s and p 500 monthly returns for sept 1966 to 1971

The S&P 500 (GSPC) had its best month between September 1, 1966 and December 31, 1971 in December 1971, returning 8.6%.

ASSETMONTH% RETURN
the S&P 500 (GSPC)
September 1966
-0.7%
the S&P 500 (GSPC)
October 1966
4.75%
the S&P 500 (GSPC)
November 1966
0.31%
the S&P 500 (GSPC)
December 1966
-0.15%
the S&P 500 (GSPC)
January 1967
7.82%
the S&P 500 (GSPC)
February 1967
0.2%
the S&P 500 (GSPC)
March 1967
3.94%
the S&P 500 (GSPC)
April 1967
4.22%
the S&P 500 (GSPC)
May 1967
-5.24%
the S&P 500 (GSPC)
June 1967
1.75%
the S&P 500 (GSPC)
July 1967
4.53%
the S&P 500 (GSPC)
August 1967
-1.17%
the S&P 500 (GSPC)
September 1967
3.28%
the S&P 500 (GSPC)
October 1967
-3.53%
the S&P 500 (GSPC)
November 1967
0.75%
the S&P 500 (GSPC)
December 1967
2.63%
the S&P 500 (GSPC)
January 1968
-4.38%
the S&P 500 (GSPC)
February 1968
-3.12%
the S&P 500 (GSPC)
March 1968
0.94%
the S&P 500 (GSPC)
April 1968
6.97%
the S&P 500 (GSPC)
May 1968
1.25%
the S&P 500 (GSPC)
June 1968
0.87%
the S&P 500 (GSPC)
July 1968
-1.85%
the S&P 500 (GSPC)
August 1968
1.15%
the S&P 500 (GSPC)
September 1968
3.85%