(Updates with index/price moves, macroeconomic data, and political/company news from the first paragraph.)
US equity indexes rose amid a rally in mega-cap semiconductors and as crude oil extended declines to the lowest in more than three months after a signing of the interim Iran peace deal set the stage for an immediate reopening of the Strait of Hormuz.
The Nasdaq Composite advanced 1.5% to 26,406.3, with the S&P 500 up 1.1% to 7,499.9 and the Dow Jones Industrial Average higher by 0.4% to 51,673.7 after midday Thursday.
All sectors except energy, health care, consumer staples, and financials rose. Technology led the gainers, followed by consumer discretionary.
President Donald Trump and Iranian President Masoud Pezeshkian digitally signed a memorandum of understanding targeting a permanent peace deal to end the war between the US and Iran.
"Upon the signing of this MOU, the Islamic Republic of Iran will make arrangements using its best efforts for the safe passage of commercial vessels with no charge for 60 days only from the Persian Gulf to the Sea of Oman and vice versa," Reuters cited one of the clauses in the framework agreement. "The traffic of commercial vessels will immediately start and, considering the need for removing the technical and military obstacles and de-mining by the Islamic Republic of Iran, will be instated within 30 days."
Crude oil futures declined, with front-month global benchmark North Sea Brent slumping 2.6% to $77.49 per barrel after midday. The US West Texas Intermediate sank 3% to $74.50 per barrel, the lowest level since around early March.
Most US Treasury yields fell, with the 10-year down 2.2 basis points to 4.44%, as sliding crude oil alleviates inflation concerns.
In precious metals, gold futures slumped 3.2% to $4,240.5, while silver futures plummeted 6.6% to $66.13 as investors priced in higher interest rates this year.
On Wednesday, the Federal Reserve unanimously left its benchmark rate unchanged in the 3.50% to 3.75% range, while excluding language that suggested a lingering bias toward cuts. The probability of US interest rates rising to the 4% to 4.25% target range soared to 33% as of Thursday afternoon from 14% a week ago, implying the market doubled its outlook for two rate increases of 25 basis points each by the end of 2026, according to the CME FedWatch tool.
In company news, Intel (INTC) shares surged 11% to among the leaders on the S&P 500 and the Nasdaq, after Trump said Apple (AAPL) has agreed to work with Intel to design and build chips in the US.
Tower Semiconductor (TSEM) said it shipped more than five million coherent photonic integrated circuits in partnership with Marvell Technology (MRVL). Shares of Marvell soared 12%, the top gainer on the Nasdaq.
In economic news, US initial jobless claims fell to 226,000 in the week ended June 13 from an upwardly revised 230,000 in the previous week, compared with expectations for 225,000 in a survey of analysts compiled by Bloomberg.