An old stock-market adage applies this month — how you should play it

The adage “sell Rosh Hashanah, buy Yom Kippur” is one of the oldest seasonal patterns on Wall Street, suggesting that investors trim positions before the Jewish New Year and re-enter after the Day of Atonement. This ten-day stretch historically carries a reputation for below-average equity performance, a quirk often attributed to reduced liquidity and portfolio adjustments rather than any fundamental shift in corporate earnings.

For market participants, the takeaway is less about a guaranteed trade and more about understanding how calendar-driven flows can shape short-term price action. The window between the holidays typically sees lighter trading volume, and with September’s broader seasonal weakness already in focus, any dip during this timeframe may reflect positioning rather than deteriorating fundamentals.

What to watch is whether the selling pressure is broad-based or concentrated in sectors that saw heavy inflows earlier this year. A shallow pullback that holds above key technical levels would align with the adage’s historical pattern. However, adages are general tendencies, not rules — the current macroeconomic calendar, inflation data, and central bank commentary will ultimately carry more weight than any folklore.