best large cap monthly increases 1980s

AngloGold Ashanti (AU) had the best month in the 1980s by a large-cap US stock in May 1987, returning 250%.

ASSETMONTH% RETURN
AngloGold Ashanti (AU)
May 1987
250%
AngloGold Ashanti (AU)
December 1987
250%
Suncor Energy (SU)
May 1982
245.12%
BHP (BHP)
March 1984
200.28%
AngloGold Ashanti (AU)
October 1987
200%
Hormel Foods (HRL)
January 1985
145.92%
Aegon NV ADR (AEG)
May 1988
134.67%
Pinnacle West Capital (PNW)
December 1989
111.9%
Hormel Foods (HRL)
July 1985
110.08%
Hormel Foods (HRL)
April 1985
105.98%
Shell PLC ADR (SHEL)
January 1989
105.15%
Johnson Controls International (JCI)
March 1989
100%
Micron Technology (MU)
November 1985
97.24%
Nike (NKE)
March 1987
96.51%
Loews (L)
August 1985
88.5%
Nike (NKE)
August 1986
85.45%
Kinross Gold (KGC)
September 1982
81.82%
Micron Technology (MU)
June 1984
79.64%
Micron Technology (MU)
December 1987
78.78%
Royal Gold (RGLD)
October 1981
77.78%
Teva Pharma Industries Ltd ADR (TEVA)
July 1985
74.93%
Royal Gold (RGLD)
January 1987
73.91%
Unilever PLC ADR (UL)
April 1985
73.61%
Nike (NKE)
May 1986
73.42%
Suncor Energy (SU)
May 1989
71.14%
Large-cap stocks are treated as having a market cap of $10B+.