HOUSTON/DUBAI/WASHINGTON — Oil prices plunged Friday, April 17, as traders stripped out part of the geopolitical premium that had built into crude after Brent settled at $90.38 a barrel and U.S. West Texas Intermediate at $83.85, their sharpest daily declines since April 8. The selloff gathered speed as U.S.-Iran negotiators shifted toward a temporary memorandum that could keep the current ceasefire window from collapsing and allow more ships through Hormuz.
The tone changed after Tehran said commercial traffic could resume through the waterway for the remaining ceasefire period, though not on fully normal terms. According to Reuters, ships can pass only with coordination from Iran’s Islamic Revolutionary Guard Corps, while military vessels remain excluded, a sign that the market is trading on partial relief rather than full normality.
Even so, the first signs of real movement mattered. By Saturday, a convoy of tankers had begun leaving the Gulf, giving traders a concrete signal that some delayed cargoes may start moving again after weeks of disruption.
Why oil prices fell so fast
The Strait of Hormuz is where oil market fear becomes price. The passage between Iran and Oman is so central that the U.S. Energy Information Administration says about 20 million barrels per day moved through it in 2024, equal to roughly one-fifth of global petroleum liquids consumption. When the market believed those flows might stay constrained, crude surged. Once reopening looked plausible, that premium unwound just as quickly.
The speed of Friday’s move reflected how much risk had accumulated in the market while the strait was effectively restricted. A reopening, even on controlled terms, changes near-term supply expectations much faster than production policy or refinery demand.
Oil prices may still not be out of danger
None of this amounts to an all-clear. Shipping still requires Iranian oversight, a broader U.S.-Iran settlement has not been signed, and any ceasefire tied to a short diplomatic window can break down quickly. In practice, that means the latest drop in crude looks more like the removal of an extreme risk premium than a return to calm.
Oil prices have swung on Hormuz risks before
The pattern is familiar. In May 2021, oil fell more than 2% as diplomacy suggested Iranian supply could return to market. By October 2024, Brent had jumped more than $3 a barrel as traders feared a widening Middle East conflict could disrupt regional crude flows. Friday’s reversal fits the same logic: when Hormuz looks passable and Iranian barrels seem less constrained, oil prices fall; when the route looks vulnerable, they jump.
For now, the market is betting that reopened traffic and even a narrow interim understanding can do enough to ease the immediate supply shock. But until tankers are moving freely and diplomacy hardens into something durable, oil is likely to keep trading every headline out of the Gulf as if the next reversal is only one statement away.
