US stock futures slump, oil jumps after Iranian media reports explosions on Kharg Island

Stocks returned to negative territory in premarket trading and oil futures jumped after Iranian state-sponsored media said that explosions were heard on Kharg Island.

The Mehr News Agency, which reported this at 6:25 a.m. ET, did not comment on the source of these explosions. Fox News reported that the US targeted military installations, and unintentionally hit a landing dock. Axios also reported that the strikes were intended to hit military targets, citing a US official.

The SPDR S&P 500 ETF turned from slightly positive to down about 0.5% in the wake of this report, and extended losses after President Donald Trump posted on Truth Social that “a whole civilization will die tonight.”

West Texas Intermediate crude oil futures traded about 3% higher to $116 per barrel after having previously been roughly flat.

Trump’s Tuesday morning post seemingly reaffirms his commitment to escalate attacks on Iran, including targets that can be considered war crimes, if the Strait of Hormuz is not reopened. His current deadline, which has previously been pushed back on multiple occasions, is 8 p.m. on Tuesday night.

On Sunday, the president’s Truth Social account posted that “Tuesday will be Power Plant Day, and Bridge Day, all wrapped up in one, in Iran.”

Kharg Island handles roughly 90% of Iran’s crude exports. Strikes that reduce Iran’s ability to ship oil would further disrupt energy markets, which have been roiled by the war and the limited movement of tankers through the Strait of Hormuz, a key choke point. Initial US attacks on Kharg Island in March were said to have hit military sites rather than energy infrastructure.