Notable Wednesday Option Activity: ZS, DRI, MRK

Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Zscaler Inc (ZS), where a total of 12,879 contracts have traded so far, representing approximately 1.3 million underlying shares. That amounts to about 41.4% of ZS's average daily trading volume over the past month of 3.1 million shares..
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