Mallinckrodt promoted to the 500 club

|About: Mallinckrodt PLC (MNK)|By:, SA News Editor

S&P MidCap 400 constituent Mallinckrodt (MNK +1.8%) will become the newest member of the S&P 500 after the close of trading on Monday, August 18.

Shares are up 2% AH on modest volume.