Noteworthy Thursday Option Activity: ARWR, RBLX, MRNA

Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Arrowhead Pharmaceuticals Inc (ARWR), where a total of 9,321 contracts have traded so far, representing approximately 932,100 underlying shares. That amounts to about 55.5% of ARWR's average daily trading volume over the past month of 1.7 million shares..