Under Armour shares surge on smaller-than-expected loss By: CNBC.com News April 27, 2017 at 08:06 AM EDT Although Under Armour posted its first-ever loss, it was not nearly as bad as some had feared, sending shares up more than 10 percent Thursday. Read More >> Related Stocks: Adidas Ag ADR J C Penney Company Inc Kohl's Corp Nike Inc Under Armour