Why the ‘Halloween Indicator’ isn’t working — and what smart investors are doing instead

The "Halloween Indicator" — the seasonal adage urging investors to sell in May and return after October — has failed its followers this year. Rather than declining through the summer months, equities delivered gains, meaning those who stepped aside missed part of the rally rather than avoiding a downturn.

The episode is a reminder that seasonal patterns are tendencies drawn from historical averages, not reliable timing tools. Markets are driven by earnings, interest rates, inflation data and sentiment, any of which can overwhelm a calendar-based signal in a given year. Treating such patterns as predictive rules carries real opportunity cost when they don't hold.

What to watch instead: whether the broad drivers of this rally — corporate earnings and the interest-rate outlook — remain intact, and how upcoming economic data shifts expectations. For most long-term investors, the practical lesson is that staying invested through the calendar, with a mix aligned to their goals and risk tolerance, has historically mattered more than trying to sidestep specific months.