Axon Enterprise (AXON) had the highest return in January 2004 by a US stock in the S&P 500 (GSPC), returning 61%.

ASSET	MONTH	% RETURN
Axon Enterprise (AXON)	January 2004	61.03%
Juniper Networks (JNPR)	January 2004	53.27%
F5 Networks (FFIV)	January 2004	35.19%
Incyte (INCY)	January 2004	31.76%
L3Harris Technologies (LHX)	January 2004	28.61%
Netflix (NFLX)	January 2004	27.67%
Agilent Technologies (A)	January 2004	26.02%
Align Technology (ALGN)	January 2004	23.95%
Corning (GLW)	January 2004	22.7%
Royal Caribbean Cruises (RCL)	January 2004	21.13%
Skyworks Solutions (SWKS)	January 2004	20.7%
CME (CME)	January 2004	20.58%
Revvity (RVTY)	January 2004	20.17%
Fair Isaac (FICO)	January 2004	19.7%
Akamai Technologies (AKAM)	January 2004	19.35%
Micron Technology (MU)	January 2004	17.42%
Cognizant Technology Solutions Corp Class A (CTSH)	January 2004	17.26%
Charles River Laboratories (CRL)	January 2004	17.12%
Tyson Foods (TSN)	January 2004	16.78%
Quest Diagnostics (DGX)	January 2004	16.49%
Motorola Solutions (MSI)	January 2004	16.35%
Biogen (BIIB)	January 2004	16.32%
Capital One Financial (COF)	January 2004	15.9%
Halliburton (HAL)	January 2004	15.87%
Edwards Lifesciences (EW)	January 2004	15.75%