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Warren Buffett’s Berkshire Hathaway

announced Thursday it reached a deal to buy Occidental Petroleum’s

petrochemical unit, OxyChem, for $9.7 billion in cash.

The deal marks Berkshire’s largest since 2022, when it paid $11.6 billion for insurer Alleghany. It also comes at a time in which the conglomerate is sitting on $344 billion in cash, near a record for the company.