Notable Thursday Option Activity: CLF, MRTX, ATHN
October 18, 2018 at 15:18 PM EDT
Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Cleveland-Cliffs Inc (CLF), where a total volume of 47,686 contracts has been traded thus far today, a contract volume which is representative of approximately 4.8 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 57.2% of CLF's average daily trading volume over the past month, of 8.3 million shares..