The following stocks were the biggest movers and shakers in the Services sector today.

Some of the biggest gainers among Services stocks include:

Mistras Group Inc (MG): MG stock is up 0.15% today.

Exact Sciences Corp (EXAS): EXAS stock is up 4.03% today.

Allegion Plc Ordinary Shares Wh (ALLE): ALLE stock is up 1.96% today.

Meetme Inc (MEET): MEET stock is up 1.36% today.

Digimarc Corp (DMRC): DMRC stock is up 2.28% today.

Textainer Group Holdings (TGH): TGH stock is down 0.28% today.

Appfolio Inc (APPF): APPF stock is up 1.25% today.

Weibo Corp (WB): WB stock is up 1.76% today.

Qualys Inc (QLYS): QLYS stock is up 2.71% today.

Some of the biggest losers among Services stocks include:

Mobileye N.V. (MBLY): MBLY stock is down 12.05% today.

Yelp Inc (YELP): YELP stock is down 8.93% today.

Code Rebel Corp (CDRB): CDRB stock is up 3.27% today.

Marchex Inc (MCHX): MCHX stock is down 0.56% today.

Twitter Inc (TWTR): TWTR stock is down 4.76% today.

Inuvo Inc (INUV): INUV stock is up 0.45% today.

Perion Network Ltd (PERI): PERI stock is down 3.14% today.

Adcare Health Systems Inc (ADK): ADK stock is down 3.32% today.

Quinstreet Inc (QNST): QNST stock is down 2.61% today.

Command Security Corp (MOC): MOC stock is down 1.26% 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.