Oil prices experienced a significant decline for the fourth straight session, primarily driven by improved traffic through the Strait of Hormuz and increased prospects for diplomatic resolutions regarding the Iran conflict. Brent crude futures decreased by 3.4% to close at $100.34 a barrel, while West Texas Intermediate (WTI) dropped 4.5% to $95.78 a barrel, marking their lowest closing prices since September 8.

Analysts from MUFG noted that the reduction in geopolitical risk premium in oil prices is due to smoother flows through Hormuz and new diplomatic initiatives. ING analysts also pointed to profit-taking after recent gains and hopes for constructive discussions at the upcoming U.N. General Assembly as factors improving market sentiment. Mizuho Securities USA commodity specialist Robert Yawger highlighted the possibility of a meeting between President Trump and Iranian President Pezeshkian at the United Nations as a key driver for the crude oil price drop, suggesting a higher chance of a deal.

Despite the overall easing of supply concerns, some challenges persist. Saudi export constraints and ongoing security risks in the Red Sea region still leave the market vulnerable to disruptions. Worries about prolonged interruptions to Saudi Arabia's East-West Pipeline have lessened, with reports suggesting a partial restart within days, although technical hurdles remain. Saudi Aramco has informed some European and Asian customers of potential delays for September and October deliveries. The rerouting of oil via the Persian Gulf has increased Saudi oil loadings from the region by nearly 2 million barrels a day to 2.46 million barrels a day this month, and ship-to-ship transfers off the Gulf of Oman have risen by 1.1 million barrels a day to 2.5 million barrels a day. However, facilities like Fujairah and Sohar are believed to be operating near capacity, and tanker availability is strained, leading to sharply increased freight rates.

Norbert Ruecker, head of economics at Julius Baer, stated that the broader crude market is not running out of oil, as increased flows through Hormuz and other routes, combined with lower demand, have kept the global market balanced since summer. He adjusted his three-month oil-price forecast down to $77.50 a barrel and maintained a 12-month forecast of $60 a barrel, although he still acknowledges a persistent premium in oil prices due to ongoing supply disruption risks. Meanwhile, tightness remains in fuel markets, with the U.S. national average price of diesel rising to a record $6.51 a gallon, compared to $3.696 a gallon a year prior, while diesel futures on the New York Mercantile Exchange fell 3.3% to $4.8895 a gallon. Security risks persist around Saudi Arabia, with recent Houthi attacks targeting Riyadh and jet-fuel facilities, and over a dozen Saudi-flagged vessels rerouting around the Cape of Good Hope, adding approximately $1 million to each voyage cost.