Aegon NV ADR (AEG) had the highest return between 1988 and 1989 by a US stock, returning 1,392.3%.

ASSET	YEARS	% RETURN
Aegon NV ADR (AEG)	1988-1989	1,392.31%
Sono-Tek (SOTK)	1988-1989	1,112.9%
Dmc Global (BOOM)	1988-1989	744.51%
Powell Industries (POWL)	1988-1989	681.74%
Utah Medical Products (UTMD)	1988-1989	599.98%
Telefonaktiebolaget LM Ericsson B ADR (ERIC)	1988-1989	584.03%
Birks (BGI)	1988-1989	555.44%
Devon Energy (DVN)	1988-1989	468.42%
Weatherford International (WFRD)	1988-1989	462.67%
Hurco Companies (HURC)	1988-1989	411.65%
Barnwell Industries (BRN)	1988-1989	374.26%
Badger Meter (BMI)	1988-1989	371.71%
HF Sinclair (DINO)	1988-1989	360.66%
Lumen Technologies (LUMN)	1988-1989	310.18%
Nike (NKE)	1988-1989	296.72%
Graham (GHM)	1988-1989	293.65%
Oceaneering International (OII)	1988-1989	290.93%
RCM Technologies (RCMT)	1988-1989	286.05%
Suncor Energy (SU)	1988-1989	285.48%
Johnson Controls International (JCI)	1988-1989	284.55%
Telephone and Data Systems (TDS)	1988-1989	279.03%
Valmont Industries (VMI)	1988-1989	269.29%
Kirby (KEX)	1988-1989	253.13%
Gentex (GNTX)	1988-1989	251.81%
Cadence Design Systems (CDNS)	1988-1989	248.35%