Ross MayfieldDow Jones Industrial AverageBairdAmazonNvidia CorporationSupreme National Security CouncilIntel CorporationEli Lilly and CompanyS&P 500NasdaqAlphabet Inc.

Wall Street ends down as US-Iran peace optimism fades; Amazon dips 2.1%, Alphabet falls 3.8%, S&P 500 declines 0.32%

Wall Street closed lower on Tuesday as optimism for a US-Iran peace deal waned, with Amazon down 2.1% and Alphabet falling 3.8%. The S&P 500 declined 0.32%, reflecting investor concerns over rising energy costs and inflation linked to the ongoing conflict in the Middle East.

Schaeffer's Investment Research Schaeffer's Investment Research+1 source11 August 2026 · 23:44 UTC
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Wall Street's decline on Tuesday was driven by fading optimism regarding a US-Iran peace agreement, with Amazon and Alphabet leading the losses at 2.1% and 3.8% respectively. The S&P 500 fell 0.32% to 7,728.20 points, while the Nasdaq dropped 0.6% to 26,445.45 points.

Investors are increasingly concerned about rising energy costs linked to the ongoing conflict in the Middle East, which have spurred inflation worries. The newly appointed secretary of Iran's Supreme National Security Council stated that the Strait of Hormuz will remain closed unless the U.S. accepts Iran's conditions for peace.5

Ross Mayfield, an investment strategy analyst at Baird, noted, "As has been the case for months, it's just really hard to come to an agreement that works for everyone. Oil is a little higher, pricing in more uncertainty around that." He added, "The market has obviously gyrated around this conflict at times, but it hasn't been the big headwind that a lot of people imagined it might be."

The S&P 500 energy sector index climbed 1.1% amid these developments, reflecting the complex dynamics of the market influenced by geopolitical tensions.

Key Insight
“The S&P 500 fell to 7,728.20, while the Nasdaq dropped 0.6% and the Dow declined 0.34%. Brent crude held near one-week highs as the Strait of Hormuz remains closed, with Iran's security council saying it will stay shut unless the U.S. changes behavior.”
CuriousCats studied:
1
Schaeffer's Investment ResearchSchaeffer's Investment Research
“The equity has increased its offering to $20 billion, a per share price of $95. So far for 2026, INTC sports an impressive 161% lead, and today was last seen down 0.6% to trade at $96.98.”
Schaeffer's Investment Research →
2
reuters.comreuters.com
“Wall Street ended lower on Tuesday, with Amazon and Alphabet dipping, as investors became more pessimistic about a potential ​deal to bring stability to the Middle East.”
reuters.com →
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