Goldman's $130 Brent Scenario Shifts From Upside Risk to Active Forecast After Iran Closes Hormuz

Goldman Sachs cut its fourth-quarter 2026 Brent crude forecast to $80 per barrel on July 9, tying the call to one assumption: Persian Gulf oil exports return to pre-conflict levels by the end of July. That assumption collapsed three days later. Iran's Islamic Revolutionary Guard Corps declared the Strait of Hormuz "closed to vessel traffic until further notice" on Sunday July 12, after a third round of U.S. Central Command airstrikes hit Iran's southern coast.

Brent crude settled at $76.01 per barrel on Friday's ICE close, per OilPrice.com data with a one-day delay. WTI settled at $71.41 per barrel on the CME, up 4.7% on the week ending July 11. Both benchmarks closed before the IRGC's formal closure declaration.

Goldman's Own Model Now Points to $100-Plus Brent

Goldman strategist Daan Struyven spelled out the price sensitivity in his July 9 research note. For each month that Persian Gulf supply normalization is delayed past Goldman's end-of-July baseline, Brent's fair value for late 2026 rises by $10 per barrel. A closure extending through September implies Q4 Brent at $100. Extension through October implies $110. Closure through year-end reaches Goldman's own stated upside threshold of Brent above $130 per barrel.

Goldman had previously held a Q4 Brent target of $90, cutting to $80 as diplomacy appeared to progress. The bank also set a 2027 Brent average of $75 per barrel, assuming global market normalization follows. A multi-month Hormuz closure puts both the Q4 and 2027 figures at risk of upward revision.

Three Forecasters, Three Assumptions Now Under Stress

Three major forecasting houses built their outlooks on partial disruption, not a formal closure declaration. Goldman's $80 Q4 target requires Hormuz normalization by late July. Rystad Energy projected a 3.2 million barrel-per-day global surplus in 2027, conditional on Gulf oil flows recovering. UBS stated this week that OPEC+ output was already running below stated targets while disruptions persisted. All three models now require revision.

Saxo Bank commodity strategist Ole Hansen had anticipated OPEC+ accelerating its August production increases. The alliance confirmed that view on July 10 with its fifth consecutive 188,000-barrel-per-day output hike. That authorized capacity produces no incremental barrels for the market if tankers cannot load and transit the strait.

What Has Changed Since the July 10 OPEC+ Decision

Oil Authority reported 22 hours ago that Hormuz traffic had fallen to five daily transits, down from 130 pre-conflict, as OPEC+ voted its August increase. Since that article, the confrontation expanded. The third U.S. strike wave targeted Bushehr, Asalouyeh, Bandar Abbas, Bandar-e Dayyer, and the Sirik area on Iran's southern coast. Iran's IRGC then launched ballistic missiles toward U.S. military facilities in Jordan and Qatar, plus drone attacks on Kuwait, Bahrain, and Oman. The IRGC then declared the strait fully closed.

As of Sunday morning, tanker tracking services showed only two oil-products tankers approaching the strait. One crude carrier had gone dark on AIS tracking systems, suggesting it transited with its transponder disabled. The IRGC halted two commercial vessels that attempted transit after the closure announcement.

US Exports Show How Supply Is Already Rerouting

U.S. petroleum exports reached a record 13.6 million barrels per day in April 2026, up 15% from the previous record set in March, per the U.S. Energy Information Administration. The EIA linked the gain directly to global demand displacement caused by Hormuz disruptions. U.S. refineries processed 17.1 million barrels per day in the week ending June 19 at 96.1% capacity utilization. The domestic supply system was already running near full stretch before a formal closure was declared.

The Diplomatic Fork

Iranian Foreign Minister Abbas Araghchi traveled to Oman on Sunday for diplomatic discussions. A corridor agreement or partial reopening could pull Brent back toward Goldman's $80 base case quickly. A breakdown, or closure extending through August, would force markets to price in the $100-plus range Goldman's own model implies. The gap between those two scenarios is roughly $20-40 per barrel on Q4 Brent. Diplomats in Muscat, not OPEC+ quota tables, will determine which path the oil market takes next.