Notable Monday Option Activity: RXDX, GPRE, GH

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Prometheus Biosciences Inc (RXDX), where a total volume of 4,757 contracts has been traded thus far today, a contract volume which is representative of approximately 475,700 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 75.6% of RXDX's average daily trading volume over the past month, of 629,540 shares..