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Make the Most of the Halloween Effect With These ETF Plays
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Key Takeaways
The Halloween Effect highlights historically stronger stock returns from November through April.
Healthcare and semiconductor ETFs offer exposure to defensive earnings growth and sustained AI chip demand.
Small-cap and cloud computing ETFs offer potential opportunities amid seasonal trends and rising AI demand.
Halloween may be all about ghosts and goblins, but for Wall Street, the event often brings gifts and pleasant surprises. Thanks to the so-called Halloween Effect, stocks tend to brighten up as the jack-o’-lanterns are lit. Historically, investing in equities at the start of the Halloween Effect period—around Oct. 31—has been associated with solid long-term returns. At least, that is what research suggests.
What Is the Halloween Effect?
Halloween Effect is a historically observed increase in stock prices from the month of November through the end of April. It is the exact opposite of the popular adage "sell in May and then walk away,” which refers to the six months between May 1 and Oct. 31, as mentioned in Investopedia. Vacations, the holiday buying season (both Christmas and spring) and seasonal optimism probably contribute to this trend.
Historical data from Yardeni Research showed monthly S&P 500 performance from 1928 through September 2023. The combined return from November through April was about 5.3%, while the six-month period beginning in May delivered a much slimmer return of just 2.4%, per a Bankrate article, as quoted in Yahoo Finance. The pattern emphasizes the importance of the Halloween Effect.
ETF Strategies to Follow
Against this backdrop, let’s look at a few exchange-traded fund (ETF) areas that might benefit from the Halloween Effect this time around.
Medical
Rising oil prices, surging bond yields, and the AI-related debt boom have kept Wall Street unsteady in recent months. The S&P 500 has lost about 1.5% over the past month (as of Oct. 23, 2026).
The sector has a defensive, safe-haven appeal. Healthcare ETFs have gained traction on earnings growth, attractive valuations, clinical advances and their defensive appeal. Promising drug-trial results and expanding GLP-1 adoption are boosting optimism across healthcare subsectors.
Hence, healthcare investing makes sense amid the current uncertain market backdrop. Job growth in the sector remains decent. The Health Care Select Sector SPDR ETF (XLV - Free Report) is one option to consider (read: Why Healthcare ETFs Are Hovering Around One-Year Highs).
Semiconductors
Chip stocks are the backbone of the AI boom because advanced semiconductors control everything from training massive language models to running AI on devices. Demand for high-performance computing and data center capacity continues to surge as AI adoption spreads across industries.
South Korea expects chip industry growth through 2027 amid strong demand. China's rising memory-chip capacity and the potential for future oversupply, however, pose risks over the medium term (read: Will Chip Boom Last Through 2027? ETFs in Focus).
VanEck Semiconductor ETF (SMH - Free Report) andFirst Trust NASDAQ Semiconductor ETF (FTXL - Free Report) are two ETF picks.
Small Caps
This is a tricky area of the market. Small-cap stocks have recently shown stronger momentum than the tech-heavy large-cap indexes. TheState Street SPDR S&P 500 ETF Trust (SPY - Free Report) lost 1% last week, while the small-cap ETF iShares Russell 2000 ETF (IWM - Free Report) added 1.4% over the same period.
Small-caps offer an alternative to large-cap stocks exposed to the AI debt boom. Many large-cap AI stocks are committing enormous sums to capital spending and carrying substantial debtloads. Even Big Tech stocks—long known for their large cash reserves—are falling short of generating sufficient free cash flow amid heavy capex.
Plus, small-cap securities have historically outperformed in January. Thus, the wintermonths have often been favorable for smaller stocks. These factors bring the SPDR Portfolio S&P 600 Small Cap ETF (SPSM - Free Report) and Vanguard S&P SmallCap 600 ETF (VIOO - Free Report) into focus.
Cloud Computing
The widespread adoption of remote connectivity continues to fuel the need for scalable and reliable cloud solutions. In second-quarter 2026, global cloud infrastructure service spending grew to $143.4 billion (an increase of more than $43 billion from second-quarter 2025), marking the highest growth rate in eight years, per Synergy Research.
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Make the Most of the Halloween Effect With These ETF Plays
Key Takeaways
Halloween may be all about ghosts and goblins, but for Wall Street, the event often brings gifts and pleasant surprises. Thanks to the so-called Halloween Effect, stocks tend to brighten up as the jack-o’-lanterns are lit. Historically, investing in equities at the start of the Halloween Effect period—around Oct. 31—has been associated with solid long-term returns. At least, that is what research suggests.
What Is the Halloween Effect?
Halloween Effect is a historically observed increase in stock prices from the month of November through the end of April. It is the exact opposite of the popular adage "sell in May and then walk away,” which refers to the six months between May 1 and Oct. 31, as mentioned in Investopedia. Vacations, the holiday buying season (both Christmas and spring) and seasonal optimism probably contribute to this trend.
Historical data from Yardeni Research showed monthly S&P 500 performance from 1928 through September 2023. The combined return from November through April was about 5.3%, while the six-month period beginning in May delivered a much slimmer return of just 2.4%, per a Bankrate article, as quoted in Yahoo Finance. The pattern emphasizes the importance of the Halloween Effect.
ETF Strategies to Follow
Against this backdrop, let’s look at a few exchange-traded fund (ETF) areas that might benefit from the Halloween Effect this time around.
Medical
Rising oil prices, surging bond yields, and the AI-related debt boom have kept Wall Street unsteady in recent months. The S&P 500 has lost about 1.5% over the past month (as of Oct. 23, 2026).
The sector has a defensive, safe-haven appeal. Healthcare ETFs have gained traction on earnings growth, attractive valuations, clinical advances and their defensive appeal. Promising drug-trial results and expanding GLP-1 adoption are boosting optimism across healthcare subsectors.
Hence, healthcare investing makes sense amid the current uncertain market backdrop. Job growth in the sector remains decent. The Health Care Select Sector SPDR ETF (XLV - Free Report) is one option to consider (read: Why Healthcare ETFs Are Hovering Around One-Year Highs).
Semiconductors
Chip stocks are the backbone of the AI boom because advanced semiconductors control everything from training massive language models to running AI on devices. Demand for high-performance computing and data center capacity continues to surge as AI adoption spreads across industries.
South Korea expects chip industry growth through 2027 amid strong demand. China's rising memory-chip capacity and the potential for future oversupply, however, pose risks over the medium term (read: Will Chip Boom Last Through 2027? ETFs in Focus).
VanEck Semiconductor ETF (SMH - Free Report) andFirst Trust NASDAQ Semiconductor ETF (FTXL - Free Report) are two ETF picks.
Small Caps
This is a tricky area of the market. Small-cap stocks have recently shown stronger momentum than the tech-heavy large-cap indexes. The State Street SPDR S&P 500 ETF Trust (SPY - Free Report) lost 1% last week, while the small-cap ETF iShares Russell 2000 ETF (IWM - Free Report) added 1.4% over the same period.
Small-caps offer an alternative to large-cap stocks exposed to the AI debt boom. Many large-cap AI stocks are committing enormous sums to capital spending and carrying substantial debtloads. Even Big Tech stocks—long known for their large cash reserves—are falling short of generating sufficient free cash flow amid heavy capex.
Plus, small-cap securities have historically outperformed in January. Thus, the wintermonths have often been favorable for smaller stocks. These factors bring the SPDR Portfolio S&P 600 Small Cap ETF (SPSM - Free Report) and Vanguard S&P SmallCap 600 ETF (VIOO - Free Report) into focus.
Cloud Computing
The widespread adoption of remote connectivity continues to fuel the need for scalable and reliable cloud solutions. In second-quarter 2026, global cloud infrastructure service spending grew to $143.4 billion (an increase of more than $43 billion from second-quarter 2025), marking the highest growth rate in eight years, per Synergy Research.
Going forward, cloud infrastructure service revenues are on track to top $500 billion for the first time in 2026, per data provided by Statista. Amazon recently made headlines by directly stating its AI cloud capacity is sold out through 2027, with considerable commitments extending into 2028, thanks to growing demand for AI infrastructure. WisdomTree Cloud Computing ETF (WCLD - Free Report) is an ETF to play the trend.