The S&P 500 ETF (SPY) fell 1.2% on July 29 as the Federal Reserve held interest rates steady while tensions between the United States and Iran reignited, sending oil prices surging past $90 per barrel.
The Fed kept its benchmark rate in the 3.5% to 3.75% range, marking the fifth consecutive meeting without a change. However, three Federal Reserve officials dissented and voted for a rate increase, signaling growing concern about inflation that remains well above the central bank’s 2% target.
The market decline accelerated after Iran launched what U.S. Central Command described as an “attempted surprise attack” on Tuesday, breaking a pause in hostilities that had held since Friday. The U.S. military responded alongside Saudi Arabia by striking Tehran-backed militias in Iraq, reigniting the broader conflict.
Brent crude jumped more than 7% to over $90 per barrel on the renewed Middle East fighting, marking a sharp rebound from a two-week low earlier in the week when oil had dipped to $72. The price swings reflect deep uncertainty about whether the United States and Iran can reach a deal to allow oil tankers to move freely through the Strait of Hormuz to global customers.
Rising oil prices create a dual pressure on markets: they raise inflation concerns just as the Fed tries to cool price growth, and they increase input costs for companies, potentially squeezing profit margins. According to research on energy markets, when oil prices rise due to geopolitical shocks like conflict, the effect on inflation expectations can prompt investors to reassess the outlook for interest rates and economic growth.
The Dow Jones Industrial Average fell more than 1,100 points, or 2.2%, while the tech-heavy Nasdaq Composite sank nearly 1.3% as investors also continued to dump semiconductor stocks. SK Hynix’s record profit failed to meet analyst expectations, raising fresh doubts about whether the artificial intelligence boom can sustain the valuations now priced into Big Tech shares.
Treasury yields rose following the Fed decision, with the 10-year yield climbing to 4.62% from 4.61% late Tuesday. Long-dated bond yields typically climb when inflation concerns increase or when markets anticipate less central bank support ahead.
The market reaction reflects the tension between three competing forces: the Fed’s decision to hold rates steady despite inflation remaining above target, the surge in oil prices from Middle East conflict, and growing concerns about AI spending and chip sector valuations. Each pulls the market in a different direction, creating the volatility investors saw on Wednesday.
Sources
- Yahoo Finance — S&P 500, Dow, and Nasdaq closing prices; Brent crude surge to over $90; Fed rate decision and three dissenting votes; Iran attack and U.S. response; SK Hynix earnings miss.
- BNN Bloomberg — S&P 500 slip of 0.1% at 9:35 a.m. EDT; Brent crude leap of 5.6% to $86.64 per barrel; oil price swings from $72 to $102; inflation concerns and Fed decision uncertainty; Treasury yield rise to 4.62%.
- Detroit News — Federal Reserve held interest rates steady on Wednesday; 3.5%-3.75% range; dissenting votes noted.
- CBS News — Economists polled by FactSet predict Fed will hold rates at 3.5%-3.75%; fifth consecutive meeting without change.
- Orlando Sentinel — Brent crude leaped 7.2% to $88.03 per barrel after fighting resumed in Iran war; oil price jump raised worries about global oil flow.
- University of Michigan — Rising oil prices lead to cost-push inflation when suppliers pay more for materials and increase prices.
