Major indexes drop on September worries, upcoming data ReutersDow falls by more than 700 points as September turns ugly CNNU.S. stocks tumble, investors pause AI rally Yahoo FinanceDow closes 600 points lower to begin September, S&P 500 drops 2%: Live updates CNBCStock Market Today: Dow, S&P 500 and Nasdaq Are Down as Slowdown Fears Return — Live Updates The Wall Street Journal