Going back to 1928, today's gain of 4.33% to wrap up November was the S&P 500's fourth best end to a month in the index's history. The best end to a month actually came on September 30th, 2008 when the S&P gained 5.42%. The second and third best ends to a month came in 1929 and 1931 respectively.
Below we highlight all gains of 2% or more on the last trading day of the month for the S&P 500 throughout its history. There have been 30 months since 1928 in which the S&P gained more than 2% on the last trading day. As shown, the average change on the day after these 30 days (which is always the first trading day of the next month) has been 0.02% with gains 16 times and losses 14 times, so it's pretty much been a toss up. However, the day after the three strongest ends to the month on record has been negative every time.
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