
Occidental Petroleum Co. (NYSE: OXY) is known for being one of the largest oil and gas producers in the United States, as well as being Warren Buffet’s favorite stock in the energy sector based on his Berkshire Hathaway Inc. (NYSE: BRK.A) (NYSE: BRK.B) cumulative holdings of 28.2% ownership in the company.
Occidental is the largest oil and gas producer in the Permian Basin, located in West Texas. In the Permian, Occidental competes with energy sector giants Exxon Mobil Co. (NYSE: XOM) and Chevron Co. (NYSE: CVX).