Occidental Petroleum Corp (NYSE:OXY) is near the bottom of the New York Stock Exchange (NYSE) today, after Warren Buffet's Berkshire Hathaway (BRK) shook up Wall Street with a $9.7 billion all-cash deal to buy OxyChem, the company's chemical business. Berkshire holds a 28.2$44.77, reversing premarket gains and now testing its 80-day moving average. The shares -- down 9.5% in 2025 and 16.4% year over year -- are in danger of b ...