Notable Tuesday Option Activity: UNH, KSU, WDC

Among the underlying components of the S&P 500 index, we saw noteworthy options trading volume today in UnitedHealth Group Inc (UNH), where a total of 11,466 contracts have traded so far, representing approximately 1.1 million underlying shares. That amounts to about 48.8% of UNH's average daily trading volume over the past month of 2.3 million shares..