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PetroChina (PTR -1.4%) slips despite being upgraded to Buy from Hold by Deutsche Bank's David...
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Wednesday, May 16, 2012, 12:48 PM ETPetroChina (PTR -1.4%) slips despite being upgraded to Buy from Hold by Deutsche Bank's David Hurd earlier today. Hurd says that PTR's gas business is bottoming, refining is showing signs of improvement and chemicals have already priced in a weak global economy.
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