Notable Wednesday Option Activity: ALNY, SPOT, EXC

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Alnylam Pharmaceuticals Inc (ALNY), where a total volume of 4,511 contracts has been traded thus far today, a contract volume which is representative of approximately 451,100 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 66.5% of ALNY's average daily trading volume over the past month, of 678,475 shares..