This movement has driven the United States Oil Fund (NYSE: USO) down 18% in the past month alone.

这个变化使美国石油基金仅上个月就下跌18%。

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The United States Oil Fund ( USO) is the most liquid of all oil ETFs.

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The United States Oil Fund ETF (NYSE:USO) is set for a slightly higher open this morning.

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Oil prices continued their decline overnight, which we often track using the United States Oil Fund (NYSE:USO).

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