BRIEF-Mallinckrodt to replace Rowan in S&P 500

Thu Aug 14, 2014 5:22pm EDT

Aug 14 (Reuters) - * S&P Dow jones indices says Mallinckrodt Plc to replace Rowan cos

in S&P 500 * S&P Dow jones indices says Rowan to replace Mallinckrodt in S&P midcap 400 * S&P Dow jones indices says changes to be made after close of trading on

August 18