Deutsche Bank analyst Dave Weiner attributes yesterday's 5% post-earnings selloff in shares of Under Armour to investors focusing on the company's gross margin. In Q2, Under Armour's gross margin fell short of expectations amid pressure from the mix effect from footwear growth, Weiner tells investors in a research note. Further, the company's second half guidance implies it will be Q4 weighted, creating more of a "wait & see" story, the analyst contends. He believes, however, that Under Amour remains a top global growth story. Weiner keeps a Buy rating on the shares with a $53 price target.