JPMorgan Warns Global Oil Inventory Buffer Could Be Exhausted by June 2026

JPMorgan's commodities team, led by analyst Natasha Kaneva, published a series of notes in late April and early May 2026 warning that global oil inventories are being drawn down at a pace that could exhaust the usable buffer within weeks. The bank describes the situation as an illusion of plenty, where headline storage figures appear comfortable but the actual flexible volume available to the market is far smaller than the topline number suggests.

At the start of 2026, total global oil inventories stood at around 8.4 billion barrels, a level that on paper looked like a strong cushion. JPMorgan analysts argue that only a fraction of this volume is truly accessible to the market. Much of the global stockpile is locked into operational requirements such as minimum pipeline fill, refinery line packs, terminal working volumes and strategic reserves held under government control. According to the bank, only around 0.8 billion barrels were realistically available for market balancing at the start of the year.

Since late February 2026, when the conflict in the Strait of Hormuz triggered the largest oil supply disruption on record, that usable buffer has been eroding fast. Roughly 280 million barrels have already been drawn down. The remaining usable inventory of around 580 million barrels faces exhaustion as early as June 2026 if current drawdown rates continue.

The International Energy Agency confirmed in its April 2026 report that global observed oil inventories fell by 85 million barrels in March alone, with stocks outside the Middle East Gulf drawn down by a significant 205 million barrels, or 6.6 million barrels per day. Production shut-ins in the Middle East reached 9.1 million barrels per day in April, contributing to a projected inventory draw of 5.1 million barrels per day for Q2 2026.

JPMorgan analyst Natasha Kaneva defines the danger zone as the operational minimum, the level below which the physical oil system begins to lose functionality. For OECD commercial inventories, this threshold sits around 30 days of forward refining throughput cover. The market could theoretically run closer to 24 days, but doing so would create severe logistical stress and a breakdown in market liquidity.

Once inventories approach that threshold, stockpiles can no longer absorb supply shocks. Price becomes the rationing mechanism. The bank warns that this shift transforms volatility from episodic to structural, meaning that price swings stop being temporary spikes and instead become a persistent feature of the market.

In its latest note dated 11 May 2026, JPMorgan extends its analysis by warning that the next phase of the shock is shifting from crude oil to refined products. The bank notes that consumers do not buy crude oil, they buy fuels such as gasoline, diesel, jet fuel, LPG and naphtha. With refinery runs already constrained by insufficient crude availability, the bottleneck is moving downstream to the product market.

Crude shortages have already forced refiners across Asia and Europe to cut runs by 2.1 million barrels per day in March and 3.8 million barrels per day in April 2026. At the same time, the market has lost an estimated 4.7 million barrels per day of refined product exports from the Middle East itself. The combined effect is tightening not only crude balances but the availability of usable fuels.

JPMorgan analysts argue that a shock of this magnitude cannot be absorbed through the crude market alone. There is simply not enough elasticity on the crude side of the system. As a result, the adjustment is being pushed down the barrel, out of crude and into refined products. In that scenario, crude could plausibly stabilise around 100 dollars per barrel even as product cracks widen sharply.

The bank's view is that the next phase of the shock may look less like a classic crude spike and more like a refining and end-user fuel crunch. Brent crude reached 114.44 dollars per barrel on 4 May 2026 amid renewed tensions, then fell to 108.54 dollars on 5 May following a pause in the US Project Freedom naval escort initiative. Brent has remained volatile in a 86 to 126 dollar range over the past month.

The inventory drawdown follows a specific sequence. The market first taps oil already in transit or floating storage, which is the fastest to access. It then moves to commercial onshore inventories, followed by strategic petroleum reserves and finally operational minimums. As each layer is depleted, the cost of accessing additional barrels rises both economically and politically.

Major financial institutions remain divided on the outlook. Goldman Sachs, after adjusting near-term forecasts following a temporary ceasefire, maintains upside risks and projects potential for Brent crude to average 115 dollars per barrel in Q4 2026 under severe disruption scenarios. The US Energy Information Administration anticipates Brent prices to peak at 115 dollars per barrel in Q2 2026 before gradually falling, but forecasts prices to remain elevated, averaging 76 dollars per barrel in 2027 due to lingering supply uncertainties.

The risk highlighted by JPMorgan is not that the world runs out of oil, but that it runs low on working inventories. As the buffer weakens, the oil market could transition rapidly from apparent stability to tight supply, higher prices and increased volatility. The sense of comfort provided by headline inventory figures may turn out to be temporary, with import-dependent Asian economies facing the sharpest edge of demand destruction.