U.S. crude oil inventories experienced their most significant decrease in eight months, according to data from the American Petroleum Institute (API). The latest figures indicate a substantial draw in crude stockpiles, alongside a continued reduction in distillate inventories. This trend marks the fourth consecutive week of falling crude inventories.
The API reported a draw of 9.10 million barrels for the week ending May 15, 2026. This contrasts with a draw of 2.19 million barrels in the preceding week. The latest report also shows a decline in distillate inventories, mirroring previous trends. However, motor gasoline stocks reportedly saw an increase during the same period.
Market Reaction Amidst Inventory Shifts
Despite the significant drop in crude inventories, U.S. oil futures experienced a slight dip. WTI crude futures traded around $64.72 a barrel on Tuesday, following the API's release. This followed a prior settlement of $64.98 a barrel, representing a 0.5% decrease. The official government inventory report from the Energy Information Administration (EIA) is scheduled for release on Wednesday.
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API data collection methods involve obtaining an exact copy of data submitted to the EIA. While the API survey is voluntary, it aims to provide reliable and accurate estimates for petroleum data, including crude oil and refined products. The API's Weekly Statistical Bulletin (WSB) is the source for this information.
Broader Context of U.S. Oil Landscape
The API's weekly inventory report is a key indicator for the oil market, offering insights into supply and demand dynamics. The data comes at a time when the United States is home to numerous significant players in the integrated oil and gas sector, as well as exploration and production companies. These entities are involved across various U.S. basins, including the Permian, Bakken, and Marcellus, and in different facets of the industry, from major producers to shale specialists and natural gas giants.
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Historically, U.S. API crude oil stock changes have shown considerable fluctuation. The average change from 2012 to May 2026 stands at approximately 0.17 million barrels. The period has seen both record highs, such as a 14.87 million barrel increase in January 2023, and record lows, including a 15.40 million barrel decrease in July 2023.
