US heating oil futures rose near 3% to $3.64 per gallon on June 10 as fresh US self-defence strikes on Iran threatened a fragile ceasefire, the Strait of Hormuz remained under dual blockade, and US distillate inventories rose by 1.502 million barrels in the final week of May.

Key Highlights

  • US heating oil futures rose near 3% to $3.64 per gallon on June 10, reversing the prior session's decline.
  • US Central Command confirmed self-defence strikes on Iran, ordered by President Trump after a US helicopter was downed over the Strait of Hormuz.
  • The fresh strikes threatened a fragile ceasefire and reduced the near-term probability of a Hormuz reopening.
  • The Strait of Hormuz remained largely closed under a dual blockade, sharply limiting regional distillate exports.
  • US distillate inventories, including diesel and heating oil, rose by 1.502 million barrels in the final week of May.

Heating oil futures rebounded on Wednesday, rising near 3% to $3.64 per gallon after declining the previous session. The reversal followed a direct escalation in the US-Iran conflict. US Central Command confirmed self-defence strikes on Iranian targets at President Donald Trump's direction, citing the downing of a US helicopter that had been patrolling over the Strait of Hormuz as the trigger.

The strikes immediately restored the geopolitical risk premium that had briefly eased on Tuesday. Trump warned Iran of further military action if negotiations did not advance, reducing the credibility of any near-term diplomatic breakthrough. The fragile ceasefire that had offered a tentative path toward de-escalation is now under renewed pressure, and the prospect of a durable peace agreement capable of reopening the Strait has receded.

The Strait of Hormuz continues to operate far below normal capacity under a dual blockade maintained by both Iran and the United States. Distillate exports from the Gulf region, which supply Asian and European markets, remain severely constrained. Heating oil, a key refined product and benchmark for the broader distillate complex including diesel and jet fuel, is directly exposed to this supply restriction. Until the Strait reopens in a verified and sustained manner, the structural floor beneath distillate prices remains in place.

Distillate Inventory Build Offers Limited Relief

US distillate stockpiles, which include diesel and heating oil, rose by 1.502 million barrels in the final week of May. The build represents a modest improvement in supply at the downstream level and reflects a period in which refinery output temporarily exceeded consumption.

The gain provides limited comfort in the context of the broader supply picture. Distillate inventories had been under sustained pressure through the spring, and a single week of modest building does not materially alter the inventory trajectory heading into summer. With the Hormuz blockade curtailing regional supply flows and the SPR being drawn down repeatedly to offset crude shortfalls, the upstream constraints that feed the distillate supply chain remain significant.

Conclusion

Heating oil's near 3% rebound on June 10 reflected the immediate impact of fresh US strikes on Iran and the renewed threat to an already fragile ceasefire. The Strait of Hormuz dual blockade remains the dominant structural factor constraining distillate supply, and a 1.502 million barrel inventory build offers insufficient relief against that backdrop. The near-term outlook for heating oil and the broader distillate complex depends on whether the conflict moves toward resolution or further escalation.