Notable Friday Option Activity: BLUE, SNBR, FC

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in bluebird bio Inc (BLUE), where a total volume of 5,086 contracts has been traded thus far today, a contract volume which is representative of approximately 508,600 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 52.8% of BLUE's average daily trading volume over the past month, of 963,665 shares..