Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Teledyne Technologies Inc (TDY), where a total volume of 1,255 contracts has been traded thus far today, a contract volume which is representative of approximately 125,500 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 71.8% of TDY's average daily trading volume over the past month, of 174,840 shares..