API Crude Oil Stock Change is the weekly change in United States crude stocks reported in the Weekly Statistical Bulletin (WSB), a trade survey. The publisher is the American Petroleum Institute, the national oil and gas trade association with over 600 members. It surveys refiners, terminals, pipelines and importers, covering about 90% of the industry, and estimates the rest without seasonal adjustment for calendar patterns.
It counts primary-storage crude at refineries and pipelines, including leases, oil at wells, but excluding the Strategic Petroleum Reserve, the emergency stockpile. The survey covers crude and five products with regional detail, and all figures are estimates of actual stocks and flows.
Each cycle covers one week ending on a fixed day, and release follows a fixed weekly rhythm in the afternoon. If a public holiday disrupts the schedule, release shifts by one day, and dates remain subject to change with updates on the publisher site. It reaches subscribers about 18 hours before the EIA, the government energy agency, by subscription through two authorized redistributors.
Each release shows this week, prior week and year-ago week with changes for crude, products, imports, refinery use, regional districts and supply balance. There is no weekly revision cycle, prior-year data stay unadjusted with finals in the annual, and the publisher gives no buy or sell signal.
Weekly change reflects supply additions against refinery demand and product flows.
| Date | Actual | Forecast | Surprise |
|---|---|---|---|
| Sep 29, 2026 | 1.02 | -1.90 | +2.92 |
| Sep 22, 2026 | 1.79 | -0.50 | +2.29 |
| Sep 15, 2026 | 7.14 | -1.80 | +8.94 |
| Sep 9, 2026 | -0.30 | -1.30 | +1.00 |
| Sep 1, 2026 | -2.60 | -0.80 | -1.80 |
| Aug 25, 2026 | 4.20 | 1.80 | +2.40 |
| Aug 18, 2026 | -3.28 | — | — |
| Aug 11, 2026 | 9.07 | -0.50 | +9.57 |
| Aug 4, 2026 | 2.69 | -2.00 | +4.69 |
| Jul 28, 2026 | 3.30 | -2.50 | +5.80 |
| Jul 21, 2026 | 2.60 | -1.50 | +4.10 |
| Jul 14, 2026 | -0.56 | -2.70 | +2.14 |
| Jul 7, 2026 | -0.40 | -1.50 | +1.10 |
| Jun 30, 2026 | -6.07 | -4.10 | -1.97 |
| Jun 23, 2026 | -0.77 | — | — |
| Jun 16, 2026 | -8.33 | -4.50 | -3.83 |
| Jun 9, 2026 | -9.12 | -3.40 | -5.72 |
| Jun 2, 2026 | -6.75 | -3.60 | -3.15 |
| May 27, 2026 | -2.80 | — | — |
| May 19, 2026 | -9.10 | -3.40 | -5.70 |
| May 12, 2026 | -2.19 | -1.65 | -0.54 |
| May 5, 2026 | -8.10 | -2.80 | -5.30 |
| Apr 28, 2026 | -1.79 | 0.30 | -2.09 |
| Apr 21, 2026 | -4.40 | -1.00 | -3.40 |
| Apr 14, 2026 | 6.10 | -1.30 | +7.40 |
| Apr 7, 2026 | 3.72 | — | — |
| Mar 31, 2026 | 10.26 | -1.30 | +11.56 |
| Mar 24, 2026 | 2.30 | -1.30 | +3.60 |
| Mar 17, 2026 | 6.60 | -0.60 | +7.20 |
| Mar 10, 2026 | -1.70 | 1.40 | -3.10 |
| Mar 3, 2026 | 5.60 | 2.19 | +3.41 |
| Feb 24, 2026 | 11.40 | 1.85 | +9.55 |
| Feb 18, 2026 | -0.61 | — | — |
| Feb 10, 2026 | 13.40 | — | — |
| Feb 3, 2026 | -11.10 | 0.70 | -11.80 |
| Jan 27, 2026 | -0.25 | 1.45 | -1.70 |
| Jan 20, 2026 | 3.04 | — | — |
| Jan 13, 2026 | 5.27 | -2.00 | +7.27 |
| Jan 6, 2026 | -2.80 | 1.20 | -4.00 |
| Dec 30, 2025 | 1.70 | — | — |
| Dec 23, 2025 | 2.40 | — | — |
| Dec 16, 2025 | -9.30 | -2.20 | -7.10 |
| Dec 9, 2025 | -4.80 | -1.70 | -3.10 |
| Dec 2, 2025 | -2.48 | — | — |
| Nov 25, 2025 | -1.90 | — | — |
| Nov 18, 2025 | 4.40 | — | — |
| Nov 12, 2025 | 1.30 | 1.70 | -0.40 |
| Nov 4, 2025 | 6.50 | -2.40 | +8.90 |
| Oct 28, 2025 | -4.00 | -2.90 | -1.10 |
| Oct 21, 2025 | -2.98 | — | — |
| Date | First print | Current | Revision |
|---|---|---|---|
| Jul 14, 2026 | -0.06 | -0.56 | -0.51 ↓ |
For example, 432000 minus 424000 equals 8000 thousand barrels, an 8.0-million-barrel build.
Key point: The API number is not the official Weekly Petroleum Status Report government figure. It rarely matches EIA exactly because samples and estimation differ, creating noise, so verify against EIA monthly definitive data.
