CNBC | Oil prices slump after large build in US crude stockpiles - CNBC.com CNBC Oil prices fell on Wednesday, with U.S. futures dipping below $70 a barrel for the first time in a month, after U.S. stockpiles rose by 6.5 million barrels, almost ... How High Can Oil Prices Go? How high will oil prices go? Iran is the biggest X factor - CNN Oil prices drop as data show US crude supplies up a fourth week in a row |