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How Occidental Petroleum Captured Warren Buffett's Eye - WSJ
Warren Buffett's Berkshire Hathaway boosts its stake in Occidental Petroleum - MarketWatch
Warren Buffett's Berkshire Hathaway buys more Occidental Petroleum shares
Warren Buffett gets permission to buy up to half of Occidental Petroleum, boosting the shares
Stream episode Warren Buffett Investing Billions Into Occidental Petroleum With Prince Dykes by The Investor Show podcast | Listen online for free on SoundCloud
Berkshire Hathaway hikes Occidental Petroleum stake after new purchases (NYSE:OXY) | Seeking Alpha
Warren Buffett is still buying Occidental Petroleum, adding shares worth $1.5 billion
Warren Buffett Is Buying Shares of Occidental Petroleum Again -- but Another Stock Is Still Tops on His List | The Motley Fool
Warren Buffett's company has bet over $45 billion on the oil sector
Berkshire Hathaway cleared to buy up to 50% of Occidental Petroleum. - The New York Times