U.S. Stocks Rise on Iran Deal Hopes Amid Ceasefire Risks

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  • May 27, 2026 at 9:33 AM ET
  • Est. Read: 2 Mins
U.S. Stocks Rise on Iran Deal Hopes Amid Ceasefire RisksAI-generated illustration — does not depict real events
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Key Takeaways

U.S. stocks rose Tuesday as investors weighed optimism over a potential peace deal between the United States and Iran against risks of ceasefire collapse. Tech shares led gains, with Nasdaq up 1.43% and S&P 500 up 0.87%. Brent crude prices spiked after U.S. strikes in southern Iran.

  • Nasdaq Composite rose 1.43%, closing at 26,721.44 points
  • S&P 500 gained 0.87%; Dow Jones unchanged at 50,577.23
  • Brent crude prices spiked to $99.67 per barrel after U.S. strikes in Iran
  • WTI crude fell below $90 on reports of Hormuz traffic restoration
  • Secretary of State Marco Rubio indicated progress in talks but President Trump opposed Iranian control of Strait of Hormuz

U.S. stocks rose Tuesday as investors weighed optimism over a potential peace deal between the United States and Iran against risks of ceasefire collapse, according to multiple reports. Tech shares led the gains, with the Nasdaq Composite rising 1.43% to close at 26,721.44 points, while the S&P 500 gained 0.87%. The Dow Jones Industrial Average remained unchanged at 50,577.23.

Hopes for a deal that would reopen the Strait of Hormuz drove market sentiment, as reported by Reuters and CNBC. However, U.S. military strikes in southern Iran on Tuesday raised concerns about the ceasefire's fragility. Both sides indicated progress toward an agreement but remained at odds over key issues.

The Guardian reported that Brent crude prices spiked after the U.S. strikes, climbing to $99.67 per barrel, up 3.67% on the day. Meanwhile, WTI crude fell below $90 following reports Iran would restore Hormuz traffic within a month of an agreement.

According to CNBC, Secretary of State Marco Rubio said that talks with Iran have made some progress and that 'we're going to give it every chance to succeed.' However, President Donald Trump has stated he will not permit Iran to control the key Strait of Hormuz as part of a deal. The White House also denied reports of a memorandum of understanding, calling them 'a complete fabrication.'

Economic data showed consumer sentiment in the U.S. darkened slightly amid inflation concerns, according to Reuters and CNBC. The dollar held steady as investors weighed fluctuating hopes for a near-term resolution to the Middle East conflict.

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