Notable Friday Option Activity: MTZ, KNF, STLD

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in MasTec Inc. (MTZ), where a total volume of 3,947 contracts has been traded thus far today, a contract volume which is representative of approximately 394,700 underlying shares (given that every 1 contract represents 100 underlying shares)..