spx monthly returns all time

SPX (SPXC) had its best month since March 17, 1980 in May 1980, returning 22.8%.

ASSET MONTH % RETURN
SPX (SPXC)
March 1980
-25.29%
SPX (SPXC)
April 1980
-5.46%
SPX (SPXC)
May 1980
22.79%
SPX (SPXC)
June 1980
9.88%
SPX (SPXC)
July 1980
9.35%
SPX (SPXC)
August 1980
-2.67%
SPX (SPXC)
September 1980
-5.97%
SPX (SPXC)
October 1980
7.14%
SPX (SPXC)
November 1980
-1.64%
SPX (SPXC)
December 1980
8.99%
SPX (SPXC)
January 1981
-3.13%
SPX (SPXC)
February 1981
12.63%
SPX (SPXC)
March 1981
2.93%
SPX (SPXC)
April 1981
11.74%
SPX (SPXC)
May 1981
12.08%
SPX (SPXC)
June 1981
1.93%
SPX (SPXC)
July 1981
9.93%
SPX (SPXC)
August 1981
-9.38%
SPX (SPXC)
September 1981
-6.54%
SPX (SPXC)
October 1981
3.28%
SPX (SPXC)
November 1981
-4.75%
SPX (SPXC)
December 1981
4.88%
SPX (SPXC)
January 1982
0.39%
SPX (SPXC)
February 1982
-12.65%
SPX (SPXC)
March 1982
6.55%