Why billionaire Warren Buffett is buying this oil stock - AOL

It makes perfect sense that Warren Buffett is aggressively buying this oil stock, says one energy strategist.

Warren Buffett is right to be devouring shares of oil giant Occidental Petroleum (OXY), says one long-time oil markets strategist. The billionaire investor's Berkshire Hathaway (BRK-A, BRK-B) scoope… [+1839 chars]

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