Notable Thursday Option Activity: MRNS, PTEN, BKNG

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Marinus Pharmaceuticals Inc (MRNS), where a total volume of 2,837 contracts has been traded thus far today, a contract volume which is representative of approximately 283,700 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 61.5% of MRNS's average daily trading volume over the past month, of 461,515 shares..