Global oil markets crossed a threshold that had loomed over trading desks for weeks. Brent crude futures pushed past $100 a barrel in Asian trading on Wednesday, the first time the international benchmark has traded above that level since July 24, as a rapid escalation of hostilities across the Middle East threatened to further constrict crude flows from the world's most important producing region.
The November contract for Brent gained $2.15, or 2.2 percent, to reach $100.07 a barrel by mid-morning in Singapore. West Texas Intermediate, the U.S. benchmark, climbed $1.70, or 1.83 percent, to $94.73. The move extends a rally that has lifted Brent by roughly a quarter since early August, erasing the relief that followed a short-lived ceasefire agreement earlier in the summer.
The immediate catalyst was a wave of drone and missile strikes by Iran-backed Houthi forces on Saudi energy infrastructure, including facilities operated by state oil giant Saudi Aramco. The attacks set several installations ablaze across the southern cities of Abha, Khamis Mushait, Jazan and Najran, according to market sources, injuring dozens and forcing at least partial shutdowns. Coming on top of months of attacks on tankers and naval assets in the Persian Gulf, the strikes signal that the conflict is spreading beyond the waters around Iran and into the Arabian Peninsula itself.
The Saudi strikes matter because they threaten the workaround that traders had come to rely on. Since the U.S.-Iran war erupted on February 28, traffic through the Strait of Hormuz -- the narrow passage that normally carries about a fifth of the world's seaborne crude -- has been severely curtailed. Saudi Arabia responded by piping oil across the peninsula to Red Sea terminals, keeping exports flowing through the Bab el-Mandeb strait. Houthi attacks on western Saudi energy assets now put even that alternative route at risk.
The numbers illustrate how dramatically the waterway has been compromised. According to Rystad Energy's chief economist, Claudio Galimberti, roughly 8 million to 9 million barrels per day moved through Hormuz in the week before fighting resumed on August 30 -- double the prior week's volume. Since then, flows have collapsed to under 2 million barrels per day. Before the war, the strait routinely handled around 20 million barrels daily.
Vessel tracking data paints a similarly stark picture. On Monday, only nine commodity carriers transited the strait, compared with an average of roughly 30 in late June after a preliminary peace deal was signed, and nearly 100 in the days immediately preceding the conflict.
The deteriorating supply picture has forced a rapid reassessment among major banks. Goldman Sachs, Bank of America and HSBC have all raised their crude price targets in recent days. Bank of America analysts wrote in a note that if skirmishes curtailing oil flows persist through year-end, Brent could trade between $95 and $120 a barrel. A broader conflict that damages major energy infrastructure could spike prices as high as $150, they said.
HSBC's senior global oil and gas analyst, Kim Fustier, said the bank's new base case assumes a U.S.-Iran understanding will eventually emerge but remain vulnerable to repeated breakdowns. She projected that liquids flows through Hormuz would recover from the current level of about 6 million barrels a day to 8 million by year-end and 9.5 million by mid-2026, while raising the bank's Brent forecast for this year to $90 from $80.
"This leaves the market tighter for longer than we had previously assumed," Fustier wrote in a note to clients.
The supply losses are staggering in scale. The International Energy Agency said last month it expects global oil supply to fall by 4.3 million barrels per day this year, or about 4 percent. Middle Eastern crude shipments have dropped to roughly 11 million barrels per day from about 18 million before the conflict, even as producers in the United States, Canada and Guyana ramp up output.
The oil spike is landing at an especially delicate moment for monetary policy. The European Central Bank is widely expected to raise interest rates by a quarter point on Thursday, with the Iran war's inflationary effects cited as a key factor. The Bank of Japan is all but certain to hike the following week, and traders are split on whether the U.S. Federal Reserve will deliver another increase or hold steady at its meeting next Wednesday.
U.S. consumer price data due Friday will provide a crucial read on how energy costs are feeding through to broader inflation. The 10-year Treasury yield climbed to 4.805 percent on Tuesday, its highest closing level since October 2023, reflecting both the inflation concerns and the tightening expectations they have fueled.
"Progress on inflation is poised to reverse if geopolitical tensions don't simmer," said José Torres, senior economist at Interactive Brokers.
Priyanka Sachdeva, head of market insights at Phillip Nova, framed the psychological significance of the triple-digit level in stark terms. "$100 Brent should not be viewed simply as a psychological milestone. It is a warning level for the broader economy," she said.
The inflation transmission is already visible at U.S. gasoline pumps, where prices have risen in tandem with crude. That has pressured consumer discretionary stocks and industrial companies over the past month, even as energy shares have surged. The S&P 500 energy sector is up more than 40 percent this year, and Marathon Petroleum closed at an all-time high of $397.77 on Tuesday.
Asian equity markets reflected the unease on Wednesday. Japan's Nikkei slipped 0.2 percent, while Hong Kong's Hang Seng dropped 0.3 percent in early trading. A rebound in semiconductor and AI-related shares provided some offset, with South Korea's KOSPI jumping 1.2 percent and Taiwan's benchmark edging higher. U.S. stock futures pointed to a modest recovery after the S&P 500 fell 0.6 percent on Tuesday.
The yen continued its sharp rally, strengthening about 0.5 percent to 153.32 per dollar and edging back toward the nearly seven-month high of 152.89 hit in the prior session. The currency has surged roughly 4 percent over five sessions as traders position for faster Bank of Japan tightening and potential repatriation of Japanese capital. Gold gained 0.7 percent to around $4,385 an ounce, while bitcoin drifted higher to change hands near $79,000.
Chris Weston, head of research at Pepperstone, described the mood across major macro markets as one of indecision, with tight ranges and a general consolidation pattern. Brent crude, he wrote in a client note, is currently "one of the clearest real-time signals for sentiment," and $100 "now feels like a highly achievable level."
Whether the breach of $100 proves durable depends on two factors that are pulling in opposite directions. On the supply side, the conflict shows no sign of de-escalating. U.S. forces struck multiple Iranian oil tankers on Tuesday after Iran targeted a U.S. base in Jordan and attacked naval vessels. Iran has declared a maritime blockade zone around Hormuz and warned against further attacks on its energy infrastructure and tankers.
On the demand side, the picture is more nuanced. Estimated demand destruction is running near 3.5 million barrels per day, with China accounting for more than half, as high prices curb consumption. Non-OPEC producers are adding supply, with combined output from the United States, Canada and Guyana expected to rise by 1.4 million barrels per day this year. Some analysts argue these factors will keep Brent from sustaining a move far above $100.
OPEC+ added a supportive element over the weekend by holding October production targets at September levels rather than announcing another increase, with the next review scheduled for October 4. Refined product markets remain exceptionally tight, with Vitol's chief executive estimating that disruptions have removed roughly 2 million barrels per day of products from Russia and nearly another 2 million from the Middle East. Diesel supplies are expected to remain constrained through winter.
For now, the geopolitical premium embedded in crude prices appears unlikely to dissipate quickly. The last time Brent traded above $100 for an extended period was during the initial phase of the conflict in April, when it peaked at $126.41 before retreating to around $70 following the July ceasefire. That truce has since unraveled, and with Houthi attacks now striking at the heart of Saudi Arabia's export infrastructure, the market is pricing in a prolonged period of disruption.
Note: Prices as of mid-morning Asian trading on Wednesday. The 10-year yield reflects Tuesday's close.
The market's attention now turns to the official damage assessment from Saudi Aramco, expected imminently, which will clarify whether any production or export capacity has been curtailed. Any confirmation of significant damage would likely extend the rally, while a clean bill of health could trigger a sharp reversal of the risk premium. Either way, the days of oil trading comfortably below $90 appear to be over for now.
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