Warren Buffett’s Berkshire Hathaway (NYSE:BRK.A) (NYSE:BRK.B) has again increased its stake in Occidental Petroleum (OXY), bringing it to ...

Apple (NASDAQ: AAPL) has been one of Warren Buffett and Berkshire Hathaway's (NYSE: BRK.A) (NYSE: BRK.B) most profitable and ...

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Berkshire Hathaway Inc is engaged in the financial services domain. Its core activity includes provision of insurance services.