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

UBS AG fell 11.0 percent to $11.28.

US Gold Corp. fell 4.7 percent to $5.90.

Coeur d'Alene Mines Corp. fell 4.3 percent to $27.05.

Primus Guaranty Ltd. fell 4.2 percent to $5.42.

Darling International Inc. fell 3.5 percent to $15.30.

Endeavour Silver Corp. fell 3.4 percent to $12.10.

Hecla Mining Co. fell 3.4 percent to $7.20.

Yamana Gold Inc. fell 3.3 percent to $15.59.

Chesapeake Lodging Trust fell 3.3 percent to $11.90.

NeoPhotonics Corp. fell 3.3 percent to $7.00.

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