CNBC | BREAKING: Oil down more than 4% on China data, OPEC uncertainty CNBC Oil fell as much as 4 percent on Monday as weak economic data from China, the world's largest energy consumer, weighed on prices and an OPEC source played down talk of an emergency meeting to stem the decline. China's manufacturing sector ... Oil falls on China data and fading prospects of OPEC action MarketsHedge funds cut back on short oil positions Oil sags on China data, production-cut doubts |