spx monthly returns all time

SPX (SPXC) had its best month since March 17, 1980 in May 1980, returning 23.8%.

ASSET MONTH % RETURN
SPX (SPXC)
March 1980
-25.29%
SPX (SPXC)
April 1980
-4.74%
SPX (SPXC)
May 1980
23.77%
SPX (SPXC)
June 1980
9.86%
SPX (SPXC)
July 1980
11.97%
SPX (SPXC)
August 1980
-2.67%
SPX (SPXC)
September 1980
-4.42%
SPX (SPXC)
October 1980
4.04%
SPX (SPXC)
November 1980
-0.54%
SPX (SPXC)
December 1980
8.37%
SPX (SPXC)
January 1981
-4.12%
SPX (SPXC)
February 1981
10.21%
SPX (SPXC)
March 1981
2.93%
SPX (SPXC)
April 1981
12.79%
SPX (SPXC)
May 1981
10.18%
SPX (SPXC)
June 1981
1.54%
SPX (SPXC)
July 1981
9.09%
SPX (SPXC)
August 1981
-9.38%
SPX (SPXC)
September 1981
-6.54%
SPX (SPXC)
October 1981
4.11%
SPX (SPXC)
November 1981
-4.74%
SPX (SPXC)
December 1981
7.06%
SPX (SPXC)
January 1982
0.01%
SPX (SPXC)
February 1982
-16.4%
SPX (SPXC)
March 1982
6.55%