Kraft Heinz faces fresh pressure as analysts warn Berkshire Hathaway could dump its 27.5% stake after Warren Buffett said he was "disappointed" with the firm's split plan. Shares fell 7% last week and are down 11% YTD. TD Cowen sees Berkshire's position as an overhang, while Gordon Haskett flagged demerger concerns. Retail mood on Stocktwits has eased from 'extremely bullish' to 'bullish.'