West Texas Intermediate crude surged 4.26% to $74.45 a barrel on July 12, 2026, a $3.04 single-day gain that counts among the sharpest moves since 2020. Brent, the global benchmark, climbed 3.96% or $2.83 to $74.24. By the next trading session, WTI's front-month contract reached $78.13, having swung from a low of $73.69 to a high of $78.45 against Friday's close of $72.61.

This rally reversed months of steady decline. Brent had fallen below $72 a barrel by July 1 — its lowest level since the week before Iran's war began on February 28, 2026. Over that five-month stretch, crude had surrendered most of the "war premium" that drove prices higher in March and April. By late June, both WTI and Brent were down roughly 1% for the day, trading around $73 and $77 respectively.

However, physical benchmark prices tell a different story. The EIA's June average for Brent spot (actual barrels trading in the market, not futures contracts) came in at $85 a barrel — down $22 from May and down $32 from April's peak. By the week of July 6-10, Brent spot FOB had settled at $69.56. The gap between these physical prices and the subsequent futures spike suggests something more than a gradual re-evaluation of war risk.

Futures markets move on expectations, not just events. When traders drive contracts sharply higher after weeks of calm, they're typically repricing their view of structural supply constraints. The betting now appears to center on one question: whether the Strait of Hormuz — the waterway through which roughly one-third of global seaborne oil flows — will remain congested or return to normal transit conditions.

The historical record from the conflict's opening weeks supports that reading. The Brent-WTI spread (the price difference between the two benchmarks) peaked at $25 a barrel on March 31, 2026, then averaged $11 across March after starting the quarter near $4. In early April, Brent spot prices moved into extreme backwardation — meaning prompt barrels commanded a premium of more than $25 over contracts for future delivery. That pattern typically signals acute near-term supply concern rather than a longer-dated shortage.

The timing of this week's move — a near-4% jump after a month of steady spot-price decay from $85 toward the $69-70 range — doesn't fit a simple narrative of tensions easing gradually. A move this sharp arriving after extended calm suggests a specific reassessment rather than routine market positioning flow. Barchart data adds texture: the August WTI contract closed down 0.93% on Friday, before markets opened Sunday into Monday with a violent gap higher — the kind of gap futures desks associate with a genuine repricing of geopolitical risk.

What exactly triggered that repricing remains unclear from available reporting. No published sources cite a new strike, blockade, or policy announcement that day. Instead, the narrative framing in media coverage treats it as a pure market bet — traders adjusting their expectations about how long Strait disruption will persist, rather than responding to a documented supply event.

That distinction carries weight for traders running spread positions. A repricing driven by expected durability of disruption behaves differently in the options market than one triggered by a single, confirmed supply loss — particularly in how it affects volatility skew and the premium traders will pay for longer-dated protection in Brent-WTI relative value trades. For anyone marking a book against Friday's print, the source of the move shapes how much of it sticks.