
By Ryan Casey Stephens, FPQP®
Special Contributor
As the crisp autumn air settles and Halloween draws near, a sense of mystery often pervades our thoughts. We find ourselves pondering the inexplicable, the peculiar, and perhaps even the unnerving. While most associate this time of year with spooky stories and supernatural phenomena, the world of finance also harbors its own share of baffling tales and unexplained patterns. Far from the realm of ghosts and goblins, these financial enigmas can be just as unsettling, challenging our rational understanding of markets and investments.
Indeed, some market events unfold with such strange regularity or uncanny coincidence that they seem almost… unnatural. Are these mere statistical anomalies, or do they hint at deeper, hidden influences shaping our financial landscape? This week, as we embrace the spirit of the season, let’s dim the lights, grab a flashlight, and delve into some truly spine-tingling market observations in our latest edition of Three Things to Know. Prepare to explore the eerie intersections of financial history, human psychology, and seasonal market trends.
The Enigmatic October: A History of Market Volatility
To the casual observer, October may seem like any other month, a transition between the warmth of summer and the chill of winter. Yet, within the hallowed halls of Wall Street and among seasoned investors, October carries an almost mythical reputation. This isn’t just autumn folklore; it’s a persistent market anomaly dubbed the October Effect, a phenomenon that has puzzled economists and analysts for decades. The legend suggests that this particular month has an unsettling propensity for precipitous stock market declines and severe crashes.
Historically, October has indeed been the backdrop for some of the most dramatic and devastating events in financial history. We’re not talking about minor fluctuations; we’re referring to monumental collapses that reshaped economies and investor confidence. The infamous Panic of 1907, which led to the creation of the Federal Reserve, had its roots in an October crisis. Then, of course, there’s “Black Tuesday,” “Black Thursday,” and “Black Monday” of 1929, culminating in the Great Depression, all occurring in the final week of October. More recently, the devastating Black Monday of 1987 saw the Dow Jones Industrial Average plummet by an unprecedented 22.6% in a single day—again, in October.
The sheer number of major market downturns concentrated in this 31-day period makes it difficult to dismiss as pure coincidence. While financial academics often attempt to debunk the October Effect, arguing that statistically, crashes are distributed throughout the year, the psychological impact and historical weight of these events create a self-fulfilling prophecy for many. Investors, wary of the “cursed” month, may become more prone to selling at the first sign of trouble, amplifying downward movements.
Adding to this eerie narrative, the S&P 500 index, a key barometer of the U.S. stock market’s health, recently hit its lowest point of the year on October 13, 2022. This recent dip, while not a crash of historical proportions, served as a stark reminder that October’s reputation for volatility remains pertinent even in modern times. Whether driven by genuine underlying economic factors or by collective investor anxiety, the “October Effect” continues to cast a long shadow over the financial world, prompting caution and introspection among those who navigate the markets.
America’s Pastime and Financial Peril: The Phillies’ Eerie Market Connection
Beyond the spooky financial phenomena, sometimes history presents coincidences so striking they demand attention. Consider America’s beloved pastime, baseball, and specifically the Philadelphia Phillies. As the World Series captivates millions, with teams battling for championship glory, the stakes for some extend beyond the diamond. For those tracking market anomalies, the Phillies’ championship history carries an uncanny, almost foreboding, association with major market downturns.
It sounds like the stuff of urban legend, but delve into the record books, and a peculiar pattern emerges. The Phillies’ previous three World Series victories have all occurred in eerily close proximity to significant financial crises, almost as if their triumphs herald impending economic turbulence. Let’s revisit these unsettling moments:
- 1929: The First Championship and the Great Crash
The Phillies’ inaugural World Series title in 1929 arrived, fittingly enough, in October. This historic win, however, wasn’t just a celebration of sporting achievement; it coincided with one of the darkest periods in American financial history: the Wall Street Crash of 1929. The “Roaring Twenties,” a decade of unprecedented prosperity and speculative euphoria, came to a brutal halt as the stock market plummeted. Fortunes evaporated overnight, triggering the Great Depression. The timing of the Phillies’ victory, amidst this economic upheaval, is a chilling footnote in both sports and financial annals. - 1980: A Second Victory Amidst Stagflation Fears
Nearly half a century later, in 1980, the Phillies once again hoisted the Commissioner’s Trophy, defeating the Kansas City Royals. While the immediate aftermath was one of jubilation for Philadelphia fans, the broader economic climate was far from celebratory. This championship arrived just one month before the onset of a significant bear market in 1980. What fueled this market decline? The United States was grappling with severe “stagflation” – a toxic combination of high inflation and stagnant economic growth. The Federal Reserve, under Chairman Paul Volcker, was aggressively raising interest rates to combat rampant inflation, a necessary but painful measure that often tightens credit and dampens market enthusiasm. The Phillies’ win, therefore, marked a prelude to a period of intense economic uncertainty and monetary policy upheaval. - 2008: The Most Recent Triumph and Global Financial Collapse
Perhaps the most memorable and recent instance occurred in 2008. The Phillies secured their third World Series title in a year that needs little introduction to anyone who lived through it. The Global Financial Crisis of 2008, triggered by the collapse of the subprime mortgage market and subsequent failures of major financial institutions like Lehman Brothers, sent shockwaves across the world. Economies teetered on the brink, governments implemented massive bailouts, and investor confidence evaporated. The Phillies’ championship victory that year, while a source of pride for the city, unfolded against a backdrop of unprecedented financial turmoil and widespread panic.
While it would be highly irrational to suggest a direct causal link between the Phillies’ World Series wins and market crashes, the recurring pattern is undeniably striking. It serves as a fascinating example of how disparate events in popular culture can sometimes align with significant economic shifts, creating a narrative that’s too peculiar to ignore. For fans of market lore and baseball, it adds an extra, slightly ominous, layer to every Phillies’ postseason run.
The Halloween Strategy: Unlocking Seasonal Market Gains
As trick-or-treaters flock to your door, laden with candy, a lesser-known, yet equally intriguing, tradition in the financial world quietly begins: the Halloween Strategy. This isn’t about spooky investments; it’s a seasonal investing strategy that challenges conventional wisdom and has surprisingly robust historical performance. It posits a simple, yet counterintuitive, approach to maximizing returns: buy stocks around Halloween (late October/early November) and sell them around May Day (late April/early May).
This strategy is essentially the inverse of the more commonly known, and often derided, adage “Sell in May and Go Away.” While “Sell in May” suggests that investors should divest their holdings during the summer months due to historically lower returns, the Halloween Strategy embraces the opposite. It advocates for holding equities during the “best six months” of the year – typically November through April – and moving into cash or less volatile assets for the “worst six months,” from May to October.
Historical Performance and Underlying Theories
The numbers supporting the Halloween Strategy are compelling. Studies examining market data over several decades have consistently shown its effectiveness. For instance, an analysis covering the period from 1970 to 2017 revealed that investors who employed this seasonal tactic would have outperformed those who bought in May and sold in October by an average of 5.05 percent. This substantial difference in returns over nearly half a century cannot be easily dismissed as mere statistical noise.
But why does this “eerie timing” work? The exact reasons remain a subject of debate among financial experts, adding to its mysterious appeal. Several theories attempt to explain this persistent seasonal anomaly:
- Holiday Season Optimism: The period from November to April encompasses major holidays like Thanksgiving, Christmas, and New Year’s, often associated with increased consumer spending and general economic optimism. This festive sentiment might translate into greater investor confidence and higher market activity.
- Institutional Investing Cycles: Many institutional investors, such as pension funds and mutual funds, operate on fiscal years that might influence their portfolio rebalancing and investment decisions around these times. There could be a tendency to deploy capital more aggressively towards the end of the calendar year and into the new year.
- Reduced Summer Trading: The “Sell in May” component might be linked to lower trading volumes and liquidity during the summer months (May to October), as many market participants, particularly in Europe where the strategy is thought to have originated, take extended vacations. Lower liquidity can lead to higher volatility and potentially weaker returns.
- Earnings Season: Key corporate earnings reports, particularly for the crucial fourth quarter, often occur early in the new year, driving market movements.
The strategy is believed to have roots in 18th-century England, where wealthy estate owners would indeed leave London for their country estates for the summer, returning to the city only in the autumn. While a charming historical anecdote, the modern applicability of this behavior to complex global markets is questionable as a primary driver. Nonetheless, the correlation persists.
While past performance is never a guarantee of future returns, the Halloween Strategy offers a fascinating glimpse into the less-understood aspects of market behavior. It suggests that even in highly efficient markets, seasonal patterns, whether driven by psychology, institutional flows, or historical quirks, can still offer unique opportunities for astute investors. It encourages a nuanced perspective, reminding us that sometimes, the market’s biggest tricks can also lead to its greatest treats.

Ryan Casey Stephens FPQP® is a mortgage banker with Watermark Capital. You can reach him at [email protected].