Oil Futures End Slightly Lower After Rise In U.S. Rig Count

By Markets MarketWatch Pulse

Oil futures ended slightly lower Friday, paring losses but remaining in negative territory after data showed the number of U.S. oil rigs rose for a sixth straight week. September West Texas Intermediate crude futures fell 13 cents, or 0.3%, to end at $41.80 a barrel. For the week, the U.S. crude benchmark rose 0.5%.

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