Warren Buffett took Occidental CEO ‘to the cleaners,’ says Carl Icahn By: MarketWatch July 22, 2019 at 21:44 PM EDT Safe to say, Carl Icahn is not a fan of Occidental Petroleum Corp.’s effort to buy Anadarko Petroleum Corp. Read More >> Related Stocks: Anadarko Petroleum Berkshire Hathaway Chevron Corp Occidental Petroleum