This copy is for your personal, non-commercial use only. To order presentation-ready copies for distribution to your colleagues, clients or customers visit http://www.djreprints.com. Under Armour stock (ticker: UAA) sure didn’t spend 2018 riding the pine. Class A shares of the maker of athletic apparel and footwear were sporting a 16% year-to-date gain through Monday. Hedge fund Adage Capital Partners is going with a winner. Adage disclosed in a form it filed late last week to the Securities and Exchange Commission that the fund nearly doubled its investment in Under Armour class A shares.