Video: What is the Halloween Effect and Halloween Strategy in Investing?
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Are you familiar with the age-old adage “sell in May and go away”? As the season of November approaches, it’s a good time to delve into an intriguing market phenomenon known as the “Halloween Effect.”
So let’s unwrap this concept with PAA
Before we dive in, it’s important to note that the following discussion is for informational and educational purposes only. I don’t provide financial advice, nor should this be taken as such.
Always consult with a financial professional before making any investment decisions. This is simply a discussion about the phenomenon known as the “Halloween Effect.” by a random guy on the internet who knows how to Google.
That being said, let’s talk about
What is the Halloween Strategy and Halloween Effect?
The Halloween strategy, sometimes referred to as the Halloween effect or Halloween indicator, is a market timing approach. Here’s the gist:
Stocks tend to perform better from October 31 (Halloween) to May 1 than from May through October’s end.
Advocates of this strategy propose buying stocks in November, holding them over the winter, and then selling in April. They often advise reducing stock investments during the summer months or even avoiding them altogether.
This approach starkly contrasts the classic ‘buy-and-hold’ strategy, where investors maintain their positions for the long term, irrespective of market fluctuations.
And this strategy is by no mean a new thing, so let’s talk about:
Historical Roots of the Halloween Strategy
Halloween Strategy’s lineage traces back to the saying “sell in May and go away.” There’s even a longer version: “Sell in May, go away, come again St. Leger Day.”
The St. Leger Stakes is a famous horse race held in Doncaster, England, and is one of the oldest horse races in the world, dating back to 1776.
St. Leger Day usually falls in mid-September and marks the final leg of the English Triple Crown of thoroughbred horse racing.
The relevance of St. Leger Day to the stock market is primarily symbolic.
The idea is that by St. Leger Day, summer is concluding, and many British elites and financial professionals who might have taken time off or been preoccupied with the social season (including horse racing) would return to the city and refocus on business.
As a result, market activity might pick up again.
Historical context provides a fascinating backdrop. Many believe this investment pattern originated in the UK, where during summer, the privileged elite would migrate from London to their countryside estates.
This seasonal migration meant they’d often neglect their investment portfolios until their return in September.
The modern world offers a parallel with financial professionals taking vacations during the summer, possibly impacting market dynamics.
Cool as this idea sounds, just going by old patterns can be a bit risky for today’s investors. Just because something happened in the past doesn’t mean it’ll play out the same way now.
Ok, so
Does the Data Support the Halloween Strategy?
According to a study titled “Halloween Effect in developed stock markets: A historical perspective” published in 2020, in the US stock market and other developed markets, the Halloween effect was only noticeable starting from the middle of the 20th century.
So the plot twist is, this isn’t some ancient financial magic trick. It’s kinda like thinking your grandfather’s secret BBQ sauce recipe has been passed down for centuries, only to find out he picked it up from a magazine in the ’60s.
This research, published in International Economics, dives deep into the historical evaluation of the Halloween effect on the US stock market and its counterparts in other developed markets such as the UK, France, Canada, Germany, and Japan.
Utilizing various statistical techniques, including average analysis, Student’s t-test, ANOVA, and the Mann-Whitney test, alongside a trading simulation approach, the research investigates the evolution of the Halloween Effect. The findings are quite intriguing.
In the US stock market and other developed markets, the Halloween effect was only noticeable starting from the middle of the 20th century.
This means that, for a significant period in history, there was no discernible pattern linked to Halloween in stock market trends.
More recent data, however, suggests that the Halloween effect is still present in the US stock market as well as in most of the other developed markets.
This recurrence provides opportunities for savvy investors to construct trading strategies that potentially outperform the market average.
This observation underscores the adaptability of markets and their responsiveness to cultural and social events.
In essence, the research supports the Adaptive Market Hypothesis, which suggests that markets evolve and adapt based on a combination of rational and irrational behaviors of market participants.
In the context of Halloween, this means that while consumers are shelling out billions on festivities, traders and investors are leveraging historical trends linked to the season for their strategies.
So
Why Does the Halloween Strategy Work?
While there is no definitive explanation for why the Halloween strategy has shown some success historically, several factors may contribute to this phenomenon:
- Seasonality: Historically, stock market returns have exhibited a seasonal pattern, with returns typically being stronger in the winter months and weaker in the summer months. This pattern may be due to various factors, such as investor psychology, holiday-related trading patterns, or changes in market sentiment.
- Summer Vacations: During the summer months, many institutional investors and traders take vacations, which can lead to lower trading volumes and less market activity. This reduced liquidity can make the market more volatile and susceptible to price swings, potentially leading to lower returns.
- Tax Considerations: In some countries, tax considerations may play a role in the Halloween strategy’s effectiveness. An example could be Australia, where the fiscal year ends on June 30. In this case, selling stocks in May would allow investors to realize capital gains or losses just before the end of the tax year, potentially for tax planning purposes such as offsetting gains with losses or vice versa.
- Behavioral Factors: Investor behavior and sentiment can also play a role in market movements. During the summer months, investors may be more risk-averse due to factors like vacation schedules or concerns about market volatility, leading to a preference for less risky assets.
- Historical Anomaly: It’s important to note that the Halloween strategy’s effectiveness may be a historical anomaly, and there’s no guarantee that it will continue to work in the future. Market conditions can change, and past performance is not always indicative of future results.
However, all of these theories have their critics. For instance, the advent of electronic trading allows investors to trade from anywhere – be it a beach or a boardroom. The truth remains elusive, and the Halloween strategy stands as a captivating mystery.
So
Does Halloween Affect the Economy in General?
Outside the stock market, Halloween itself has a significant economic impact. In 2021, for example, Americans anticipated spending a whopping $10.14 billion on Halloween festivities, a figure that has witnessed steady growth over the years.
Halloween Effect also seems have some influence on the soft commodities market in general.
A study done in 2021 published in Agricultural Economics looked at how the Halloween spirit might affect the markets of certain goods, particularly “soft commodities” like cocoa, coffee, cotton, and a few others.
The research aimed to scrutinize the Halloween effect in the markets of basic soft commodities over a substantial period, from 1999 to 2020.
The authors incorporated a variety of statistical tests and methods in their study, including the two-sample t-test, the rank-sum Wilcoxon test, as well as examining the autoregressive conditional heteroskedasticity (ARCH) effect.
In addition to this, they also looked into how the January effect—a phenomenon where stock prices tend to increase in the month of January more than in other months—might interact with the Halloween effect on these markets.
The study found a noteworthy Halloween effect on the cotton market, significantly impacted by the January effect, which is a trend where financial markets, including commodities, tend to see a boost in prices during the month of January.
Conversely, they identified a significant reverse Halloween effect in the sugar market.
The study underscores the importance of considering seasonal effects when analyzing commodity markets, as these effects can play a significant role in price movements and market behavior.
The Halloween Effect also seems to affect the securitized real estate market too, at least in Hong Kong and the US.
Back in 2015, two researchers, Hui and Chan, did a study to find out more about this. They published their findings in a journal called Habitat International. They looked at different parts of the world, including five countries in Asia (Hong Kong, China, Japan, Thailand, and Malaysia), as well as the U.S., Canada, and Germany) from 1996 to 2013.
They used a special tool called the Shiryaev-Zhou index, a statistical method developed by Albert Shiryaev and Jiang Zhou, used in financial markets to predict drastic changes or trend reversals to check if Halloween and the start of the year (January) had any special effects on the housing market.
What they found was pretty interesting. Halloween Effects seems to make a noticeable difference in the securitized real estate market in places like Hong Kong and the U.S., but not really in the other countries they looked at. As for the January effect, it was only a thing in Hong Kong.
They thought maybe these effects weren’t as strong during tough economic times, or maybe because people started to know about these effects, they changed the way they acted, making these effects less predictable.
So, in simpler words, Halloween isn’t just a time for fun and games; it might also be a time when the housing market in certain places gets a bit of a shake-up. And this is something that’s pretty interesting for people who are into studying markets and money!
The Halloween strategy offers a fascinating perspective on market timing and investment approaches.
While historical data does validate its merits, the reasons behind its effectiveness remain a subject of debate.
As you plan your investment strategies or even just your Halloween celebrations, it’s always wise to be informed and consider all factors. Whether you believe in the Halloween strategy or not, it’s undeniably a treat to learn about!
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References:
- Plastun, A., Sibande, X., Gupta, R., & Wohar, M. E. (2020). Halloween Effect in developed stock markets: A historical perspective. International Economics, 161, 130-138.
- Hui, E., & Chan, K. (2015). Testing calendar effects on global securitized real estate markets by Shiryaev-Zhou index. Habitat International, 48, 38-45. https://doi.org/10.1016/J.HABITATINT.2015.03.009.
- Krawiec, M., & Górska, A. (2021). Are soft commodities markets affected by the Halloween effect?. Agricultural Economics, 67(12), 491-499.