Global oil futures posted a fifth weekly loss as concerns about high global supply continued to weigh on prices. Prices have tumbled for months as supply growth has outpaced demand. Market participants are waiting to see whether the Organization of the Petroleum Exporting Countries, and specifically Saudi Arabia, will cut production to raise prices. OPEC’s next meeting is Nov. 27. “The Saudis certainly have more tolerance for sustained lower prices,” said Ed Kevelson, head of U.S. over-the-counter energy at brokerage Newedge U.S.A., which is owned by Société Générale. “The larger issue is, clearly, that people feel the Saudis are not going to go it alone.”