Noteworthy Friday Option Activity: MKTO, ULTA, BIIB

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Marketo Inc (MKTO), where a total volume of 2,610 contracts has been traded thus far today, a contract volume which is representative of approximately 261,000 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 63.7% of MKTO's average daily trading volume over the past month, of 410,025 shares..