shares of under armour inc cl a uaa shed 131 to 907 wednesday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 041 to 409195 and dow jones industrial average djia falling 011 to 3364650 under armour inc cl a closed 793 below its 52week high 1700 which the company achieved on april 21st the stock underperformed when compared to some of its competitors wednesday as nike inc cl b nke rose 029 to 12366 trading volume 55 m remained