With summer unofficially over, historical data shows a consistent nine-year Tuesday-losing streak for major indexes immediately after the Labor Day holiday, fueling the possibility of a tenth decline on Sept. 8.
History of ‘Tuesday Weakness’
Market strategist Ryan Detrick noted that the immediate rebound after the long holiday weekend has been punishing in recent years. In a recent post on X, Detrick noted, “The Tuesday after Labor Day has been down nine years in a row for the Dow, S&P 500, and R2K.”
Detrick’s observation cites data from Jeffrey A. Hirsch, editor of the Stock Trader’s Almanac. Analyzing post-holiday market performance from 2005 through 2025, Hirsch observed that “Tuesday has historically been weak, while Wednesday has been considerably stronger.”
Across this timeline, the Dow Jones Industrial Average (DJIA) experienced an average decline of 0.28% on the Tuesday after Labor Day, mirroring a 0.28% drop for the Russell 2000. The Nasdaq fell by an average of 0.23%, and the S&P 500 lost 0.20%.
Furthermore, the DJIA and S&P 500 closed higher on this specific Tuesday only 33.3% of the time. A detailed look at the chart reveals that the last positive Tuesday following Labor Day for both the DJIA and S&P 500 occurred back in 2016. The 2024 Tuesday session was notably severe, with the NASDAQ plunging 3.26%.
The ‘Wednesday Strength’ Rebound
Despite the persistent Tuesday slump, the subsequent trading day frequently offers a turnaround. As Hirsch wrote, “Wednesday tells a more bullish story.”
On the Wednesday following Labor Day, the Russell 2000 averaged a 0.31% gain, the S&P 500 added 0.28%, the Nasdaq rose 0.27%, and the DJIA gained 0.25%. Notably, the DJIA boasts a positive return on these Wednesdays 66.7% of the time.
A Precursor to September Slumps
These diverging daily patterns arrive as investors navigate what is broadly considered the toughest time of the year. Hirsch noted that because September is historically the market’s weakest month, “the post-Labor Day action could provide an important early indication of whether seasonal weakness is beginning to assert itself.”
How Have Stock Markets Performed in 2026?
The S&P 500 index has advanced 12.54% year-to-date. Similarly, the Nasdaq Composite index was up 14.08%, and the Dow Jones gained 10.40% YTD.
On Friday, the SPDR S&P 500 ETF Trust (NYSE:SPY) and Invesco QQQ Trust ETF (NASDAQ:QQQ), which track the S&P 500 and Nasdaq-100, respectively, closed mixed. The SPY was down 0.39% to $770.19, while the QQQ advanced by 0.18% to $718.96. Meanwhile, the Dow tracker, State Street SPDR Dow Jones Industrial Average ETF Trust (NYSE:DIA), also ended 0.53% lower at $534.08.
As of the publication of this piece, the futures of the S&P 500 and Dow Jones indices were trading lower, while the Nasdaq 100 index edged higher overnight.
Disclaimer: This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors.
Photo courtesy: Shutterstock
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