Key TakeawaysWarren Buffett's Berkshire Hathaway sold off more shares of Bank of America, according to a regulatory filing.This latest sales on Friday, Monday, and Tuesday totaled 5.8 million shares valued at about $228.7 million.Bank of America Chief Executive Officer (CEO) Brian Moynihan called Buffett "a great shareholder." Bank of America (BofA) (BAC) shares lost ground Wednesday after news that Warren Buffett's Berkshire Hathaway (BRK.A)(BRK.B) again reduced its stake in the bank.  In a regulatory fili ...