The widespread fear of an October stock market crash has little statistical backing, according to market analyst Mark Hulbert writing in MarketWatch.
Hulbert argues that the risk of a sharp U.S. market decline in October is no higher than during any other month of the year.
Despite this reality, many investors continue to treat October as a uniquely dangerous period, a belief that can have measurable consequences for asset prices.
That collective anxiety may actually work in favor of disciplined investors who understand the underlying data and resist the seasonal panic.
According to Hulbert’s data, in 93% of years since the S&P 500 was created in 1957, the index finished the year higher than its October low.
The average gain of the S&P 500 from its October low to the end of the year was 7.4%, a substantial move by any measure.
That 7.4% figure is nearly twice the average increase seen over comparable periods tied to the other 11 months of the year.
Hulbert also examined the recommendations of several dozen stock market timers who specialize in tracking the Nasdaq, adding another layer of data to his broader argument.
The core insight is that irrational investor behavior around October creates a setup that attentive market participants can potentially turn to their advantage.
When fear suppresses prices without a corresponding increase in actual risk, the resulting dip can represent an opportunity rather than a warning signal.
Historical performance of the S&P 500 suggests that those who stay invested through October rather than retreating to cash have consistently fared better over the long run.
Hulbert’s analysis challenges a deeply ingrained piece of market folklore that has persisted despite decades of evidence pointing in the opposite direction.
