Universal Insurance (UVE) had the highest return between 1991 and 1997 by a US stock, returning 327,100%.

ASSET	YEARS	% RETURN
Universal Insurance (UVE)	1991-1997	327,100%
Heritage Global (HGBL)	1991-1997	39,100%
Suncor Energy (SU)	1991-1997	21,155.14%
ProPhase Labs (PRPH)	1991-1997	11,456.35%
Jack Henry & Associates (JKHY)	1991-1997	8,289.02%
Cisco Systems (CSCO)	1991-1997	6,018.12%
Hubbell (HUBB)	1991-1997	5,432.68%
Argan (AGX)	1991-1997	5,200.89%
Semtech (SMTC)	1991-1997	3,812.48%
Charles Schwab (SCHW)	1991-1997	3,800.41%
Gencor Industries (GENC)	1991-1997	3,405.9%
National HealthCare (NHC)	1991-1997	2,988.81%
Educational Development (EDUC)	1991-1997	2,969.37%
Firefly Neuroscience (AIFF)	1991-1997	2,864.7%
Magna International (MGA)	1991-1997	2,833.97%
LCI Industries (LCII)	1991-1997	2,812.84%
Robert Half International (RHI)	1991-1997	2,530.23%
Alto Ingredients (ALTO)	1991-1997	2,286.36%
Aegon NV ADR (AEG)	1991-1997	2,255.54%
Coca-Cola Consolidated (COKE)	1991-1997	2,231.65%
Great Southern Bancorp (GSBC)	1991-1997	2,227.93%
Paychex (PAYX)	1991-1997	2,149.23%
Applied Materials (AMAT)	1991-1997	2,142.25%
PTC (PTC)	1991-1997	2,129.37%
Cullen/Frost Bankers (CFR)	1991-1997	2,093.41%