U.S. API Crude Oil Stock Build Slows, Signaling Softer Supply Overhang

The latest data from the American Petroleum Institute (API) show that U.S. crude oil inventories continued to rise, but at a slower pace than in the prior reading, potentially easing concerns over a rapid build-up in supplies.

For the week ending prior to 29 September 2026, API crude oil stockpiles increased by 1.019 million barrels, down from a previous build of 1.786 million barrels. While inventories are still growing, the moderation in the pace of the increase could be interpreted by markets as an early sign of improving balance between supply and demand.

The updated figures, released on 29 September 2026, will be closely watched by traders and analysts ahead of official government inventory data, as they reassess short-term price dynamics and the strength of U.S. crude demand heading into the next reporting period.