U.S. crude supplies rose 1.5M barrels in the week ended March 11, according to the API, vs. expectations for a 2.7M barrel build.
The EIA releases its estimate tomorrow.
Oil has moved higher since the news hit, now at $36.77 per barrel vs. $36.40 a few minutes ago, and a low earlier in the day at about $36.
USO +0.7% after hours
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