Notable Monday Option Activity: GH, ROOT, GXO

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Guardant Health Inc (GH), where a total volume of 11,464 contracts has been traded thus far today, a contract volume which is representative of approximately 1.1 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 43.6% of GH's average daily trading volume over the past month, of 2.6 million shares..