One but not both of these statements is true. 1) Under Armour stock was fairly priced at $64 per share right before Halloween. 2) Under Armour stock is fairly priced at $28 now. The company and its prospects have not changed by a factor of 50 percent in less than three months. But heck if I know which price is right. The stock dropped another $9 today on news that Under Armour would spend a ton of money on advertising in the next few months. But the market evidently thinks there might be operating/revenue issues as well. This is UA's first experience of severe Wall Street punishment since it went public.