Notable Tuesday Option Activity: ROK, CAH, DHR

Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Rockwell Automation, Inc. (ROK), where a total volume of 1,963 contracts has been traded thus far today, a contract volume which is representative of approximately 196,300 underlying shares (given that every 1 contract represents 100 underlying shares)..