Notable Wednesday Option Activity: INSP, ROKU, LULU

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Inspire Medical Systems Inc (INSP), where a total volume of 2,440 contracts has been traded thus far today, a contract volume which is representative of approximately 244,000 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 70.7% of INSP's average daily trading volume over the past month, of 345,165 shares..