Fonar (FONR) had the highest return in April 1982 by a US stock, returning 44.7%.

ASSET	MONTH	% RETURN
Fonar (FONR)	April 1982	44.74%
PrimeEnergy (PNRG)	April 1982	36.96%
Taylor Devices (TAYD)	April 1982	36.36%
Kinross Gold (KGC)	April 1982	30.77%
Honda Motor Co Ltd ADR (HMC)	April 1982	29.81%
Carlisle Companies (CSL)	April 1982	28.12%
Aflac (AFL)	April 1982	26.08%
Universal Health Services (UHS)	April 1982	24.03%
CACI International (CACI)	April 1982	22.91%
Ducommun (DCO)	April 1982	21.95%
Service Corporation International (SCI)	April 1982	21.61%
GlaxoSmithKline PLC ADR (GSK)	April 1982	21.33%
Medtronic (MDT)	April 1982	21.27%
General Dynamics (GD)	April 1982	21.26%
NACCO Industries (NC)	April 1982	21.1%
Corning (GLW)	April 1982	20.77%
Trinity Industries (TRN)	April 1982	20.28%
Toyota Motor Corporation ADR (TM)	April 1982	20%
Watsco (WSO.B)	April 1982	19.54%
McCormick (MKC)	April 1982	18.6%
Commercial Metals (CMC)	April 1982	17.91%
Farmer Bros (FARM)	April 1982	17.7%
Quaker Chemical (KWR)	April 1982	17.46%
Matson (MATX)	April 1982	16.82%
SEI Investments (SEIC)	April 1982	16.19%