The escalating conflict between the US and Iran is profoundly reshaping the global crude oil market landscape. Hedge funds are making massive bullish bets on Brent crude at the fastest pace in nearly ten years, as disruptions to transit through the Strait of Hormuz and tightening fuel supplies are driving both oil prices and refining margins sharply higher.
According to a Bloomberg report, in the week ending July 14, asset managers increased their net-long positions in Brent crude by 75,996 contracts to 357,154 contracts. This marks the largest weekly increase since December 2016, with overall positioning rebounding sharply from a seven-month low touched the previous week. Concurrently, crude oil prices have surged over the past ten days to approximately a one-month high, following a cumulative decline of around 30% in the second quarter.
The immediate catalyst for this wave of positioning is the US resumption of military strikes against Iran. Iran subsequently launched retaliatory actions against Gulf neighbors and conducted maritime attacks on vessels transiting the Strait of Hormuz, severely constricting traffic through this critical chokepoint. Investor sentiment reversed dramatically within a single week—switching rapidly from prior concerns about oversupply to a scramble to cover short positions.
Rapid Position Reversal, Bulls Return to Market
The intensity of this positioning shift by hedge funds is historically rare. Citing weekly ICE Europe Futures and Options data, Bloomberg reports that the weekly increase in Brent crude long positions was the highest since December 2016, pulling overall holdings back from a seven-month low.
This shift reflects extreme volatility in market sentiment. Just a week prior, investors were preoccupied with potential oversupply. However, following the US restart of strikes against Iran, the market pivoted rapidly, with short-covering becoming the dominant force, driving a swift accumulation of long positions.
Hormuz Disruptions, Fuel Margins Hit Records
The conflict's impact on the global fuel market is equally pronounced. Iran's attacks on vessels in the Strait of Hormuz have significantly reduced traffic through the waterway over the past ten days, thereby tightening global supplies of refined products like diesel and gasoline. This has pushed global refinery profit margins to record highs.
According to Bloomberg data, funds also increased their net-long positions in New York Mercantile Exchange heating oil by 1,868 contracts, raising total holdings to 36,451 contracts—the highest level since the initial stages of the Iran war in March of this year. The weekly increase in Nymex diesel net-long positions also marked the largest gain since before the war's escalation in February.
Russian Exports Plunge, Adding to Supply Pressures
The supply tightness in fuel markets is not solely due to Middle East tensions. According to Bloomberg, Ukraine's months-long attacks on Russian refineries have led to a significant drop in Russia's refined product exports. Moscow's subsequent announcement of a ban on diesel exports has further exacerbated the tight global fuel supply situation.
The confluence of these two major supply shocks has placed particular pressure on the global diesel market. This also helps explain, to some extent, why refining margins have been able to surge to historical highs in a short period, attracting continued capital inflows into related long positions.
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