Under Armour (UA)(UA.C) continues to hold $30 in a promising sign the stock might finally hit a low. Of course, if the stock doesn't hold, look at below. The retailer could benefit big time from corporate tax cuts in the U.S. with an effective tax rate currently targeted at 35.5%. The stock gets very interesting if the tax rate is cut to 25% or lower. More research:Under Armour: Big Benefit AheadDisclosure: No position