what is the most performance mega cap stock between 1977 and 1978

Walmart (WMT) had the highest return between 1977 and 1978 by a mega-cap US stock, returning 50.9%.

ASSET YEARS % RETURN
Walmart (WMT)
1977-1978
50.91%
Coca-Cola (KO)
1977-1978
20.59%
International Business Machines (IBM)
1977-1978
17.03%
Chevron (CVX)
1977-1978
16.09%
Eli Lilly and (LLY)
1977-1978
8.03%
Merck (MRK)
1977-1978
7.39%
Procter & Gamble (PG)
1977-1978
1.38%
Wells Fargo (WFC)
1977-1978
-3.67%
Johnson & Johnson (JNJ)
1977-1978
-4.06%
GE Aerospace (GE)
1977-1978
-6.28%
Mega-cap stocks are treated as having a market cap of $200B+.