Warren Buffett and Berkshire Hathaway (NYSE:BRK-A, NYSE:BRK-B) have now sold Bank of America (NYSE:BAC) for six consecutive trading days. The conglomerate’s last Form 4 revealed that it had sold 18.89 million shares between July 22 and July 24. These shares were sold at average prices ranging between $42.38 and$42.56 worth a total of $802.5 million.During the past six trading days, Berkshire has sold a total of 52.8 million shares of BAC stock worth$2.3 billion.Buffett’s sales contrast with his optimism a ...