Brent crude just suffered its most devastating single-week decline on record, with the geopolitical risk premium almost entirely wiped out in the span of one week.
Just eight days earlier, on October 30, front-month Brent crude was still touching a high of $118, and the market broadly expected the Middle East situation to escalate further after the midterm elections. Instead, a Democratic sweep of Congress, diplomatic signals from Trump, and a flurry of mediation calls from Qatar landed one after another, sending Brent crude below $98 by the end of the week. According to Reuters, citing London Stock Exchange Group (LSEG) data going back to 1988, this was the largest single-week decline in dollar terms in Brent crude's history.
Hedge funds were the main actors in this selloff. According to an analysis of U.S. Commodity Futures Trading Commission (CFTC) positioning data by Robert Quinn, Managing Director in Goldman Sachs' FICC and Equities division, in his latest "Energy Futures" report, managed money net sold Brent crude positions worth as much as $6.6 billion between October 27 and November 3 — the seventh time in the past five years that weekly selling exceeded $6 billion — while oil prices fell 5.3% over the same period. Long liquidation accounted for $4.9 billion, roughly three-quarters of total selling, with newly established shorts playing only a supporting role. Notably, the CFTC positioning report's statistical window ends on November 3 (Tuesday), meaning the $6.6 billion figure does not yet include the 8.7% single-day plunge in Brent crude on Wednesday, election day. Next Friday's positioning report is expected to look even worse.
Longs Forced to Flee, Position Build-Up Planted the Seeds of Trouble
The ferocity of this selloff is closely tied to the prior build-up in positioning. Quinn's positioning charts show that managed money net longs had been rebuilt to roughly $28 billion in October, before plunging to about $19 billion by November 4, with Brent crude prices falling from just above $110 back to the high $90s within days. By comparison, when the Iran war premium was at its most frenzied in April of this year, the same group of funds held net longs exceeding $45 billion.
Commodity trading advisors (CTAs) were also deeply caught up in it. Going into this crash, CTAs held a considerable amount of crude oil longs. Goldman Sachs' systematic strategy team noted in a Friday report that trend-following strategies suffered a "major trend break" in early November, with a triple reversal occurring simultaneously — bonds rising, stocks falling, and crude oil declining. Its fixed-volatility trend strategy had accumulated a loss of 5.14% month-to-date through November 5, while petroleum products had been the largest long signal in that strategy's book at the end of October. Goldman's CTA momentum chart shows that short-term trend signals have fallen below the zero line — turning negative for the first time since August — triggering additional systematic selling. Medium- and long-term signals remain positive but are deteriorating at an accelerating pace. Even more worrisome, Goldman's CTA downside convexity analysis shows that stop-losses have been triggered, but given the speed of the price collapse, a large number of systematic sell orders may not yet have been fully executed.
Election Results Were the Final Straw That Broke the Longs
Before the election results came out, diplomatic signals had already begun to shake the market. According to Quinn's report, Trump was reported to favor negotiation over military strikes, and Iran's Supreme Leader Khamenei authorized the president to open dialogue, sending Brent crude lower on November 2, with a rebound attempt the following morning also failing. Then the midterm election results became the final straw that broke the longs. Quinn wrote: "A Democratic sweep triggered a narrative that Trump's agenda would be constrained, especially funding for overseas military operations and other foreign policy commitments." Brent crude plunged 8.7% in a single day on November 4, with open interest falling by $2.7 billion. The process displayed a typical structure of "active funds leading, trend followers passively following": active hedge funds sold first, and CTAs then joined in passively.
Historical Precedent: The Two Weeks After a Crash Remain the "Darkest Hour"
After a large-scale selloff, the market typically goes through a sustained period of digestion. Quinn reviewed history since last year's so-called "reciprocal tariff day" and found that after the previous three instances of similarly sized large-scale managed money selling in Brent crude, negative fund flows persisted for about two weeks, with the most typical case being after the U.S.-Iran Memorandum of Understanding (MOU) was signed in June 2026 — at that time, the market had already priced in expectations in May for a Hormuz Strait agreement, Brent crude recorded its largest monthly decline in six years, the MOU landed in June, but the war continued for another five months. However, there is also a powerful counterexample in history: from May 28 to June 4, 2024, hedge funds sold $7.9 billion of Brent crude due to OPEC's announcement that it would end "voluntary" production cuts, after which OPEC ministers publicly pushed back against the market reaction, and managed money net longs fully recovered immediately. Quinn pointed out that the prerequisite for this rapid reversal was that "policymakers stepped in to tell the market it was overreacting."
Some in the Options Market Have Already Started Buying Calls
Although the spot market is under pressure, the options market has already shown noteworthy signals. In his report, Quinn noted that Brent crude rebounded 3.9% on November 5-6, while at the same time, 3-month implied volatility rose, the 25-delta put-call skew narrowed, and call options were being bought again. This combination of signals indicates that some traders are already positioning for the return of the war premium. UBS's Dominic Ellis also issued a warning on Thursday, arguing that "fundamentals still provide support," pointing out that the destocking of nearly 700 million barrels in global inventories will not automatically reverse just because Congress changed hands, and saying the market has repeatedly priced in de-escalation too early over the past seven months. "I worry the same thing may now be happening again." On the physical market side, crude supply from the Gulf region has returned, and the Dubai benchmark fell into contango for the first time since July, giving shorts some support. But according to Reuters, citing UK Maritime Trade Operations (UKMTO) data, the frequency of attacks on oil tankers remains near historical peaks, and Iran's top security official insisted that the Strait of Hormuz will remain closed until Washington meets all seven of Tehran's conditions. In addition, Goldman Sachs' Rich Privorotsky pointed out that gold has become the inverse trade to crude oil — on the day Brent crude crashed, gold rose more than 3%. If the crude oil war premium returns, gold may correspondingly give back some of its gains.
"We Are Not at War" — But Late Friday, Action Was Taken Again
Just as the market was digesting all of the above, a new twist emerged. According to CCTV News, Trump spoke by phone with the Emir of Qatar on Friday to discuss a "comprehensive agreement to end the regional crisis." However, hours later, the White House confirmed a new round of "small-scale" strikes on air defense facilities on Iran's Qeshm Island — the first military action authorized by the president since the election. Trump said: "They built a small air defense device, and we destroyed it in about 15 minutes, maybe 5 minutes," adding that "we are not at war." For a market that had just sold $6.6 billion on the grounds of "war de-escalation," a weekend airstrike is precisely the kind of policy signal that could turn the previous liquidation into a short squeeze — just as the 2024 case showed. Next Friday's CFTC positioning report will capture Wednesday's crash and the CTA momentum flip, and the data is bound to look ugly. But structurally, positioning has been heavily flushed out, the options market is buying call options, and the "peace process" itself has landed alongside airstrikes. Brent crude's war premium was priced out in a week at the fastest dollar pace in history, and the speed at which it gets priced back in may be no slower.
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