NEW YORK (AP) — A look at the 10 biggest percentage decliners on Nasdaq at the close of trading:

Crocs Inc. fell 21.2 percent to $12.76.

Logitech International SA fell 18.5 percent to $7.14.

Spherix Inc. fell 14.1 percent to $6.87.

XenoPort Inc. fell 11.9 percent to $8.60.

F5 Networks Inc. fell 11.1 percent to $83.00.

Cabot Microelectronics Corp. fell 10.8 percent to $29.99.

Parametric Sound Corp. fell 10.0 percent to $5.29.

Astronics Corp. fell 9.9 percent to $23.60.

Arctic Cat Inc. fell 9.6 percent to $37.01.

Synacor Inc. fell 9.1 percent to $5.60.