For investors September is often a month to remember but for the wrong reasons. In fact, as shown in the LPL Chart of the Day, September has historically been one of the weakest months of the year for stocks.
“It’s widely known among investors that stocks tend not to do very well in September,” wrote LPL Chief Equity Strategist Jeffrey Buchbinder. “The combination of peak hawkishness from the Fed and the frustratingly slow pace at which inflation is cooling could make this a tough month for stocks.”
Meanwhile, earnings season isn’t available as a potential positive market catalyst, Europe’s energy crisis is worsening, and COVID-related lockdowns in China continue.
Here are some numbers to illustrate the consistency of this seasonal pattern:
- Since 1950, the S&P 500 has averaged a 0.54% decline in September, worst of all 12 months.
- Over the past 20 years, September is still the worst month for stocks with an average decline of 0.6%, but January and June are close behind with average losses of 0.28% and 0.38%, respectively.
- Over the past 10 years, September is the only month when the S&P 500 averages a loss (0.35%).
- During midterm years the S&P 500 has averaged a 0.35% decline in September, though that ranks ninth and is better than January (-0.66%), May (-0.66%), and June (-1.76%).
- Finally, from Bespoke Investment Group, these negative seasonal effects are exacerbated when the index is down on a year-to-date basis heading into the month. When the S&P has been down year to date through August (as it is this year), the index has averaged a decline of 3.4% in September.
This isn’t a very uplifting message but consider that October is right around the corner and that month kicks off a string of some of the best months of the year for stocks. In fact, during midterm election years, the best three months of the year have been October, November, December. Here’s hoping stocks can hang in there for the next 30 days and then stage a strong fourth quarter rally. Based on history, that seems like a reasonable expectation.
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