Dow Jones| Nasdaq | S&P 500 | US Stock Market Today |Live Updates: September begins with a weak seasonal backdrop
September also began with a historically weak seasonal backdrop for U.S. equities. Since 1926, the S&P 500 has recorded an average loss of 0.7% in September, making it the weakest month for stocks and the only month with a negative average return, according to Fisher Investments data cited from Finaeon. Strategists, however, said investors should not rely on seasonal patterns alone when making investment decisions. The economic backdrop remains important, with investors advised to focus on underlying conditions rather than attempt to time short-term seasonal volatility.