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In trading on Friday, oil & gas exploration & production shares were relative leaders, up on the day by about 4.1%. Leading the group were shares of Camac Energy (CAK), up about 21.1% and shares of Penn West Petroleum (PWE) up about 12.4% on the day.
Also showing relative strength are oil & gas refining & marketing shares, up on the day by about 2.5% as a group, led by Calumet Specialty Product Partners (CLMT), trading higher by about 5.4% and Imperial Oil Limited (IMO), trading higher by about 4.8% on Friday.
