International crude oil prices fell about 2% on September 11, driven primarily by concerns over potentially weakening US demand and fears of a global supply surplus.

The International Energy Agency (IEA) noted in its monthly report that global petroleum supply this year will increase more rapidly than anticipated due to OPEC+'s production plans. OPEC+ maintains its forecast of strong global oil demand growth for 2025 and 2026 and has decided, on September 7, to increase production quotas further starting in October.

West Texas Intermediate (WTI) crude for October delivery decreased by US$1.30 (2.0%), reaching US$62.37 per barrel on the New York Mercantile Exchange. Brent crude for November delivery fell by US$1.12 (1.7%), settling at US$66.37 per barrel.