Noteworthy Thursday Option Activity: MNK, FDX, UNFI

Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Mallinckrodt plc (MNK), where a total of 11,982 contracts have traded so far, representing approximately 1.2 million underlying shares. That amounts to about 48.5% of MNK's average daily trading volume over the past month of 2.5 million shares..