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Jun 18, 20261
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U.S. Stocks Rise on U.S.-Iran Peace Deal; Tech Leads Gains

U.S. stocks closed higher on Thursday as investors welcomed a U.S.-Iran peace agreement signed by Presidents Trump and Pezeshkian. The deal, effective immediately, reopens the Strait of Hormuz to commercial shipping and lifts the U.S. naval blockade, with further negotiations on Iran's nuclear program expected over the next 60 days.
Quick Facts
Who
Donald Trump
What
U.S. and Iran signed Memorandum of Understanding for interim peace agreement
When
Wednesday (agreement signed)
Where
United States
- U.S. and Iran signed Memorandum of Understanding for interim peace agreement
- Strait of Hormuz reopened to commercial shipping
- U.S. naval blockade in the region lifted
- S&P 500 and Nasdaq gained on market close
- Technology and consumer discretionary sectors led gains
U.S. stock markets closed higher on Thursday as investors welcomed the signing of a Memorandum of Understanding between the United States and Iran. The Dow Jones Industrial Average rose 0.14 percent to 51,564.7, while the S&P 500 added 1.08 percent to 7,500.58 and the Nasdaq Composite Index increased 1.91 percent to 26,517.93. Technology and consumer discretionary sectors led the gains, rising 2.68 percent and 1.76 percent respectively, while energy and financials declined 1.73 percent and 0.91 percent.
U.S. President Donald Trump and Iranian President Masoud Pezeshkian signed the interim peace agreement memorandum on Wednesday, with the deal taking effect immediately. Key provisions include the reopening of the Strait of Hormuz to commercial shipping and the lifting of the U.S. naval blockade in the region. Negotiations on longer-term issues, including Iran's nuclear program, are expected to continue over the next 60 days.
Oil prices showed mixed reactions to the agreement. West Texas Intermediate crude for July delivery fell 0.19 dollars, or 0.25 percent, to settle at 76.6 dollars per barrel, while Brent crude for August delivery rose 0.30 dollars, or 0.38 percent, to settle at 79.85 dollars per barrel. Financial analysts noted the decline in oil prices may ease recent inflation concerns, though some cautioned that markets may be overly optimistic about the speed of regional reopening.
Markets also reflected Federal Reserve signals that interest rates may remain elevated longer than previously anticipated, with several officials indicating a possible rate hike later in the year. U.S. initial jobless claims for the week ending June 13 fell by 4,000 to 226,000, roughly in line with analyst expectations. In individual stock movements, Intel and other chip stocks rallied, while SpaceX continued to decline, falling 3.56 percent on Thursday after a previous 4.95 percent drop, despite gains from its recent initial public offering.
The U.S. stock market will be closed Friday in observance of Juneteenth National Independence Day.
Why This Matters
The U.S.-Iran peace deal signals a major shift in regional geopolitics and energy markets, directly affecting oil prices, inflation expectations, and investor sentiment. Stock market gains in tech and consumer sectors indicate investor confidence in sustained growth, while the reopening of the Strait of Hormuz could stabilize global energy supplies and reduce shipping costs. Market participants should monitor the 60-day nuclear negotiations closely, as setbacks could trigger sharp reversals in current gains.
Timeline & Sources
Jun 13, 2026
WireWeek ending; U.S. initial jobless claims fall to 226,000
Jun 17, 2026
WireU.S. President Donald Trump and Iranian President Masoud Pezeshkian signed the Memorandum of Understanding for interim peace agreement
Jun 17, 2026
WirePeace agreement takes effect immediately; Strait of Hormuz reopens to commercial shipping; U.S. naval blockade lifted
Jun 18, 2026
WireU.S. stock markets close higher; Dow rises 0.14%, S&P 500 gains 1.08%, Nasdaq increases 1.91%
Jun 20, 2026
WireU.S. stock market closed for Juneteenth National Independence Day
Jul 17, 2026
WireNegotiations on longer-term issues including Iran's nuclear program expected to conclude within 60 days