Billionaire investor Warren Buffett has dumped more than 3billionworthofsharesinBankofAmericaoverthepastweeks, takingprofitsafterabigrun−upinthesecond−largestUSlender’sstockprice.The93−year−oldBuffett,dubbed‘theSageofOhama’,disposedof18.4millionofthebank’ssharesfor767 million between July 25 and 29, according to a Monday night regulatory filing.In all, his investment conglomerate, Berkshire Hathaway, has sold 71.2 million Bank of America shares for $3.05 billion si ...