Occidental Petroleum (OXY -1.59%) is known for being a top portfolio holding of Warren Buffett's Berkshire Hathaway. But investors who have been paying attention to the oil patch for a while may also know it as one of the more aggressive exploration and production (E&P) companies in the U.S.CEO Vicki Hollub has a reputation for fearlessly targeting acquisitions and ramping up fossil fuel production. Oxy outbid Chevron (CVX -0.41%) in 2019 to acquire Anadarko Petroleum, a move that initially backfired on it ...