NetApp (NTAP) had the highest return between 1998 and 2000 by a US stock in the S&P 500 (GSPC), returning 1,367.2%.

ASSET	YEARS	% RETURN
NetApp (NTAP)	1998-2000	1,367.17%
VeriSign (VRSN)	1998-2000	1,347.55%
Qualcomm (QCOM)	1998-2000	1,241.74%
Biogen (BIIB)	1998-2000	1,002.9%
Laboratory Corporation of America (LH)	1998-2000	905.68%
Waters (WAT)	1998-2000	784.78%
Quest Diagnostics (DGX)	1998-2000	741.47%
Oracle (ORCL)	1998-2000	679.33%
Cognizant Technology Solutions Corp Class A (CTSH)	1998-2000	626.25%
Skyworks Solutions (SWKS)	1998-2000	583.06%
Adobe Systems (ADBE)	1998-2000	473.07%
NVR (NVR)	1998-2000	465.03%
ResMed (RMD)	1998-2000	464.62%
Revvity (RVTY)	1998-2000	430.01%
Copart (CPRT)	1998-2000	400%
Amgen (AMGN)	1998-2000	373.07%
Jack Henry & Associates (JKHY)	1998-2000	365.52%
Quanta Services (PWR)	1998-2000	338.92%
Vertex Pharmaceuticals (VRTX)	1998-2000	338.31%
Corning (GLW)	1998-2000	337.27%
Texas Instruments (TXN)	1998-2000	318.89%
Bio-Techne (TECH)	1998-2000	312.14%
Cisco Systems (CSCO)	1998-2000	305.29%
Regeneron Pharmaceuticals (REGN)	1998-2000	303.04%
Arthur J Gallagher (AJG)	1998-2000	300.19%