Oil futures posted a gain for Friday’s session, but lost more than 5% for the week. “Flash service PMI reports from overseas were pretty good, and overseas flash manufacturing PMI reports weren’t terrible,” while U.S. flash PMI for both beat expectations, providing support for oil Friday, said Colin Cieszynski, chief market strategist at SIA Wealth Management. Most of the recent weakness for oil, however, “likely reflects ongoing concerns around global economic conditions and the potential impact on demand growth expectations,” said Robbie Fraser manager, global research & analytics at Schneider Electric. June West Texas…