Axon Enterprise (AXON) had the highest return in Q3 2003 by a US stock in the S&P 500 (GSPC), returning 101.4%.

ASSET	QUARTER	% RETURN
Axon Enterprise (AXON)	Q3 2003	101.38%
Advanced Micro Devices (AMD)	Q3 2003	75.79%
Tyler Technologies (TYL)	Q3 2003	64.65%
Deckers Outdoor (DECK)	Q3 2003	58.74%
Seagate Technology (STX)	Q3 2003	54.4%
Cognizant Technology Solutions Corp Class A (CTSH)	Q3 2003	50.97%
ON Semiconductor (ON)	Q3 2003	48.15%
Genesis Healthcare (GEN)	Q3 2003	45.11%
Gartner (IT)	Q3 2003	42.56%
Tractor Supply (TSCO)	Q3 2003	38.57%
JB Hunt Transport Services (JBHT)	Q3 2003	38.21%
Monster Beverage (MNST)	Q3 2003	36.32%
Skyworks Solutions (SWKS)	Q3 2003	36.02%
Freeport-McMoran Copper & Gold (FCX)	Q3 2003	35.87%
Old Dominion Freight Line (ODFL)	Q3 2003	35.79%
Tyson Foods (TSN)	Q3 2003	33.8%
Amazon (AMZN)	Q3 2003	33.31%
Williams Companies (WMB)	Q3 2003	32.98%
Molina Healthcare (MOH)	Q3 2003	32.14%
Intel (INTC)	Q3 2003	31.97%
Netflix (NFLX)	Q3 2003	31.09%
Texas Instruments (TXN)	Q3 2003	29.69%
Motorola Solutions (MSI)	Q3 2003	29.67%
Booking (BKNG)	Q3 2003	29.58%
West Pharmaceutical Services (WST)	Q3 2003	29.3%