U.S. crude oil inventories reported by the American Petroleum Institute (API) posted a sharp reversal in the latest weekly data, shifting from a drawdown to a sizeable build. According to figures updated on 30 June 2026, API weekly crude stocks rose by 6.072 million barrels, compared with the previous reading of a 0.765 million-barrel decline.
The move from a moderate draw to a substantial build signals a notable change in the short-term supply picture for the U.S. oil market. Traders and analysts will now look to see whether official government data corroborate this increase in inventories and what it might imply for near-term pricing, refining runs, and broader sentiment in the energy complex. For now, the latest API data point to a looser supply backdrop than in the prior week.
