*Gap Inc's Athleta targets 50 U.S. stores by end of 2013. TORONTO, Dec 7- When Lululemon Athletica Inc opened its first U.S. shop in 2003, its form-fitting yoga pants, free classes and Pacific Northwest vibe were a revelation to its new American customers. Montreal- based Lolë, Gap Inc's Athleta and others are expanding aggressively in the United States.
NEW YORK-- Stocks that moved substantially or traded heavily Thursday on the New York Stock Exchange and Nasdaq Stock Market:. Under Armour Inc., down $3.69 at $52.93. Skechers USA Inc., up 31 cents at $16.92.
BALTIMORE-- Under Armour said Thursday that its net income climbed 25 percent in the third quarter, with the athletic clothing maker saying that new products are helping fuel demand for its merchandise. Under Armour Inc. earned $57.3 million, or 54 cents per share, for the three months ended Sept. 30.