Warren Buffett is reportedly eyeing Berkshire Hathaway's biggest deal in three years
1. Berkshire Hathaway eyes $10 billion acquisition of Occidental's OxyChem unit. 2. Buffett's potential deal could be Berkshire's largest since 2022. 3. Berkshire holds a significant 28.2% stake in Occidental. 4. Buffett, 95, will remain Chairman but step down as CEO at 2025's end. 5. Occidental's stock dropped 1.8% despite the acquisition news.