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

Heat Biologics rose 48.3 percent to $6.14.

Digital Ally Inc. rose 32.6 percent to $7.68.

America's Car-Mart Inc. rose 17.5 percent to $43.70.

Citizens First Corp. rose 9.2 percent to $12.50.

Mandalay Digital rose 9.1 percent to $5.85.

Bon-Ton Stores Inc. rose 8.5 percent to $9.82.

Argos Therapeutics rose 8.3 percent to $8.43.

HMS Holdings Corp. rose 8.1 percent to $23.32.

Centrue Financial Corp. rose 7.7 percent to $18.36.

Capitol Acq Cp II rose 7.5 percent to $9.80.