Speculators are the least bullish on U.S. crude oil prices in 16 months as refinery maintenance weakens demand at a time when Libya and Iraq are swelling global supplies. Futures dropped a fifth consecutive week after money managers reduced net-long positions in West Texas Intermediate, the U.S. benchmark grade, by 14 percent in the seven days ended Aug. 19, the Commodity Futures Trading Commission said. Prices sank below $95 on Aug. 19 for the first time in seven months as U.S. air strikes in Iraq helped reverse the advance of Islamic State fighters and the country’s Kurds work to increase oil shipments. Libyan output climbed last week and exports resumed from the port of Es Sider. Refineries in the U.S. typically schedule work for September and October, when demand for gasoline declines after the summer peak, and before consumption of heating fuel picks up during winter. “It’s hard not […]