OMAHA, Neb.—Warren Buffett’s company picked up another $368 million worth of Occidental Petroleum stock this week to give it control of nearly 21 percent of the oil producer.
These are the first purchases Berkshire Hathaway has made since regulators gave it approval last month to buy up to 50 percent of Occidental, but since February Buffett has been consistently buying shares of the Houston-based company any time they drop below $60 apiece.
