NEW YORK (AP) â¿¿ A look at the 10 biggest percentage gainers on New York Stock Exchange at 1 p.m.:

99 Cents Only Stores rose 10.4 percent to $18.30.

Endeavour Silver Corp. rose 9.1 percent to $11.31.

First Majestic Silver Corp. rose 7.1 percent to $22.62.

Entercom Communications Corp. rose 7.1 percent to $5.55.

Dice Holdings Inc. rose 7.0 percent to $9.15.

Under Armour Inc. rose 7.0 percent to $56.48.

Swift Transport rose 6.9 percent to $6.84.

Coeur d'Alene Mines Corp. rose 6.8 percent to $27.24.

Hecla Mining Co. rose 6.8 percent to $7.58.

Demand Media Inc. rose 6.4 percent to $7.65.
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