JK Election Cycle Months

Key Points:

• Under the cover of volatility and seeming randomness, the stock market has tended to move in a cyclical fashion
• One of the primary cycles that seems to influence performance is the four-year (48-month) presidential election cycle
• Certain months within the 48-month cycle have seen more consistently favorable results
• This piece details my own way of analyzing the election cycle, using a pattern that I refer to as the JK Election Cycle Months

Updating JK Election Cycle Months

I wrote about this cycle originally in a piece dated April 5, 2022. I view the Election Cycle as 12 months per year across four separate years: Post-Election, Mid-Term, Pre-Election, and Election. The theory is that the stock market performs better (i.e., higher returns and more consistently profitable) during certain months within this 48-month cycle than during others. The full cycle appears in the table below.

The 18 months containing the word "Stocks" implies that we want to be in the stock market during these months. I generally refer to these as "favorable" months. I am essentially agnostic on the stock market during months that do not contain the word "Stocks." They should not be considered outright bearish (although long-term results during these months have been quite unfavorable, as we will detail momentarily). However, I typically refer to these as "unfavorable" months to differentiate them.

Note that April of 2026 is listed as a "favorable" month. Does this mean that stocks are guaranteed to trade higher this month? Not at all. For a better idea of what it does mean, read on.

Data used

For testing purposes, I use the monthly closing price for the Dow Jones Industrial Average from 12/31/1899 through 12/31/1919. Starting in January 1920 - and since - I use the monthly closing price for the S&P 500 Index. I then accumulate returns for those months marked "Stocks" separately from returns for all other months (i.e., those not marked "Stocks").

Performance Results: Favorable Months

The chart below displays the cumulative growth of $1 invested in the Dow from 1900 through 1919 and in the S&P 500 since 1920, only during the months labeled "Stocks" in the table above.

The chart below displays the same results above, but on a logarithmic scale to highlight the consistency of returns during favorable months.

Performance Results: Unfavorable Months

The chart below displays the cumulative growth of $1 invested in the Dow from 1900 through 1919 and in the S&P 500 since 1920, only during the months NOT labeled "Stocks" in the table above.

The chart below displays the same results above, but on a logarithmic scale to highlight the inconsistent nature of returns during these months.

For the record, from 12/31/1899 through 3/31/2022, the strategy:

• Gained +617,034% during "favorable" months, 
• Lost -75% during "unfavorable" months

While the results for "unfavorable" months are exceedingly negative overall, it is important to note that there have been many times when the stock market has rallied - at times substantially - during these supposedly "unfavorable" months.

Favorable months vs. Unfavorable months

Now, let's look at the results month by month, broken down by favorable and unfavorable months. The table below summarizes monthly results.

Probably the key things to note are:

• Favorable months showed a gain 66.5% of the time versus 53.4% for unfavorable months
• Favorable months showed an average monthly gain of +1.71% versus -0.08% for unfavorable months

Favorable versus Unfavorable months across each 4-year cycle

Now let's examine results across full 4-year cycles. For purposes of the test, we start on 12/31/1900, and 1901 is our first post-election year. We examine results from 1901 through 1904, then from 1905 through 1908, and so on, finishing with 2017 through 2020. All told, there have been 29 completed 4-year cycles.

The table below summarizes the results. The results listed under "Favorable Months" assume we hold long the Dow Jones Industrial Average ONLY during the 18 months labeled "Stocks" in the initial calendar table above across each full 4-year cycle. Likewise, the results listed under "Unfavorable Months" assume we hold long the Dow Jones Industrial Average ONLY during the 30 months NOT labeled "Stocks" in the initial calendar table above across each full 4-year cycle.

Key things to note:

• Investing only during the favorable months showed a 4-year gain 90% of the time (28 out of 31 cycles), while the unfavorable months showed a 4-year gain only 52% of the time
• Favorable months showed an average 4-year gain of 33.5% versus 0.8% for Unfavorable months
• The worst 4-year performance if stocks were held only during favorable months was -13.8% (1937-1940)
• The worst 4-year performance if stocks were held only during unfavorable months was -83.1 (1929-1932)

What the research tells us…

JK Election Cycle Months is not intended as a standalone trading model. Note that unfavorable months can and will routinely show gains during prolonged and sustained bull markets. As a result, buying and holding only during favorable months can underperform a simple buy-and-hold strategy for several years and by a significant amount.

The real purpose of the JK Election Cycle Months is to help give investors an "edge" by highlighting months that may have a higher probability of showing a gain. Consistent returns are a key ingredient in keeping investors disciplined and following their investment strategy long enough to achieve their long-term investment goals.