Occidental Petroleum (NYSE:OXY) is an energy stock in Warren Buffett’s Berkshire Hathaway (NYSE:BRK.B) portfolio. Berkshire owns 248 million shares of OXY, indicating a 28% stake in the company, which is quite sizeable. I believe this Warren Buffett stock is a good buy in May 2024. I am bullish on OXY stock due to its acquisition of CrownRock, expanding chemicals business, and massive potential for low-carbon products. Berkshire has increased its stake in Occidental Petroleum since 2020, and it