Key TakeawaysWarren Buffett's Berkshire Hathaway reduced its stake in Bank of America by 33.9 million shares over a three-day period last week.The selloff reduced the company's holdings by about 1.5billion,althoughitcontinuestohavenearly1billionsharesofthebankinitsportfolio.Berkshirecontinuestoownalmosta131.5 billion. ...