Key Highlights

● WTI crude rose 2.85% to $104.91 a barrel in Friday's session.

● Reports say a senior US commander briefed Trump on renewed strike options.

● Crude is up 12.93% in October and 82.64% since the start of the year.

● US crude stocks fell 1.9 million barrels to 410.6 million barrels last week.

WTI crude oil rose 2.85% to US$104.91 a barrel in Friday's session on 30 October, moving within reach of the four-month high of US$105.83 set on 15 September as the threat of renewed US military action against Iran outweighed efforts at diplomacy. The jump matters to producers such as Exxon Mobil (NYSE:XOM), which holds its third-quarter Earnings Call today.

The gain of US$2.91 on the day leaves WTI up 1.55% on the week and 12.93% on the month, with a rise of 82.64% since the start of the year and 71.98% from a year ago. Brent, the international benchmark, rose 3.06% to US$114.19.

Military Options Against Diplomacy

Friday's rally followed reports that a senior US military commander had briefed President Donald Trump on options for renewed strikes against Iran, and that Trump has repeatedly threatened further military action. Tehran confirmed receipt of a letter from US Vice President JD Vance aimed at reviving peace negotiations, but signalled that it would not soften its position on ending the conflict.

The calendar adds pressure. Earlier reports said Washington had told Gulf states to prepare for a possible renewed campaign after the 3 November midterm elections. With the vote days away, the market is pricing the risk of an escalation rather than a settlement.

Why Supply Risk Is Back in the Price

The Strait of Hormuz is again at the centre of the story. Tensions around the waterway intensified after tanker incidents, and Iran's Revolutionary Guards said three tankers struck sea mines south of the strait. The channel was largely halted or restricted from March to May, a period in which WTI climbed sharply before falling to a close of US$69.63 on 24 June.

Other supply lines are under strain too. Ukrainian forces reportedly struck a Russian refinery in the Samara region, while Moscow launched another overnight attack against Ukraine. Regional crude exports have recovered to levels close to those before the war, so any new disruption would hit a market that had only just regained its footing.

US Stocks Keep Falling

The domestic picture supports prices. The Energy Information Administration reported that commercial crude stocks fell 1.9 million barrels to 410.6 million barrels in the week ended 23 October, against a forecast for a rise of 15,000 barrels. Stocks at Cushing, Oklahoma, the delivery point for the WTI contract, fell by 624,000 barrels, and net crude imports dropped by 796,000 barrels a day.

Fuel stocks pointed in different directions. Gasoline inventories rose by 3.9 million barrels to 209.2 million barrels, while distillates fell 1.5 million barrels to 102.8 million. Refinery utilisation slipped 0.6 percentage points to 92.8%.

What It Means for Producers and Refiners

Higher crude lifts Upstream revenue, which is why producers sit at the centre of the story. Exxon is an integrated producer and refiner, so its upstream earnings benefit from a month of crude near and above US$100, while its refining and chemicals margins depend on product prices relative to crude. The company, along with Chevron (NYSE:CVX), cancelled executive travel to next week's oil show in the United Arab Emirates because of security concerns. ConocoPhillips (NYSE:COP) is mainly an upstream explorer and producer, so its Revenue is more directly tied to the crude price.

For refiners the price is a cost. Valero Energy (NYSE:VLO) reported third-quarter net profit of US$6.828 billion and refining operating profit of US$8.782 billion on 22 October, with throughput near 3 million barrels a day. Its margins depend on the gap between product prices and crude, and today's moves show the difference: gasoline rose 3.01% and heating oil 2.59%, both close to crude's 2.85%.

Crude Watch: Hormuz, the Midterms and Exxon's Call

Exxon's earnings call today will show how producers and refiners see current conditions. The next political marker is the US midterm election on 3 November. The EIA publishes its next weekly petroleum report on Wednesday, with Cushing stocks the figure most closely tied to WTI.

Prices could climb further if talks Fail and the United States resumes military action, if attacks on Gulf infrastructure or shipping widen, or if more inventory draws appear. They could ease if negotiations restart and shipping risk fades.