Author: Zhao Ying, Wall Street News
The escalation of the U.S.-Iran conflict is profoundly reshaping the global crude oil market landscape. Hedge funds are making aggressive bets on rising Brent crude oil prices at the fastest pace in nearly a decade. Disruptions to transit through the Strait of Hormuz and tightening fuel supplies are driving both oil prices and refining margins higher.
According to Bloomberg, in the week ending July 14, asset management firms increased their net long positions in Brent crude by 75,996 contracts to 357,154 contracts, marking the largest weekly increase since December 2016 and sharply rebounding overall positioning from a seven-month low reached the previous week. Meanwhile, crude oil prices have surged over the past 10 days to around a one-month high, following a cumulative decline of approximately 30% in the second quarter.
The immediate trigger for this wave of position-building is the U.S. resumption of military strikes against Iran. Iran subsequently retaliated against its Gulf neighbors and launched maritime attacks on ships transiting the Strait of Hormuz, severely reducing traffic through this critical chokepoint. Investor sentiment reversed dramatically within a single week—shifting from previous concerns about oversupply to a scramble to cover short positions.
Positions Reverse Sharply, Longs Return to Market
The intensity of this hedge fund positioning spree is historically rare. According to Bloomberg, citing ICE Europe weekly futures and options data, the single-week increase in Brent crude long positions was the highest since December 2016, pulling overall positioning back from a seven-month low.
This shift reflects the extreme volatility in market sentiment. Just a week earlier, investors were still worried about potential oversupply. However, with the U.S. restarting strikes against Iran, the market pivoted rapidly. Short-covering became the dominant force, driving a rapid accumulation of long positions.
Hormuz Disruption Fuels Record Refining Margins
The conflict's impact on the global fuel market is equally significant. Iran's attacks on vessels transiting the Strait of Hormuz have significantly reduced traffic through the waterway over the past 10 days, tightening global supplies of refined products like diesel and gasoline, and pushing global refinery profit margins to historic highs.
According to Bloomberg data, funds simultaneously increased net long positions in NYMEX heating oil by 1,868 contracts, raising total positioning to 36,451 contracts, the highest level since the initial outbreak of the Iran war in March this year. The weekly increase in Nymex diesel net long positions also marked the largest gain since before the war erupted in February.
Plummeting Russian Exports Worsen Supply Pressure
The tightness in the fuel market is not solely due to the Middle East situation. According to Bloomberg, months of Ukrainian attacks on Russian refineries have led to a sharp drop in Russian refined product exports. Moscow subsequently announced a ban on diesel exports, further exacerbating the tight supply situation in the global fuel market.
The combination of these two supply shocks has placed particular pressure on the global diesel market. This also helps explain why refining margins have soared to record highs in such a short period, attracting continued fund inflows into related long positions.
