The Services sector saw plenty of trading activity today, including the following leaders and losers.

Some of the biggest gainers among Services stocks include:

Arrowhead Research (ARWR): ARWR stock is up 9.84% today.

Community Health Systems (CYH): CYH stock is up 8.46% today.

Benefitfocus Cmn (BNFT): BNFT stock is up 8.2% today.

Jive Software Inc (JIVE): JIVE stock is up 7.32% today.

2U Inc. Cmn Stk (TWOU): TWOU stock is up 7.19% today.

Psychemedics (PMD): PMD stock is up 7.07% today.

Manhattan Assoc (MANH): MANH stock is up 7.03% today.

Virtusa Corporation (VRTU): VRTU stock is up 6.96% today.

Ascent Capital Group (ASCMA): ASCMA stock is up 6.79% today.

Sorrento Therpt Cmn (SRNE): SRNE stock is up 6.71% today.

Some of the biggest losers among Services stocks include:

C S P Inc (CSPI): CSPI stock is down 6.55% today.

Wowo Ltd Ads (WOWO): WOWO stock is down 4.98% today.

Command Security Corp (MOC): MOC stock is down 4.17% today.

Asure Software (ASUR): ASUR stock is down 3.57% today.

Exa Corporation (EXA): EXA stock is down 3.55% today.

Adcare Health Systems Inc (ADK): ADK stock is down 3.54% today.

Tenax Therapeutics (TENX): TENX stock is down 2.87% today.

GSE Systems (GVP): GVP stock is down 2.54% today.

Newtek Bus Svcs Cmn (NEWT): NEWT stock is down 2.51% today.

Demand Media Inc (DMD): DMD stock is down 2.5% 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.