Notable Friday Option Activity: INSP, ALAB, PRCT

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 2,343 contracts has been traded thus far today, a contract volume which is representative of approximately 234,300 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 51.4% of INSP's average daily trading volume over the past month, of 455,495 shares..