Oil extended its biggest monthly decline since May as concern over U.S.-China trade tensions outweighed signs that OPEC’s supply cuts are trimming stockpiles.
Futures fell 2.8% in New York, extending the month’s slide to almost 6%. Concerns about demand for swelling U.S. production have been stoked as China gets set to start taxing U.S. oil from Sunday. American oil explorers, even as they cut drilling to a 19-month low, are producing record volumes of crude.