best performance mega stock each month 1991

Cisco Systems (CSCO) had the best month in 1991 by a mega-cap US stock in December 1991, returning 35.2%.

ASSET MONTH % RETURN
Cisco Systems (CSCO)
December 1991
35.22%
Cisco Systems (CSCO)
April 1991
33.73%
Cisco Systems (CSCO)
January 1991
33.7%
UnitedHealth (UNH)
March 1991
30.84%
Microsoft (MSFT)
January 1991
30.81%
Apple (AAPL)
January 1991
29.78%
JPMorgan Chase (JPM)
February 1991
24.53%
Wells Fargo (WFC)
December 1991
24.25%
UnitedHealth (UNH)
December 1991
24.16%
Oracle (ORCL)
August 1991
23.28%
Walmart (WMT)
December 1991
22.13%
Cisco Systems (CSCO)
July 1991
21.69%
UnitedHealth (UNH)
October 1991
21.33%
UnitedHealth (UNH)
May 1991
21.06%
Bank of America (BAC)
January 1991
20.97%
Abbott Laboratories (ABT)
December 1991
20.83%
JPMorgan Chase (JPM)
January 1991
20.7%
GE Aerospace (GE)
December 1991
20.54%
American Express (AXP)
March 1991
20.31%
Johnson & Johnson (JNJ)
December 1991
20.21%
UnitedHealth (UNH)
January 1991
20.2%
JPMorgan Chase (JPM)
July 1991
19.88%
Apple (AAPL)
March 1991
19.29%
Bank of America (BAC)
December 1991
19.12%
Oracle (ORCL)
September 1991
18.84%
Mega-cap stocks are treated as having a market cap of $200B+.