Oil prices dip after industry data shows U.S. crude stockpiles rising

Oil prices edged lower on Wednesday, after industry data showed U.S. crude inventories unexpectedly rose last week, signaling a potential hiccup in demand.

U.S. crude stocks rose by about 2.2 million barrels for the week ended Aug. 5, according to market sources citing American Petroleum Institute figures. Analysts had forecast a small 400,000-barrel drop in crude inventories.