Athletic apparel maker Under Armour has set up shop in Grand Central as part of a Super Bowl marketing blitz. The company can afford to. Its stock is on fire. Athletic apparel maker Under Armour has set up shop in Grand Central as part of a Super Bowl marketing blitz. The company can afford to. Its stock is on fire.

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CNNMoney assistant managing editor Paul LaMonica highlights the latest news from Wall Street and what's moving the markets in his daily investing commentary.
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