The stock market closed mixed on Wednesday after U.S. President Donald Trump declared that the ceasefire with Iran was “over,” reigniting geopolitical tensions that sent oil prices surging and left investors navigating competing pressures across sectors.
The S&P 500 fell 0.28% to end at 7,482.71 points, while the Nasdaq Composite gained 0.20% to 25,870.65 points and the Dow Jones Industrial Average declined 1.09% to 52,348.39 points, according to Reuters. The mixed performance reflected a market torn between falling energy-intensive stocks and gains in semiconductor shares.
Speaking at a NATO summit in Turkey, Trump said he had no interest in further talks with Iran and warned that Washington would likely carry out additional strikes. His remarks marked the latest reversal in a back-and-forth pattern of escalation and diplomacy that has kept investors off-balance for months, according to Reuters.
Oil prices jumped on the news. Brent crude futures settled up 5.2%, while U.S. oil prices briefly rose past $75 per barrel mid-day Wednesday—up more than $6 from Tuesday—before easing lower before the market close, according to Politico. The surge reversed a monthlong decline in fuel prices that had followed the June ceasefire agreement.
The oil rally weighed on energy-sensitive sectors. Nine of the 11 S&P 500 sector indexes declined, led lower by industrials, down 3.41%, followed by a 2.45% loss in materials, Reuters reported. Airlines including United and Delta both lost more than 1%, while cruise operators Carnival and Norwegian Cruise Line slipped 3.9% and 1.9% respectively.
Tech stocks offered a counterweight. Broadcom rallied 4.8% after Apple announced it plans to spend more than $30 billion on a chip-supply agreement with the chipmaker, Reuters noted. Nvidia rose 3.65% after reports that China plans to allow its top AI firms to buy a limited number of the company’s H200 chips. However, larger tech names fell, with Microsoft and Alphabet each down more than 1%, and Meta Platforms losing 2%.
The volatility underscores how deeply the Iran conflict has unsettled markets. Rob Haworth, senior investment strategist at U.S. Bank Wealth Management, told Reuters that “duration is the key here. How long does this go on?” He added that damage to Iranian infrastructure could trigger stronger market reactions if it prompts Iranian retaliation.
Trump’s declaration came after months of a fragile ceasefire that had begun to ease supply concerns. The Strait of Hormuz, a critical oil chokepoint, had reopened to tanker traffic, with an average of just over 30 vessels transiting daily last week, down from the pre-war historical average of 138 vessels per day, according to Politico. That recovery may now be at risk if renewed hostilities deter shipping.
The International Monetary Fund on Wednesday lowered its 2026 global growth forecast to 3%, citing ongoing risks posed by the Middle East conflict, Reuters reported. Inflation concerns also mounted at the Federal Reserve, with traders now projecting a likely rate hike by December, according to CME’s Fedwatch tool.
Sources
- Reuters — stock market closing indexes and performance, Trump’s remarks at NATO, oil price moves, sector performance, and analyst commentary
- Politico — oil price details, ceasefire context, Strait of Hormuz tanker traffic data, and market analyst perspectives
