Warren Buffett, known as the "Oracle of Omaha," recently sold a portion of Berkshire Hathaway's (BRK.A) holdings in Bank of America (BAC) . Previously, Bank of America was Berkshire’s second-largest position after Apple (AAPL) , but Buffett has reduced his stake.Buffett sold over $9.6 billion worth of Bank of America stock during the third quarter and an additional $140 million in the first two days of October, per a Motley Fool article, as quoted on Yahoo Finance. In fact, Buffett's been a net seller of st ...