Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in nVent Electric PLC (NVT), where a total volume of 6,417 contracts has been traded thus far today, a contract volume which is representative of approximately 641,700 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 45.8% of NVT's average daily trading volume over the past month, of 1.4 million shares..