(Updates with index moves and geopolitical developments from the first paragraph.)
US equity indexes rose after the US and Iran reached a framework agreement to end the war in the Middle East, setting the stage for a reopening of the Strait of Hormuz, the chokepoint for about a fifth of global crude oil flows.
The Nasdaq Composite jumped 3% to 26,660.1, the S&P 500 jumped 1.9% to 7,574.4, and the Dow Jones Industrial Average advanced 1.4% to 51,921.7.
Energy and consumer staples were among the decliners, while technology, communication services, and consumer discretionary led the gainers.
Iran's Supreme National Security Council confirmed on Sunday that a memorandum of understanding had been reached, with military operations on all fronts set to cease immediately. No text of the MoU has been released, and the duo has offered conflicting accounts of what will follow a signing ceremony in Switzerland on Friday, CNN reported.
The peace deal will end the US blockade of Iranian ports and reopen the Strait of Hormuz, according to multiple media reports. Iran's Foreign Ministry spokesman, Esmail Baghaei, said the ceasefire in Lebanon - one of Iran's preconditions for a negotiated settlement - has been observed in the memorandum of understanding, Al Jazeera reported.
Crude oil futures slumped. Front-month global benchmark North Sea Brent slumped 5.5% to $80.22 per barrel, and US West Texas Intermediate sank 5.1% to $82.88 per barrel.