Core Insights - Berkshire Hathaway Inc. has signed an agreement to acquire Occidental Petroleum Corporation's petrochemical subsidiary, OxyChem, for approximately $9.7 billion in cash [1][2] - The transaction is expected to close in the fourth quarter of 2025 and will be Berkshire's largest deal since its $13.7 billion acquisition of Alleghany Corp. in 2022 [2] - OxyChem specializes in producing essential chemicals such as chlorine, sodium hydroxide, and PVC resins, generating roughly $5 billion in revenue over the past 12 months [3] Company Developments - Occidental Petroleum, 27% owned by Berkshire, is actively deleveraging after significant acquisitions, including a $55 billion purchase of Anadarko in 2019 [4] - The company currently has $24 billion in debt, down from nearly $49 billion post-Anadarko, and plans to use $6.5 billion from the OxyChem sale to further reduce this debt [4] - Occidental has executed nearly $4 billion in divestments since early 2024, indicating a strategic shift towards simplifying its portfolio and enhancing capital returns to shareholders [5] Industry Context - The acquisition of OxyChem marks a significant move in the petrochemical sector, as it is expected to be one of the largest standalone petrochemical transactions globally, valued near $10 billion [2] - The deal comes amid industry challenges, including oversupply and shrinking margins, leading Occidental to close a chapter in its decades-long chemicals business [6] - The acquisition strengthens Berkshire Hathaway's ties with Occidental, as the firm has been gradually increasing its equity stake in the company [5]