The following stocks were moving the Services sector today.

Some of the biggest gainers among Services stocks include:

GSE Systems (GVP): GVP stock is up 19.59% today.

Perion Network Ltd (PERI): PERI stock is up 12.38% today.

Rocket Fuel Inc (FUEL): FUEL stock is up 10.44% today.

Applied Dna Sciences (APDN): APDN stock is up 7.73% today.

Neogenomics Inc (NEO): NEO stock is up 8.02% today.

Aerocentury Corp (ACY): ACY stock is up 7.65% today.

Magellan Health Services (MGLN): MGLN stock is up 7.78% today.

Five Star Quality Care (FVE): FVE stock is up 5.97% today.

Datawatch Corp (DWCH): DWCH stock is up 4.6% today.

China Distance Education Holdings (DL): DL stock is up 6.77% today.

Some of the biggest losers among Services stocks include:

Yelp Inc (YELP): YELP stock is down 10.07% today.

Determine Inc. (DTRM): DTRM stock is down 7.99% today.

Counterpath Corp (CPAH): CPAH stock is down 7.05% today.

Anavex Life Sciences (AVXL): AVXL stock is down 6.7% today.

Points International (PCOM): PCOM stock is down 4.47% today.

Twitter Inc (TWTR): TWTR stock is down 3.61% today.

Xactly Corp (XTLY): XTLY stock is down 3.6% today.

Efuture Information Technology Inc (EFUT): EFUT stock is down 2.83% today.

Jupai Holdings Ltd (JP): JP stock is down 2.34% today.

For more information on the best stocks to buy right now, check out the latest commentary on InvestorPlace.com.

And for more on the hot stocks moving most on Wall Street right now, check out our archive of daily market movers by sector here.

Editor’s Note: Returns for the fastest-moving stocks listed here are based on share prices 20 minutes prior to publication of this story.