Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Twitter Inc (NYSE: TWTR), where a total volume of 89,385 contracts has been traded thus far today, a contract volume which is representative of approximately 8.9 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 43.8% of TWTR’s average daily trading volume over the past month, of 20.4 million shares.