Notable Friday Option Activity: UAA, KMX, STX

Among the underlying components of the S&P 500 index, we saw noteworthy options trading volume today in Under Armour Inc (UAA), where a total of 31,427 contracts have traded so far, representing approximately 3.1 million underlying shares. That amounts to about 58% of UAA's average daily trading volume over the past month of 5.4 million shares..