International Business Machines (IBM) had its best month between 1969 and 1970 in September 1970, returning 10%.

ASSET	MONTH	% RETURN
International Business Machines (IBM)	January 1969	-5.95%
International Business Machines (IBM)	February 1969	-0.97%
International Business Machines (IBM)	March 1969	7.03%
International Business Machines (IBM)	April 1969	4.46%
International Business Machines (IBM)	May 1969	-2.75%
International Business Machines (IBM)	June 1969	5.88%
International Business Machines (IBM)	July 1969	-3.92%
International Business Machines (IBM)	August 1969	5.83%
International Business Machines (IBM)	September 1969	0.07%
International Business Machines (IBM)	October 1969	4.42%
International Business Machines (IBM)	November 1969	-0.83%
International Business Machines (IBM)	December 1969	1.67%
International Business Machines (IBM)	January 1970	-8.04%
International Business Machines (IBM)	February 1970	0.97%
International Business Machines (IBM)	March 1970	-0.51%
International Business Machines (IBM)	April 1970	-11.97%
International Business Machines (IBM)	May 1970	-6.71%
International Business Machines (IBM)	June 1970	-10.07%
International Business Machines (IBM)	July 1970	1.38%
International Business Machines (IBM)	August 1970	5.71%
International Business Machines (IBM)	September 1970	9.99%
International Business Machines (IBM)	October 1970	1.18%
International Business Machines (IBM)	November 1970	4.51%
International Business Machines (IBM)	December 1970	3.42%