Notable Wednesday Option Activity: MSCI, GWR, ISRG

Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in MSCI Inc (MSCI), where a total of 4,665 contracts have traded so far, representing approximately 466,500 underlying shares. That amounts to about 69.9% of MSCI's average daily trading volume over the past month of 667,775 shares..