07:21 AM EDT, 06/23/2025 (MT Newswires) -- The benchmark US stock measures were mostly edging higher before the opening bell Monday as traders evaluate President Donald Trump's decision to have the US join Israel's attacks on Iran, potentially risking a wider conflict in the Middle East.

The S&P 500 rose 0.1% and the Nasdaq was slightly in the green, while the Dow Jones Industrial Average ticked down less than 0.1% in premarket activity. The indexes ended Friday's trading session mixed, with the S&P 500 recording its third consecutive day of losses.

The US on Saturday launched airstrikes on Iranian nuclear sites, multiple media publications reported. "Monumental damage was done to all nuclear sites in Iran, as shown by satellite images," Trump said in a Sunday post on Truth Social. "Obliteration is an accurate term!"

Iran has reportedly vowed to respond to the US attack. State media reported that the country's parliament has backed the closure of the crucial Strait of Hormuz, although the final decision lies with the Iranian national security council. Last week, the International Energy Agency warned that closure of the strait would have a "major impact" on global oil and gas markets.

West Texas Intermediate crude oil inclined 1% to $74.61 a barrel before the open, while Brent gained 1% to $77.74.

Investors will be looking ahead to the personal income and outlays report for May later this week. The report includes the personal consumption expenditure core price index, the Federal Reserve's preferred inflation metric.

In an interview with CNBC on Friday, Fed Governor Christopher Waller said the central bank may be in a position to ease monetary policy "as early as July," as tariffs are unlikely to increase inflation significantly. "That would be my view, whether the committee would go along with it or not," Waller added.

The Federal Open Market Committee kept its policy rate unchanged for a fourth straight meeting last week, while sticking to its federal funds rate outlook for 2025 amid higher inflation expectations.

Treasury yields were pointing higher premarket, with the two-year rate climbing 1.5 basis points to 3.92% and the 10-year rate rising 1.8 basis points to 4.39%.

Monday's economic calendar has the purchasing managers' index report from S&P Global for June at 9:45 am ET, followed by the new home sales report for last month at 10 am.

Fed Governor Michelle Bowman is scheduled to speak at 10 am, while Governor Adriana Kugler's remarks are due at 2:30 pm. Chicago Fed President Austan Goolsbee is also slated to speak Monday.

FactSet Research Systems ( FDS ) and Commercial Metals ( CMC ) report their latest financial results before the bell, while KB Home ( KBH ) releases earnings after the markets close. Parcel delivery giant FedEx ( FDX ) , chipmaker Micron Technology ( MU ) and sportswear heavyweight Nike ( NKE ) post their results later in the week.

Gold dipped 0.1% to $3,382 per troy ounce, while bitcoin climbed 2.5% to $101,531.