Notable Monday Option Activity: IRDM, IDT, ISRG
August 21, 2017 at 15:20 PM EDT
Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Iridium Communications Inc (IRDM), where a total of 4,155 contracts have traded so far, representing approximately 415,500 underlying shares. That amounts to about 59.5% of IRDM's average daily trading volume over the past month of 698,075 shares..