Why hedge-fund manager Bill Ackman says he dumped Berkshire Hathaway but held on to these winners MarketWatchWarren Buffett's Berkshire Hathaway loses billionaire Bill Ackman as an investor Business Insider2 Stocks You Can Still Buy Ridiculously Cheap Motley FoolBill Ackman Gives Up on Warren Buffett BloombergAckman dumps stake in Buffett’s Berkshire Hathaway Financial TimesView Full Coverage on Google News