Noteworthy Monday Option Activity: NTRS, MAT, JPM

Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Northern Trust Corp (NTRS), where a total volume of 5,626 contracts has been traded thus far today, a contract volume which is representative of approximately 562,600 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 48.5% of NTRS's average daily trading volume over the past month, of 1.2 million shares..