Brent nears $110 as Hormuz attacks and Houthi strikes on Saudi Arabia escalate

Brent closed at $109.86 on October 16 after touching $110, as vessel attacks in the Strait of Hormuz and Houthi strikes on Saudi Arabia added to a supply squeeze that has built since February.

What happened

Brent crude touched $110 per barrel on Friday, October 16, and closed up 3.7% at $109.86. Markets were pricing escalation in the Strait of Hormuz, continued Houthi missile and drone attacks on Saudi Arabia, and Ukraine's pledge to keep striking Russian refineries [1]. WTI settled at $101.41, up 3.5% on the day and more than 10% for the week [1].

Shipping in the strait remains the central problem. The maritime security body UKMTO confirmed at least 12 attacks in the week to October 16. It warned that reporting is incomplete because many attacked ships decline to report [2][3]. Two vessels were reportedly struck by naval mines during the week [3]. On October 17, Iran's Revolutionary Guards said a supertanker carrying more than two million barrels of crude caught fire in the strait after hitting a mine. They alleged it was transiting illegally with its tracking switched off and with U.S. support [4].

The United States and Iran give conflicting accounts of who controls the waterway. CENTCOM says 400 ships and 100 million barrels transited in the past week and blames Iranian Guards' projectiles rather than mines. Iran points to mines and says passage requires coordination with its Persian Gulf Strait Authority [2][3]. Oil flow through Hormuz was about 11.6 million barrels per day, against a pre-war baseline of 17.1 million [3].

Saudi forces reported intercepting missiles over the Red Sea and destroying drones near Riyadh. Earlier Houthi strikes hit Aramco facilities in Dhahran and Riyadh's international airport on October 10, killing 12 and injuring more than 300 [1].

FinUties' news monitor logged 42 reports on this story from 12 outlets in recent days, and 108 earlier related reports going back to January 13.

How we got here

In late February, Tehran seized control of the chokepoint, through which roughly one-fifth of global oil consumption normally flows [4]. Shortly before that, on February 25, Saudi Arabia had begun raising output as a contingency. Its crude shipments reached 7.3 million bpd in the first 24 days of February, and spare capacity was cited at roughly 2.4 million bpd [5].

By May 11, Aramco's chief executive, Amin Nasser, warned that markets might not normalize until 2027 if the strait stayed closed beyond mid-June. He cited only two to five daily transits against about 70 before the war, more than 600 stranded tankers and a weekly supply loss of 100 million barrels [6].

A tentative U.S.-Iran ceasefire had collapsed by July 14. U.S. gasoline then rose for the first time since May, to $3.8590 per gallon, and crude rallied roughly 15% in a week [7]. That day, President Donald Trump's threat of a 20% fee on Hormuz cargo accelerated the search for bypass routes. Saudi Arabia was diverting roughly 4 million bpd through its East-West Petroline to Yanbu. Analysts noted that Yanbu cargoes must pass the Bab el-Mandeb chokepoint, which is exposed to Houthi attacks [8].

In mid-August, Brent was near $90, fading to about $87 as talks stalled. Jefferies pointed to diesel and gasoline margins far above prior highs [9]. On August 19, traders were repricing toward a prolonged crisis, with Hormuz tanker flows described as roughly 2 million barrels daily against about 18 million before the war [10].

On September 15, drone attacks reportedly disabled the East-West route, threatening roughly 4 million bpd of Yanbu exports. Market buffers were already thin, including a historically low U.S. strategic reserve [11]. On September 22, JPMorgan's commodity research team said it lacked a baseline endgame model for the first time since the conflict began. U.S. red lines it had assumed, including $100 oil, had been crossed [12]. Diesel stood at $6.31 per gallon with record-low inventories [12].

On October 3, G7 leaders agreed to release 100 million barrels of crude and diesel over four months through the IEA. Brent briefly dipped below $100 and then traded around $102 [13]. By October 16 it had closed at $109.86 [1].

Why it matters for markets

The move shows that emergency stock releases have not removed the war premium. By October 17, the IEA was releasing more than 20 million barrels of diesel from collective stocks, with total releases possibly reaching 50 million barrels [14]. Even so, ICE Brent for January 2027 was near $102.59 per barrel, against under $70 in December 2025 [14]. That suggests markets now price tight supply through 2027 rather than a quick resolution [14].

Diesel is the most exposed product. Middle East refinery damage, Ukrainian strikes on Russian refineries and thin inventories could keep refined-product prices elevated and volatile [14][15][12]. Higher-for-longer energy costs could weigh on growth and lift inflation [14].

Rates and currencies are moving in a way consistent with that pressure, though causation is not established. The US 10-year yield was 5.1% on October 15, against 4.94% on September 17, and the 2-year was 4.77% against 4.67% [16][17]. The dollar was at 158.34 yen on October 9, against 153.71 on September 11 [18]. It was at 1.1259 per euro on October 2, against 1.1618 on September 4 [19].

What to watch

• Hormuz flows and incidents. Diplomatic channels via Pakistan and Qatar remain active, but no breakthrough is expected. Iran has vowed to continue strikes [2]. Whether transit stays near 11.6 million bpd could set the direction for crude [3].
• U.S. policy after November 3. Reported U.S. planning for larger military options after the midterms, and expectations of escalation after November 3, are a risk marker [2][3].
• Weekend policy tests. Two Trump choices are in focus. One is whether to keep U.S. force out of the Saudi–Houthi fight. The other is the October 18 deadline under the new Russia sanctions law, which pits licensed Russian diesel against potential duties of up to 500% [20].
• Red Sea and Saudi exports. Houthi pressure on Bab al-Mandeb and on Saudi infrastructure matters because Yanbu is a key bypass route [3][8].
• Stock releases and diesel. The G7 release runs over four months [13]. It is not yet known whether it will be enough ahead of winter, when diesel shortages are expected to worsen [10].
• Longer-term shifts. Rystad Energy projects that global import dependence will peak in 2034, as security concerns accelerate electrification. It also points to near-term stress from Hormuz disruption and record U.S. diesel margins [21].

Sources

1. US Top News and Analysis: Brent oil touches $110 as Iran escalates Hormuz attacks, Ukraine vows to hit Russian refineries, 16 Oct 2026
2. Al Jazeera: US and Iran both claim control of Strait of Hormuz amid attacks on vessels, 17 Oct 2026
3. Al Jazeera: US and Iran both claim control of Strait of Hormuz amid attacks on vessels, 17 Oct 2026
4. World News: Latest International News & Updates | The Hindu: Oil tanker on fire after hitting mine in Hormuz: Iran's Guards, 17 Oct 2026
5. Oilprice.com: Saudi Arabia Boosting Oil Output In Anticipation of U.S. Attacks On Iran, 25 Feb 2026
6. US Top News and Analysis: Saudi Aramco CEO says oil market won't normalize until 2027 if Hormuz disruption persists, 11 May 2026
7. Oilprice.com: U.S. Gasoline Prices Rise for First Time Since May as Iran Ceasefire Collapses, 14 Jul 2026
8. US Top News and Analysis: Is Hormuz open? Trump's toll threat intensifies rush to bypass the Strait altogether, 14 Jul 2026
9. Oilprice.com: Jefferies: Diesel Cracks Reveal the Real Oil Market Squeeze, 13 Aug 2026
10. Oilprice.com: Hope Fades, Traders Brace for Extended Oil, LNG Squeeze, 19 Aug 2026
11. Oilprice.com: Saudi Pipeline Outage Hits an Oil Market Running Out of Buffers, 15 Sep 2026
12. US Top News and Analysis: Sullivan: Wall Street admits it doesn't know where oil is headed. There's one stock they do agree on, 22 Sep 2026
13. Al Jazeera: G7 to release 100 million barrels of oil and diesel, will it curb prices?, 03 Oct 2026
14. Oilprice.com: Oil Prices Stay High as War Keeps Supply Tight Into 2027, 17 Oct 2026
15. Oilprice.com: Oil Prices Are Stuck at $105 as Geopolitical Risks Mount, 16 Oct 2026
16. Federal Reserve H.15: US 2-year Treasury yield (H.15), 15 Oct 2026
17. Federal Reserve H.15: US 10-year Treasury yield (H.15), 15 Oct 2026
18. FRED (Federal Reserve Bank of St. Louis): Japanese yen per US dollar (FRED DEXJPUS), 09 Oct 2026
19. FRED (Federal Reserve Bank of St. Louis): US dollars per euro (FRED DEXUSEU), 02 Oct 2026
20. Oilprice.com: Trump's Oil Price Strategy Faces Two Major Tests This Weekend, 16 Oct 2026
21. Oilprice.com: Global Energy Import Dependence Set to Peak by 2034, Rystad Says, 16 Oct 2026

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Provenance

• Study: event-desk-20261018-brent-nears-110-as-hormuz-attacks-and-houthi-strikes-on-saud (08c069c7-eefb-40fb-a9c9-3ba9bf3284c8)
• Author: FinUties Research
• Approved by: FinUties Research at 2026-10-18T13:54:05.908367Z
• Kind: event brief (news sources, not a FinUties dataset study)
• Cited sources: 21 from 6 outlets, all licensed for public use

• Earlier related events cited from 2026-02-25

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