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

Some of the biggest gainers among Transportation stocks include:

Alaska Air Group (ALK): ALK stock is up 5.34% today.

Vocaltec Communications Ltd (CALL): CALL stock is up 5.11% today.

Nexstar Broadcasting Group (NXST): NXST stock is up 5.06% today.

Southwest Airlines Company (LUV): LUV stock is up 4.48% today.

Scripps Networks Interactive Inc (SNI): SNI stock is up 4.48% today.

Frp Holdings Inc (FRPH): FRPH stock is up 3.97% today.

Republic Airways Holdings (RJET): RJET stock is up 3.39% today.

Nordic American Tanker Shipping Ltd (NAT): NAT stock is up 3.88% today.

United Continental Holdings (UAL): UAL stock is up 3.7% today.

Grupo Aeroportuario Del Centro (OMAB): OMAB stock is up 2.39% today.

Some of the biggest losers among Transportation stocks include:

NRG Energy (NRG): NRG stock is down 19.23% today.

Dynegy Inc (DYN): DYN stock is down 17.59% today.

Enlink Midstream Llc (ENLC): ENLC stock is down 9.42% today.

Hornbeck Offshore Services (HOS): HOS stock is down 8.46% today.

Tidewater Inc (TDW): TDW stock is down 8.05% today.

Teekay Shipping Corp (TK): TK stock is down 6.82% today.

Saia Inc (SAIA): SAIA stock is down 5.74% today.

Celadon Group (CGI): CGI stock is down 7.26% today.

Clean Energy Fuels (CLNE): CLNE stock is down 6.89% today.

Oneok Inc (OKE): OKE stock is down 7.02% 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.