-- US benchmark equity indexes rallied intraday, while oil prices slumped after Washington and Iran agreed to a two-week ceasefire.
The Nasdaq Composite jumped 2.9% to 22,651.5 after midday Wednesday, while the Dow Jones Industrial Average increased 2.6% to 47,803.5. The S&P 500 advanced 2.4% to 6,778.6. Barring energy's 4.6% decline, all sectors were in the green, led by a 3.9% rise in communication services.
West Texas Intermediate crude oil sank 15% to $95.85 a barrel intraday, while Brent futures tumbled 13% to $95.40.
US President Donald Trump, who had set an 8 pm ET, Tuesday, deadline for Tehran to fully reopen the Strait of Hormuz, agreed to suspend planned attacks on Iran for two weeks upon Pakistan's request. Tehran said it would allow "safe passage" through the key trading route, subject to coordination with Iranian authorities.
However, reports about ceasefire violations signified the possible fragile nature of the pact.
"While markets are hailing the agreement as cause for celebration, it remains to be seen if the ceasefire will hold, and if flows resume through the Strait of Hormuz," Stifel said in a note.
Iran halted oil tanker traffic through the waterway after Israel attacked Lebanon, CNN reported Wednesday, citing semi-official news agency Fars. Separately, Kuwait and the United Arab Emirates reportedly said they were targeted with Iranian drones and missiles.
Airline and cruise operator stocks jumped intraday, with Carnival (CCL) up 11%, the top gainer on the S&P 500. United Airlines (UAL) surged 9.9%, among the best performers on the index. Southwest Airlines (LUV) and American Airlines (AAL) were also up sharply, along with Norwegian Cruise Line (NCLH) and Royal Caribbean Cruises (RCL).
US Treasury yields were lower intraday, with the 10-year rate down 6.4 basis points at 4.28% and the two-year rate dropping six basis points to 3.77%.
In company news, Meta Platforms (META) shares soared 7.9%, among the best performers on the S&P 500, after the tech giant unveiled its Muse Spark artificial intelligence model.
Delta Air Lines (DAL) logged better-than-expected first-quarter results amid robust corporate and leisure demand. The air carrier's shares were up 5.8% intraday.
Exxon Mobil (XOM) expects its global oil-equivalent output to take a hit in the first quarter due to production disruptions caused by the Middle East conflict. Shares of the US oil giant were down 5.9%, while smaller rival Chevron (CVX) fell 5.5%, the steepest decline on the Dow.
Gold was up 1.7% at $4,764.70 per troy ounce, while silver gained 4.7% to $75.35 per ounce.