Polaris Industries (PII) had the highest return between 1988 and 1989 by a US stock, returning 4,929.7%.

ASSET	YEARS	% RETURN
Polaris Industries (PII)	1988-1989	4,929.67%
Aegon NV ADR (AEG)	1988-1989	1,392.06%
Sono-Tek (SOTK)	1988-1989	1,112.9%
Dmc Global (BOOM)	1988-1989	744.51%
Powell Industries (POWL)	1988-1989	681.86%
Utah Medical Products (UTMD)	1988-1989	600%
Telefonaktiebolaget LM Ericsson B ADR (ERIC)	1988-1989	584.03%
Birks (BGI)	1988-1989	555.44%
Devon Energy (DVN)	1988-1989	468.4%
Weatherford International (WFRD)	1988-1989	466.67%
Hurco Companies (HURC)	1988-1989	411.65%
Barnwell Industries (BRN)	1988-1989	374.26%
Badger Meter (BMI)	1988-1989	371.57%
HF Sinclair (DINO)	1988-1989	366.44%
Lumen Technologies (LUMN)	1988-1989	310.18%
Nike (NKE)	1988-1989	296.92%
Graham (GHM)	1988-1989	293.65%
Oceaneering International (OII)	1988-1989	290.93%
Suncor Energy (SU)	1988-1989	287.72%
RCM Technologies (RCMT)	1988-1989	286.05%
Johnson Controls International (JCI)	1988-1989	284.39%
Telephone and Data Systems (TDS)	1988-1989	279.05%
Valmont Industries (VMI)	1988-1989	269.29%
Kirby (KEX)	1988-1989	253.13%
Gentex (GNTX)	1988-1989	251.81%