Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in SVB Financial Group (SIVB), where a total volume of 2,340 contracts has been traded thus far today, a contract volume which is representative of approximately 234,000 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 67.5% of SIVB's average daily trading volume over the past month, of 346,765 shares..