California-free week, but crude did the moving: WTI finished down more than $4 to about $83.46 a barrel
WTI crude closed near $83.46 Thursday, off more than $4 on the week, after a run that swung from $86.57 down to $79.62 and back. Traders sold hard on reports that Iran, Oman and the US were closing in on a shipping arrangement through the Strait of Hormuz, then bought it back after Iran fired on a vessel near Oman and President Trump rejected terms tied to reviving the June ceasefire. Brent held near $88.68. For anyone buying wholesale, the takeaway is that your rack number is being set by whether tankers move, not by the sanctions headline.
The sanctions that didn't bite
Trump's "toughest sanctions in history" on Iran barely moved the tape. Brent stayed parked around $90 because the market already priced the politics and is now trading one thing: physical flows through Hormuz, where a fifth of the world's crude passes on a normal day. Saudi Aramco just sold about 4 million barrels of Arab Medium and Heavy to PetroChina for September loading at points outside Hormuz, the second such sale this month. More Gulf crude reaching buyers is why prompt futures leaked lower all week despite the war noise. If the strait stays open, crude could ease further.
OPEC coming apart
Venezuela is weighing whether to quit OPEC, and the idea has come up in talks with US officials since Trump ousted Maduro. Caracas leaving wouldn't dent supply much, but it follows the UAE's withdrawal and Iraq's public griping about its quota. A cartel that can't hold its members has a harder time defending a price. For US buyers that cuts both ways: less coordinated output support can mean cheaper crude, and less discipline can mean sharper swings.
The RFS exemption fight
A proposed round of small refinery exemptions could cost soybean farmers as much as $1 billion, according to KTVO. Every gallon a refiner is excused from blending is biodiesel demand that disappears, which pulls down soybean oil and can loosen RIN prices. Blenders and jobbers who trade RINs should watch the exemption count closely, because that's where the compliance math changes.
Inventories and the Russia wildcard
US crude stocks rose slightly last week, per Rigzone, adding to the softer tone. Overseas, Ukraine hit Russian refineries a record 21 times in the month, and fuel shortages there are spreading. That tightens diesel in some export markets even as US barrels sit comfortable.
What to watch
Whether the Hormuz shipping deal firms up or collapses again, the final EPA number on small refinery exemptions, and whether Venezuela actually files to leave OPEC. Any one of those could reset next week's rack.