After the S&P 500 logged its 9th worst Oct. on record, losing 6.9%, it has bounced back 2.6% month-to-date through Nov. 9, 2018. Though the monthly returns for the eight Novembers following the historically bad Octobers were only positive twice – in 1978 (President Jimmy Carter midterm year) and 1933 – the fact there was a midterm election this year may help the chance of a solid rally if history repeats itself. Historically, the S&P 500 has been positive in most periods after the midterm elections.
In the months of Nov. and Dec. during historical midterm election years, the S&P 500 gained 14 of 22 times in Nov. and in 15 of 22 times in Dec. with a combined 2-month gain in 17 of the 22 midterm election year-ends. In percentage terms, the S&P 500 gained in 64% of midterm election Nov. months and 68% of the following month that when combined into a 2-month return resulted in gains 77% of the time. Also, the magnitude of the average gains in the 2-month period was 6.1%, more than the magnitude of the average loss of 4.1%.