Investing.com -- U.S.-listed energy stocks climbed in premarket trading Monday, tracking a more than 2% jump in oil prices after American forces struck an Iranian island in the Strait of Hormuz and Tehran retaliated.

Brent crude rose 3.5% to $91.20 a barrel by 05:06 ET (09:06 GMT), while U.S. West Texas Intermediate also gained 3.5% to $86.30 a barrel.

In turn, energy stocks rallied, with Chevron up 1.7% and Exxon Mobil rising 1.5%. Among producers, Occidental Petroleum advanced 1.8%, and ConocoPhillips gained 1.3%. Oilfield services firm Halliburton climbed 2.5%, while SLB rose 1.7%. Refiners also participated in the rally, with Marathon Petroleum up 0.6% and Phillips 66 gaining 1%.

U.S. forces struck two missile launchers on Iran’s Larak Island in the Strait of Hormuz on Sunday, marking the first confirmed American strikes on Iran since late July. Iranian state media reported Monday that Iran’s Revolutionary Guards responded by striking two U.S. air bases in Jordan.

President Trump added to the confusion Sunday with a brief social media post claiming Iran’s Kharg Island energy hub was being "blown to smithereens," accompanied by an AI-generated video clip. The post offered no further details, and there was no independent evidence the island had come under attack. Iran denied any strike occurred and said oil operations there were continuing normally.

Efforts to end the conflict remain stalled as international mediators work to reopen the Strait of Hormuz, a chokepoint that carried roughly one-fifth of global oil supply before fighting broke out at the end of February.

U.S. Treasury Secretary Scott Bessent told Reuters Sunday that Washington is likely to roll out new secondary sanctions against Iran on a weekly basis going forward.