worst performing stocks in the s and p 500 in the year 1980

Marsh & McLennan Companies (MMC) had the worst year in 1980 by a US stock in the S&P 500 (GSPC) in 1980, returning -50.9%.

ASSETYEAR% RETURN
Marsh & McLennan Companies (MMC)
1980
-50.9%
Ford Motor (F)
1980
-31.38%
Snap-On (SNA)
1980
-26.05%
Aflac (AFL)
1980
-20.96%
Viatris (VTRS)
1980
-16.66%
NiSource (NI)
1980
-16.36%
Ecolab (ECL)
1980
-13.62%
EnergySolutions (ES)
1980
-12.33%
Nike (NKE)
1980
-8.57%
Danaher (DHR)
1980
-8.17%
Hormel Foods (HRL)
1980
-7.55%
WW Grainger (GWW)
1980
-7.07%
US Bancorp (USB)
1980
-5.81%
Travelers Companies (TRV)
1980
-4.91%
McCormick (MKC)
1980
-3.92%
PPL (PPL)
1980
-3.81%
Lockheed Martin (LMT)
1980
-2.9%
Aon (AON)
1980
-2.76%
Procter & Gamble (PG)
1980
-2.5%
Cummins (CMI)
1980
-2.42%
Evergy (EVRG)
1980
-2.17%
Bank of New York Mellon (BK)
1980
-2.11%
Clorox (CLX)
1980
-1.22%
Truist Financial (TFC)
1980
-1.18%
Bank of America (BAC)
1980
-0.92%