From the archive · Sunday, October 4, 2026
Friday priced the G7 release as the end of the fuel squeeze. On Saturday the Houthis claimed a strike on an Aramco site in Riyadh — aimed at crude, the barrels stockpiles only lend.
A stockpile lends fuel. It cannot lend an oil field.
Stockpiles against strikes
**The barrels a stockpile cannot replace.** On Friday the G7 agreed to release up to 100 million barrels of crude and diesel from emergency stocks, and the market priced it as the end of the fuel squeeze: November diesel settled 3.0% lower and WTI 1.9% lower, while December Brent barely moved. On Saturday the Houthis said they had struck an Aramco facility in Riyadh with ballistic missiles and drones, retaliation, they said, for Saudi strikes on Sanaa. Smoke and fire were reported near the site. Neither Saudi authorities nor Aramco had confirmed an attack by Saturday night.
The two events act on different barrels. A release lends refined fuel for a season; every barrel drawn is bought back later, so it lowers prices while refineries recover without adding production. An IEA tally puts members' cumulative releases at 325 million barrels. A strike on Saudi plant threatens crude at source, which no stockpile replaces for long. Friday's trading had already separated them: the selling was in diesel, and crude held.
The physical record is the check on the claim. The engine counted 288 tanker departures from the Strait of Hormuz on Saturday, against a 30-day average of 264 and up from 186 on Friday. Had the attack touched exports, or had shipowners feared the terminals were next, Saturday is where hesitation would show first. It did not. The caveats are real — the series is noisy, the site is inland, and our Saudi terminal-level series has no readings this month — so this is a direction rather than a verdict.
One call is marked today. Our radar on 3 October ranked a Gulf attack on export plants fourth, at medium probability and severe impact, stable. The weekend brought the first claimed event of that kind; we move the trend to rising and keep the probability at medium until the flows move. OPEC meets today, and Brazil votes in a dead heat. Only the first can answer a threat to crude with crude.
*Methodology.* Prices are exchange settlements for Friday 2 October; no regulated market has traded since. Bitcoin's Saturday close is the day's last price in our series. Tanker departures are the engine's daily count of laden departures, compared with its own 30-day average; days with no coverage are excluded from interpretation rather than read as zero. Diesel is the November contract and Brent December; the diesel margin is diesel times 42 less Brent.