Midday Mashup
Published
Map: The Gulf and Hormuz, marking Strait of Hormuz
The overnight flight-to-safety trade that opened the session has hardened into a full risk-off rotation, as confirmation that a civilian vessel, the M/V GFS Pride, was struck by an Iranian Revolutionary Guard Corps projectile and sank while under tow validates the morning's Strait of Hormuz fears. Houthi forces have renewed warnings that Saudi airspace is unsafe, explosions were reported near the presidential palace in Aden, and Iran has told Hezbollah to raise readiness for potential conflict, keeping the geopolitical premium firmly in place even as crude has jumped more than $2 to its highest level since September 21.
Policymakers are responding on two fronts. The International Energy Agency has agreed to complete release of an outstanding 100 million barrels and is pushing to add 20 million barrels of diesel, with total member releases since March set to exceed 400 million barrels, a sign that the diesel-shortage concerns flagged earlier this week are being taken seriously at the supply level. On data, September producer prices ran hot at 1.3% month over month versus 0.6% expected, while the Philadelphia Fed's manufacturing index slipped to 20.9 from 37.8, a soft read that complicates the Fed's inflation-growth balancing act ahead of the October meeting.
The other storyline is the semiconductor unwind, which has pushed the Philadelphia Semiconductor Index toward a seven-session loss of more than $2 trillion in value. Coherent Corp is down 6.6%, Dell Technologies off 8.4%, Vertiv down 6.1%, and Rocket Lab Corporation has fallen 9.4%, extending Wednesday's AI-infrastructure selloff. CoreWeave, after sliding to its lowest level since May 2025, reversed to a gain midday following Nvidia CEO Jensen Huang's comment that the company's business is improving and does not need backstopping, and after Meta released an open-weights AI model, Muse Spark Open, that runs on Apple hardware.
Elsewhere, Karman Holdings rose 10.2%, Pool Corp gained 8.3%, International Paper added 8.1%, The Trade Desk climbed 8.0% and CoStar Group rose 7.2%, while FMC Corp has plunged 33.6% on company-specific pressure. The net effect is a market still trading the Hormuz escalation and the AI-capex retrenchment simultaneously, with oil, yields and chip stocks all moving on separate but overlapping anxieties.