Wall Street Slips on Weak Data and Higher Oil; September Starts on a Down Note

All three major U.S. indexes closed lower on Tuesday, marking a rough start to a historically weak month. The Dow fell 419 points (0.8%), the Nasdaq lost 1%, and the S&P 500 dropped 0.7%. Weak economic indicators and rising oil prices weighed on market sentiment.
Market breadth was notably negative, with declining stocks outpacing advancers by roughly two-to-one on the NYSE and nearly three-to-one on the Nasdaq. The CBOE volatility index jumped almost 10%, while trading volume slightly exceeded the recent 20-session average. Energy was the lone bright spot, gaining 2% as oil prices surged.
Escalating U.S.-Iranian hostilities, including strikes on Larak Island and attacks on U.S. bases in Jordan, drove crude prices sharply higher. This geopolitical tension coincided with a global bond selloff, pushing the 10-year Treasury yield to a 20-month peak. Market expectations now lean toward a quarter-point Federal Reserve rate hike in September, following the Fed chair's warnings about persistent inflation.
The combination of surging oil prices and higher bond yields could squeeze household budgets through elevated fuel costs and pricier mortgages or loans. For investors, a historically weak September may amplify market volatility, potentially eroding retirement account balances. If the Federal Reserve follows through with a rate hike, businesses facing higher financing costs might slow hiring or capital spending, which could eventually weigh on job growth and overall economic momentum.