Occidental Petroleum Corp. NYSE: OXY is down 13.4% in 2024 and over 20% in the last 12 months. However, that hasn’t seemed to bother Warren Buffett one bit. His Berkshire Hathaway Inc. NYSE: BRK.B portfolio has continued to buy OXY stock. As of this writing, Berkshire owns approximately 29% of Occidental, with regulatory approval to buy up to 50%.  Conversely, in the last quarter, Berkshire Hathaway sold 4.3 million shares of Chevron Corp. NYSE: CVX. However, since the fourth quarter of 2022, Buffett has so ...