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

Some of the biggest gainers among Services stocks include:

Qunar Cayman Islands Ltd (QUNR): QUNR stock is up 9.84% today.

Castlight Health Inc (CSLT): CSLT stock is up 9.12% today.

Meetme Inc (MEET): MEET stock is up 6.98% today.

Rocket Fuel Inc (FUEL): FUEL stock is up 6.29% today.

Mcgrath Rentcorp (MGRC): MGRC stock is up 5.08% today.

Chinacache International (CCIH): CCIH stock is up 4.01% today.

Cleveland Biolabs (CBLI): CBLI stock is up 6.23% today.

Zillow Group Inc. (ZG): ZG stock is up 3.61% today.

Engility Holdings Inc. Common (EGL): EGL stock is up 2.54% today.

GSE Systems (GVP): GVP stock is up 3.48% today.

Some of the biggest losers among Services stocks include:

Weight Watchers International Inc (WTW): WTW stock is down 24.52% today.

Microstrategy Inc (MSTR): MSTR stock is down 8.22% today.

Blucora Inc (BCOR): BCOR stock is down 7.26% today.

Qumu Corp (QUMU): QUMU stock is down 7.21% today.

Paycom Software Inc (PAYC): PAYC stock is down 6.64% today.

Liveperson Inc (LPSN): LPSN stock is down 5.56% today.

Manhattan Associates (MANH): MANH stock is down 5.5% today.

Park City Group (PCYG): PCYG stock is down 4.48% today.

Internap Network Services Corp (INAP): INAP stock is down 5.23% today.

NCI Inc (NCIT): NCIT stock is down 4.25% 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.