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Berkshire Hathaway CEO Warren Buffett
Saul Loeb/AFP via Getty Images
Berkshire Hathaway
continued to add to its large stake in
Occidental Petroleum
in recent days and now holds a $7.2 billion interest in the big energy company, according to a filing late Wednesday.
Berkshire Hathaway (ticker: BRK/A, BRK/B) purchased 18.1 million shares from Monday through Wednesday to…