Notable Monday Option Activity: STML, PYPL, WFC

Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Stemline Therapeutics Inc (STML), where a total of 712 contracts have traded so far, representing approximately 71,200 underlying shares. That amounts to about 43.5% of STML's average daily trading volume over the past month of 163,845 shares..