Warren Buffett Sold Delta Airlines Stock for a Loss. Should You? -- my article for @investorplace https://t.co/BKKhwYIajZ $DAL $UAL $AAL #WarrenBuffett $SPY $QQQ $DJIA $DIA #stockmarket #investing #finance #stocks #gold #silver $SLV $GLD $AAPL $TSLA $AMZN $NFLX $INTC #economy $BA