September Is Historically the Worst Month for Stocks. A Pattern From 2000 Says This Could Happen Next.
September has historically produced negative or weaker stock returns—an anomaly dubbed the “September Effect”—and this year it is layered with concerns including sticky inflation, rising energy prices, hawkish signals, and high U.S. Treasury yields, alongside a U.S.-Canada trade war and a U.S.-Iran war.
Sep 6, 2026 ·
Yahoo Finance



















