Wild Monthly Moves | Seeking Alpha

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Talk about a wild year. Check out the monthly moves in the S&P 500 so far this year. You probably thought it was volatile in Q1 when the S&P 500 had two declines of 5.3% and 3.1% followed by a gain of 3.6%. Q2 saw even bigger swings, with two declines of over 8% sandwiched between the month of May, when the S&P 500 was up by the smallest amount possible (0.01%). In Q3, the S&P 500 rallied 9.1% in July, but then gave back all of those gains and more in the subsequent two months. Q4 started off on a positive note with a gain of nearly 8%, but there are still two months left to give back all of those gains as well.

S&P 500 Monthly Change (%)

It’s not often that you see moves of such a large magnitude in the S&P 500, especially when they’re to both the downside and upside. Let’s start with the up moves. October was the second month this year that the S&P 500 rallied 7.5% or more, and while that may not sound like much, it is enough to be tied (with several other years) with the most in the post-WWII period. While there were three years with a higher frequency of 7.5%+ monthly gains in the 1930s (1933, 1935, and 1938), the only other years with as many 7.5%+ monthly moves in the post-WWII period were in 1948, 1954, 1982, 2001, 2009, and 2020.

S&P 500 Months With Gains of 7.5%+ By Year: 1928-2022

In terms of downside of 7.5%+ months, this year has been even more extreme. With three monthly declines of 7.5%+, 2022 is tied with only 1974 and 2008 for the most in any post-WWII year. The only years with more were all in the 1930s (1932, 1933, 1934, and 1938).

S&P 500 Months With Declines of 7.5%+ By Year: 1928-2022

Combining the two series together is where things really start to get interesting. With five monthly moves of at least 7.5% in either direction, there hasn’t been a single year in the post-WWII period with more – and there are still two months left to go. The only years with a higher number of 7.5% monthly moves were 1931, 1932, and 1932. While market-makers (are there any of those anymore?) may be loving the volatile trading environment of 2022, most investors probably can’t wait to wipe the slate clean in 2023.

S&P 500 Months With Gains or Declines of 7.5%+ By Year: 1928-2022

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Editor’s Note: The summary bullets for this article were chosen by Seeking Alpha editors.

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