A look at the 10 biggest percentage gainers on Nasdaq at 1 p.m.:

Datalink Corp. rose 17.1 percent to $11.66.

Acacia Research Corp. rose 16.5 percent to $17.45.

BJ's Restaurant Inc. rose 15.1 percent to $35.26.

Galectin Therapeutics Inc. rose 15.1 percent to $15.79.

Cellular Biomedicine rose 14.4 percent to $24.68.

Mellanox Tech rose 14.0 percent to $42.82.

Qlik Technologies Inc. rose 13.7 percent to $26.60.

Verisign Inc. rose 11.2 percent to $55.41.

Hydrogenics Corp. rose 9.6 percent to $19.88.

Abaxis Inc. rose 9.5 percent to $46.06.