Soligenix (SNGX) had the highest return between 1988 and 1990 by a US stock, returning 444,344.4%.

ASSET	YEARS	% RETURN
Soligenix (SNGX)	1988-1990	444,344.44%
Polaris Industries (PII)	1988-1990	6,502.2%
Aegon NV ADR (AEG)	1988-1990	4,523.81%
Powell Industries (POWL)	1988-1990	1,445.55%
ClearOne (CLRO)	1988-1990	1,400%
Telefonaktiebolaget LM Ericsson B ADR (ERIC)	1988-1990	734.58%
Utah Medical Products (UTMD)	1988-1990	717.3%
UnitedHealth (UNH)	1988-1990	542.82%
Nike (NKE)	1988-1990	507.67%
Nabors Industries (NBR)	1988-1990	500%
Devon Energy (DVN)	1988-1990	384.19%
Home Depot (HD)	1988-1990	368.83%
Cardinal Health (CAH)	1988-1990	337.78%
Quantum (QMCO)	1988-1990	329.82%
Oceaneering International (OII)	1988-1990	327.3%
HF Sinclair (DINO)	1988-1990	315.35%
Barnwell Industries (BRN)	1988-1990	311.66%
Johnson Controls International (JCI)	1988-1990	307.31%
Cracker Barrel Old Country Store (CBRL)	1988-1990	299.07%
Amgen (AMGN)	1988-1990	298.39%
Team (TISI)	1988-1990	296.6%
Cadence Design Systems (CDNS)	1988-1990	291.38%
Altria (MO)	1988-1990	286.11%
Glacier Bancorp (GBCI)	1988-1990	281.63%
Newell Brands (NWL)	1988-1990	275.33%