August 2025 Post-Election Year Seasonality of US Stock Indexes | Jeff Hirsch

August was the best DJIA month from 1901–1951, driven by agriculture and farming. Since 1988, however, it has become the worst month for DJIA and Russell 2000, and the second worst for S&P 500, NASDAQ, and Russell 1000, with average returns from +0.1% (NASDAQ) to –0.8% (DJIA). In August 2022, all major indexes fell over 4%; in 2023, losses exceeded 1.8%.

 

S&P 500 Post-Election Year Seasonal Pattern 1949-2023:

The S&P 500 rises steadily through July (blue STA Aggregate Cycle), 
peaks in early August, and pulls back into late August.
 

In post-election years, August has been even weaker: it’s the worst month for DJIA and Russell 1000, second worst for S&P 500, NASDAQ, and Russell 2000. Average losses range from –0.5% (Russell 2000) to –1.5% (DJIA), with more down Augusts than up across all indexes.

  

Reference:
Jeffrey A. Hirsch (July 25, 2025)  - August has been even weaker in post-election years.

 

 

Bank of America (BoA) analyst Paul Ciana highlights a historical S&P 500 trend since 1928, where the average trend tended to be frontloaded in July, peaking by the end of August and correcting lower in September. However, since 2015 a similar pattern with a mid-August peak developed while the median trend sees a late September peak.

The summer doldrums (late June to early September) typically see 20-40% lower trading volumes and variable volatility due to reduced market participation. Equities, bonds, commodities, and forex show subdued activity, with occasional volatility spikes due to low liquidity, and, in August 2025, possibly from more US tariffs craze and geopolitical events. 

 

Namzes, July 26, 2025.

  

The latest Commitment of Traders (COT) report (see above) reveals extreme positioning in VIX futures, with dealers (= banks, broker-dealers, intermediaries managing risk from client trades, not speculating) holding substantial long positions and CTAs (= hedge funds, who are on the other side of the trade, typically as speculators) showing their largest short exposure since November–December 2021—a pattern that has frequently preceded spikes in the VIX. This unusual market setup suggests potential volatility in early August 2025 and aligns with Namze's forecast of an 80-day cycle low in the VIX during that period. However, the resolution may be delayed due to the scale of the positioning. 

Namzes' 2025 S&P 500 Roadmap, December 27, 2024. 

 

 See also:

 David Hickson (July 14, 2025)  - S&P 500 and NASDAQ Headed for August Hurst Cycle Troughs.

TPR (February 4, 2025)  - The Most Consistent Seasonal Patterns in the S&P 500 | With Statistics.

 Robert Miner (January 8, 2025)  - S&P 500 Post-Election Year Patterns by Political Party.

Namzes (April 16, 2025)  - S&P 500 1965 vs 2025 Analogue = 89% Correlation.

Namzes (December 27, 2024) - 2025 Outlook on S&P 500, Cryptos, Currencies, Metals & Energy.

Seasonal Weakness in US Stocks During July Options Expirations | Jeff Hirsch

Since 1990, the Friday of July’s monthly options expiration week has shown a bearish bias for the DJIA, which declined 21 times in 35 years, with two unchanged years—1991 and 1995. On that Friday, the average loss is 0.36% for the DJIA and 0.35% for the S&P 500.

 DJIA down 21 of 35 years (60%) on July expiration Friday, averaging a 0.36% loss.

 

The NASDAQ has declined in 23 of the past 35 years during this week, with an average loss of 0.46%, including seven consecutive down years most recently. This trend suggests a potential seasonal bearish pattern likely linked to options trading dynamics.

NASDAQ down 23 of 35 years (65%) on July expiration Friday, averaging a 0.46% loss.

For the full week, the DJIA posts the best performance, rising in 21 of 35 years with an average gain of 0.39%. However, the NASDAQ has been the weakest, declining in 21 years—including the last seven consecutively—with an average loss of 0.18%.

S&P 500 down 21 of 35 years (60%) on July expiration Friday, averaging a 0.35% loss.

The week following monthly options expiration also tends to be bearish for the NASDAQ, which averages a loss, compared to mild gains for the DJIA and S&P 500.

 

Reference:
Jeffrey A. Hirsch (July 11, 2025)  - July Monthly Options Expiration Week – NASDAQ Down 7 Straight.  

 

Positive Seasonality for Nasdaq (1990-2024) ends this week. SPX is similar.

 

Detrended Seasonality for S&P 500 (1990-2024). 

 

Namzes (July 12, 2025)  - S&P 500 Forecast Update. 

 

Namzes (July 12, 2025)  - S&P 500 2025  - 1965 Analogue Update.

 

 Nominal 20-Day Hurst Cycle in the S&P 500.

 

See also:

Krasi (July 12, 2025)  - S&P 500 Hurst Cycles Analysis. 

Branimir Vojcic (July 5, 2025)  - The NAAIM Index vs the S&P 500.
David Hickson (June 30, 2025)  - Hurst Cycles Analysis Update for the S&P 500. 

Jeff Hirsch (June 25, 2025)  - July 2025 Post-Election Seasonal Pattern of US Stock Indices.

July 2025 Post-Election Seasonal Pattern of US Stock Indices | Jeff Hirsch

July begins NASDAQ’s worst four months but is also the seventh best performing NASDAQ month since 1971, posting a 0.9% average gain. Lively trading often accompanies the first full month of summer as the beginning of the second half of the year tends to bring an inflow of new capital.

Typical Post-Election Year July: Early Strength, Beyond Mid-Month Mixed.

This creates a bullish beginning, middle, and a mixed/flat final third. On average, over the last 21 years, nearly all of July’s gains have occurred in the first 13 trading days. Once a bullish day, the last trading day of July has had a modestly bearish bias over the last 21 years. In post-election years since 1950, July has exhibited a similar pattern to the recent 21-year period with some modest weakness just ahead of Independence Day.

Reference:
Jeffrey A. Hirsch (June 25, 2025)  - Typical July Trading: Strength Early, Beyond Mid-Month Mixed. 

 

Data from the Stock Trader’s Almanac are showing that since 1950, July has been the strongest month for both the DJIA and the S&P 500 in post-election years. Specifically, the DJIA has averaged a 2.1% gain, ranking first among months, with 15 positive years and only 3 negative years. The S&P 500 mirrors this, averaging a 2.2% gain, also ranking first, with 12 positive and 6 negative years. 

 

This covers 19 presidential election cycles from 1952 to 2020, providing a robust dataset spanning post-war booms, recessions, and technological shifts. A notable statistic is the 10-year streak of positive July returns for both indices from 2015 to 2024, suggesting a recent intensification of this seasonal pattern. The table below summarizes the performance:  

 

2025: Spring Low – Summer High – Fall Low – Bull into Year-End.

 Post-Election Years with 1st-Term Democrats +14%, 1st-Term Republicans +1%.

 

 S&P 500 Post-Election Year Seasonal Pattern 1949-2023.

 

S&P 500 Average Annual Cycle (2014-2024). 

 

% of Months in Which SPY Closed higher Than It Opened From 2015 to 2024. 

 

BraVoCycles (June 25, 2025)  - Long-term SPX Elliott Wave count.

 

See also:

Cory Mitchell (May 30, 2025)  - Best and Worst Months for the Stock Market – Seasonal Patterns.
Paul Ciana (May 17, 2025)  - S&P 500 on Track for Strongest May-to-July Gains in Years.

TPR (February 4, 2025)  - The Most Consistent Seasonal Patterns in the S&P 500 | With Statistics. 

June 2025 Post-Election Seasonal Pattern of US Stock Indices | Jeff Hirsch

In post-election years since 1950, early June strength has been notably stronger for NASDAQ and Russell 2000, while DJIA and S&P 500 have typically struggled.  

 

 Typical June Pattern of the S&P 500 in a Post-Election Year:

Early Strength: Starts with a slight uptrend, weaker than NASDAQ (2.5%) or Russell 2000. 

Mid-Month Dip: Drops around days 10-15 due to profit-taking or uncertainty. 

Late-Month Recovery: Rallies late June to a neutral or positive close, less than small-cap/tech gains.

 

So far in June 2025, Russell 2000 ($IWM) has gained 3.8% and NASDAQ ($QQQ) 2.5%, setting the stage for a typical brisk mid-month drop followed by a month-end rally, often led by technology and small caps.

Reference:
Jeffrey A. Hirsch (June 10, 2025) - Small Caps Rocking Typical Post-Election June.

 

 S&P 500 Post-Election Year Seasonal Pattern 1949-2023.

April 2025 Seasonal Pattern of US Stock Indices | Jeff Hirsch

The first half of April used to outperform the second half, but since 1994 that has no longer been the case. The effect of April 15 Tax Deadline appears to be diminished with bullish days present throughout April. Traders and investors appear to be more focused on first quarter earnings and guidance throughout the entire month of April.

 Since 1950, April has shown steady market gains from the first trading day to the last, with occasional

minor dips. In post-election years, April starts weaker, but the dip is brief and shallow.

As you can see in the above chart of the recent 21-year market performance in April and post-election years since 1950, April has historically been nearly perfect with gains steadily building from the first trading day to the last with only the occasional and minor blip along the way. In post-election years, April does tend to open on the soft side, but the early dip has historically been shallow and brief.

 

In post-election years, April remains a top performing month ranking second best for DJIA and S&P 500, and third best for NASDAQ. Average gains since 1950 for DJIA and S&P 500 are comparable to all years, but notably improve for NASDAQ, Russell 1000 and Russell 2000. NASDAQ’s three post-election year April declines were in 1973, 1993 and 2005.

Reference:
Jeffrey A. Hirsch (March 27, 2025) - Taxes Schmaxes – April Strong Open to Close – Deadline Impact Fades.
Jeffrey A. Hirsch (March 25, 2025) - April is the second-best month for S&P 500 and DJIA.

 

Other Bullish Scenarios:

 

Robert Miner: Spring Low – Summer High – Fall Low – Bull into Year-End.

 Post-Election Years with 1st-Term Democrats +14%, 1st-Term Republicans +1%. 

Bullish from March 23 Low to April 27 High (2004-2023).

Average move higher: +4.78% (during 18 out of 20 years, up = 90%).

 

Bearish Scenarios:

 

 Next 20-day Hurst cycle due to bottom around FOMC on April 9 (Wed)(± 1 TD).

 

 

 FINRA Margin Debt vs S&P 500 Real Values, suggesting risk as of late March 2025. 

 

 

Potential opportunity shorting the S&P 500 in
the next major downturn over the coming weeks.

Trigger Trades, March 27, 2025.

 

See also:

TPR (March 7, 2025) - The Three Week Cycle, Quarterly Shift, and IPDA Data Ranges.

TPR (March 11, 2025) - S&P 500 Premium and Discount Levels in the Current 18-Month Cycle. 

TPR (March 23, 2025) - Different Projection Techniques for the S&P 500 Transitioning into Q2.

 TPR (December 10, 2024) - 2025 in J.M. Funk’s '56-Year Cycle of Prosperity and Depression'.

 

The Kondratieff Cycle and Its Subdivisions.

March 2025 Seasonal Pattern of US Stock Indices | Jeff Hirsch

Rather turbulent in recent years, with wild fluctuations and large gains and losses, March has been experiencing some significant end-of-quarter hits. In post-election years since 1950, March has tended to open strongly, and this strength has generally persisted until shortly after mid-month (as indicated by the dashed arrow below). At that point, the major indexes lost momentum and closed out March with some choppy trading. In contrast, over the past 21 years, March has trended lower through mid-month before rallying in the second half.

 March strong early-month, mid-month losses with choppy trading,
often rally after Quadruple Witching (March 21), likely sharp decline the week after.

March is a particularly busy month. It marks the end of the first quarter, which brings with it quarterly Quadruple Witching (Friday, March 21) and an abundance of portfolio maneuvers from Wall Street. In recent years, March Quad-Witching Weeks have been quite bullish, but the week after has been nearly the exact opposite, with the DJIA down 22 of the last 37 years—and often down sharply.

 

 

Reference:
Jeffrey A. Hirsch (February 26, 2025) - Beware The Ides of March.

 

 Updated $SPX July-Oct 2023 correction overlay:
1 week bounce then down into end of March final low. — Namzes, February 28, 2025.

See also:

Robert Miner (2025) - S&P 500 Post-Election Year Patterns by Political Parties. 

 The Most Consistent Seasonal Patterns in the S&P 500 | With Statistics.