Morgan Stanley Warns: June Is the Deadline Before Oil Prices Break the Cycle

The disruption in the Strait of Hormuz has created the largest supply shock in global oil history. Flows through this critical chokepoint have collapsed from around 20 million barrels per day to a trickle, a collapse that has forced Gulf producers to cut output by at least 10 million barrels per day. The scale of this event is staggering. If the closure persists, the market will lose approximately 100 million barrels of supply each week. That is the equivalent of a major oil-producing nation vanishing from the market every week.

This shock arrives at a precarious moment. The global oil system is already under severe strain, with stockpiles being drawn down at a record pace. According to Morgan Stanley, inventories have fallen by about 4.8 million barrels a day over a recent period, a quarterly drawdown that far exceeds historical peaks. This rapid depletion is eating into the very buffer that protects against further shocks. As JPMorgan notes, the system reaches its "operational minimum" long before physical inventories hit zero, meaning the risk of extreme price spikes and shortages is growing ever-closer.

The primary macro risk here is a renewed surge in inflation. The IEA has already described this as a historic disruption, and the market is reacting with immediate price increases. With the buffer of spare capacity and strategic reserves being rapidly consumed, the system has less room to absorb this shock. A sustained closure could force a sharp, sustained move higher in oil prices, directly pressuring consumer prices and business costs. This would threaten the fragile growth trajectory that has been supported by relatively stable energy costs, potentially forcing a difficult trade-off between inflation control and economic expansion.

Price Implications and the Cycle's Breaking Point

The market's initial calm is a function of its buffers, not a sign of weakness. Despite the loss of nearly 1 billion barrels of oil supply, crude futures have yet to breach the peaks seen after Russia's 2022 invasion of Ukraine. This lag is the macro cycle's first line of defense. Analysts at Morgan Stanley point to two key factors that have cushioned the blow: a 3.8 million barrel-a-day increase in U.S. exports and a 5.5 million barrel-a-day cut in Chinese imports. Together, these moves have shielded the rest of the world from a massive portion of the tightness, buying time for diplomacy and market adjustment.

Yet the system is now in a race against time. The bank's analysis suggests that if the closure persists into late June or July, these national buffers will begin to weaken. The critical threshold is when the United States is forced to cut its own exports and China must reverse its import decline. At that point, the global market will have exhausted its immediate coping mechanisms, and the physical price must rise to rebalance supply and demand. As the bank notes, "a closure that runs into late June or even July is the regime in which Brent flat price has to do work it has so far been able to avoid."

This sets a clear price range for a sustained shock. In its base case, Morgan Stanley expects Brent to average $110 this quarter, falling to $90 by year-end. But its bullish scenario, which assumes a longer disruption, sees prices rising to between $130 and $150 a barrel. That range represents the breaking point for the current cycle. It is the level where the inflationary pressure becomes severe enough to force a reassessment of growth forecasts and monetary policy. For now, the market is betting on a June reopening that preserves the buffers. But the clock is ticking.

Demand, Growth, and the Dollar's Role

The cushioning effect from national trade flows is a double-edged sword. Higher U.S. crude exports and weaker Chinese imports have been the market's first line of defense, shielding the rest of the world from a massive portion of the tightness. As Morgan Stanley noted, these moves have shielded the rest of the world from 9.3 million barrel-a-day of tightness. But these buffers are not limitless. The bank warns that the United States' ability to sustain its export surge is becoming harder to assess and appears to be under increasing pressure. This sets up a clear dynamic: demand rationing is expected to persist as long as supply disruptions continue. This rationing acts as a brake on price, but it also directly chokes off global growth.

The dollar's role in this cycle is critical. A sharp price spike would likely strengthen the U.S. dollar, as safe-haven flows and the dollar's status as the global oil trade currency converge. A stronger dollar makes dollar-priced commodities more expensive for holders of other currencies, further pressuring global demand. This creates a feedback loop where higher oil prices dampen economic activity, which in turn can limit the growth in oil demand that would otherwise support prices. For now, the market is betting on a June reopening that preserves the buffers. But the clock is ticking, and the longer the closure, the more likely it is that the dollar will become a key tool for moderating the shock's impact on the global economy.

The bottom line is that the macro cycle is being tested on multiple fronts. The initial price calm is a function of buffers, not a sign of underlying strength. As those buffers weaken, the system must rely more on price to rebalance, which in turn risks triggering a dollar rally and a broader growth slowdown. The path forward hinges on diplomacy, but the market is already pricing in a scenario where the physical price must do the work that national trade flows have so far avoided.

Catalysts, Scenarios, and the Path to Normalization

The path back to normal is defined by a single, critical variable: the resumption of shipping flows through the Strait of Hormuz. The conflict that began in late February has already entered its third month, with the chokepoint closed since March. The market's current calm is a function of national buffers, not a permanent state. As long as these flows remain blocked, the system is in a race against time. The primary catalyst for stabilization is a geopolitical resolution that allows the strait to reopen, likely in June. If that happens, the market can begin to draw down its massive inventory of displaced barrels and normalize trade patterns.

The scenario hinges on the interplay between buffer depletion, price signals, and the geopolitical timeline. Morgan Stanley's analysis outlines the clear timeline: a reopening in June preserves the buffers, allowing the market to avoid a sharp price spike. But if the closure extends into late June or July, those buffers will begin to weaken. The United States, which has been exporting more crude to offset the Gulf supply loss, may be forced to cut its own exports. China, which has reduced imports, may need to reverse that decline. At that point, the physical price must rise to rebalance the market, as the national trade flows can no longer fully shield the world.

The bottom line is that the shock's duration will dictate its macroeconomic impact. Saudi Aramco's CEO has warned that if disruptions continue for several more weeks, the oil market would not return to normal conditions until 2027. That is the severe scenario. It implies a prolonged period of high prices, persistent inflationary pressure, and a significant drag on global growth as demand rationing continues. For now, the market is pricing in a June reopening. But the clock is ticking, and the longer the closure, the more likely it is that the physical price must do the work that national buffers have so far avoided.