Berkshire Hathaway Buys Occidental's OxyChem For $9.7 Billion—Buffett's Largest Deal In Years ForbesWarren Buffett's Berkshire Hathaway set to make its biggest deal in three years CNNBerkshire buys OxyChem, EV sales hit records, Amazon's grocery push and more in Morning Squawk CNBCA Berkshire Deal for Occidental Chemicals Unit Could Bring a Surprise Barron's