (ALGN)	2003-2009	504.07%