Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Enphase Energy Inc. (Symbol: ENPH), where a total volume of 33,199 contracts has been traded thus far today, a contract volume which is representative of approximately 3.3 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 47.8% of ENPH's average daily trading volume over the past month, of 6.9 million shares. Particularly high ...