Berkshire Hathaway to buy Occidental's OxyChem for $9.7 billion, in Buffett's biggest deal in three years
1. Berkshire Hathaway buys Occidental's OxyChem for $9.7 billion. 2. Deal enhances Berkshire's petrochemical portfolio; expects to close in Q4. 3. Occidental plans to use proceeds to reduce debt and buy back stock. 4. Berkshire holds 28.2% stake in Occidental, enhancing its financial influence. 5. Buffett's succession planning continues as he steps down as CEO.