Advanced Micro Devices (AMD) had the highest return in April 2000 by a US stock in the S&P 500 (GSPC), returning 47.7%.

ASSET	MONTH	% RETURN
Advanced Micro Devices (AMD)	April 2000	47.68%
Quest Diagnostics (DGX)	April 2000	45.47%
Laboratory Corporation of America (LH)	April 2000	41.79%
Teradyne (TER)	April 2000	34.15%
CoreSite Realty (COR)	April 2000	33.89%
Northrop Grumman (NOC)	April 2000	33.88%
CH Robinson Worldwide (CHRW)	April 2000	31.58%
BlackRock (BLK)	April 2000	28.39%
Boston Scientific (BSX)	April 2000	26.57%
Entergy (ETR)	April 2000	25.62%
Amphenol (APH)	April 2000	25.31%
Pinnacle West Capital (PNW)	April 2000	24.82%
Lockheed Martin (LMT)	April 2000	23.99%
Republic Services (RSG)	April 2000	23.73%
Frank's International (FI)	April 2000	23.53%
FirstEnergy (FE)	April 2000	23.33%
PG&E (PCG)	April 2000	23.14%
American Electric Power (AEP)	April 2000	22.85%
Norfolk Southern (NSC)	April 2000	22.61%
Fastenal (FAST)	April 2000	22.39%
Pool (POOL)	April 2000	21.19%
JB Hunt Transport Services (JBHT)	April 2000	21.1%
Public Service Enterprise (PEG)	April 2000	20.84%
Consolidated Edison (ED)	April 2000	20.82%
MGM Resorts International (MGM)	April 2000	20.41%