CNBC | Oil seesaws as output freeze uncertainty weighs CNBC Oil prices wobbled between positive and negative territory on Monday as the market digested news of a modest rise in U.S. drilling activity and uncertainty lingered over a meeting of the world's major exporters. U.S. energy firms last week added one ... Oil Prices Lower as Investors Take Profit Oil prices edge up from day's lows; supply freeze talks in focus Oil prices extend losses after US rig count rises for first time in 13 weeks |