MarketWatch | Oil prices head lower as supply worries weigh MarketWatch Oil prices started 2016 with a surge on Monday morning in Asia as escalating tensions between Saudi Arabia and Iran stoked concerns about a possible supply disruption. But worries about oversupply loomed and China reported that its manufacturing sector ... OPEC December oil output slips, still near record Oil Prices Lower as Supply Glut Overshadows China Speculators Shorting Crude Oil Cash Out to End `Great Year' |