Noteworthy Thursday Option Activity: PACB, DASH, MRTX

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Pacific Biosciences of California Inc (PACB), where a total volume of 30,151 contracts has been traded thus far today, a contract volume which is representative of approximately 3.0 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 193.5% of PACB's average daily trading volume over the past month, of 1.6 million shares..