Dow Posts Worst September Start Since 2008 Amid Rising Concerns

The Dow Jones Industrial Average recorded its worst performance during the first ten days of September since 2008, according to market data. The S&P 500 and Nasdaq Composite also posted their weakest starts for the month in over five years. This downturn coincided with the anniversary of Lehman Brothers' bankruptcy filing—a key event that triggered the 2008 financial crisis. September has historically been a weak period for U.S. equity indexes, showing negative average returns across major indices like the Dow and Nasdaq Composite. Analysts attribute this month's struggles to rising oil prices, higher bond yields, concerns over AI developments, and expectations of another Federal Reserve rate hike on Wednesday. These factors are creating headwinds for risk assets but not necessarily signaling an end to the bull market. This is part of a pattern seen in previous Septembers—2020, 2021, and 2022—all marked by stock declines due to geopolitical tensions, pandemic-related issues, or aggressive Fed rate hikes. The current environment suggests increased volatility but not necessarily an outright bear market.

By Joseph Adinolfi Tue, September 15, 2026 at 11:20 PM GMT+3 3 min read · Yahoo Finance ·

Dow Posts Worst September Start Since 2008 Amid Rising Concerns

Tickers: $SPGI

Topics: 2008 financial crisis Dow Jones Nasdaq Composite S&P 500 September stock trends

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