Oil prices fell in volatile trade on Wednesday, posting their worst monthly performance since July 2016.
Strong U.S. demand for fuel helped offset a sixth straight weekly jump in American crude stockpiles and evidence of rising global supply, but oil prices fell late in the trading session.
U.S. light crude ended Wednesday's session down 86 cents, or 1.3 percent, at $65.31. The contract plunged 10.8 percent in October.
Benchmark Brent crude oil fell 44 cents at $75.47 a barrel, ending October down nearly 9 percent.
Both benchmarks were about $11 a barrel below four-year highs reached on Oct. 3 and saw their worst monthly performance since July 2016.