Caledonia Mining (CMCL) had the highest return between 1980 and 1984 by a US stock, returning 233,511.5%.

ASSET	YEARS	% RETURN
Caledonia Mining (CMCL)	1980-1984	233,511.54%
Home Depot (HD)	1980-1984	1,198.25%
PulteGroup (PHM)	1980-1984	1,147.1%
Jefferies Financial (JEF)	1980-1984	1,050.71%
Service Corporation International (SCI)	1980-1984	1,004.53%
Walmart (WMT)	1980-1984	847.56%
Altria (MO)	1980-1984	650%
Espey Mfg & Electronics (ESP)	1980-1984	605.92%
Essential Utilities (WTRG)	1980-1984	559.32%
Standard Motor Products (SMP)	1980-1984	467.88%
Flowers Foods (FLO)	1980-1984	451.02%
Robert Half International (RHI)	1980-1984	433.33%
Gap (GAP)	1980-1984	415.93%
GlaxoSmithKline PLC ADR (GSK)	1980-1984	405.08%
New York Times (NYT)	1980-1984	400.54%
Allient (ALNT)	1980-1984	386.83%
ConAgra Foods (CAG)	1980-1984	386.61%
Southwest Airlines (LUV)	1980-1984	376.72%
Sysco (SYY)	1980-1984	356.88%
Alaska Air (ALK)	1980-1984	352.37%
Watsco (WSO.B)	1980-1984	343.57%
Berkshire Hathaway (BRK.A)	1980-1984	339.66%
Associated Banc (ASB)	1980-1984	337.56%
Tutor Perini (TPC)	1980-1984	335.29%
Oxford Industries (OXM)	1980-1984	335.02%