Take a look at some of Friday's midday movers:
Kansas City Southern fell after the rail operator posted weaker-than-expected fourth-quarter earnings amid weakness in its energy business, including lower coal shipments.
A successful debut for Care.com. It moved higher after pricing 5.35 million shares at $17 a share. The company is an online marketplace for finding and managing family care with more than 9.5 million members.
Kimberly-Clark gained ground after reporting better-than-expected fourth-quarter earnings on organic sales growth and wider margins.
W.W. Grainger fell after reporting weaker-than-expected fourth-quarter earnings and lowered its fiscal 2014 guidance, amid weakness in its Canadian business.
BioDelivery Sciences International surged after the company disclosed positive results for a phase 3 study of a treatment for severe chronic pain. The company has a market cap of $325 million.
PTC Therapeutics lost ground after a committee of the European Medicines Agency recommended against a conditional approval of its muscular disorder drug.
Bristol-Myers Squibb slid despite reporting better-than-expected fourth-quarter earnings.
State Street moved lower as higher expenses pressured its fourth-quarter earnings.
Citigroup lost ground. Atlantic Equities downgraded the stock to neutral from overweight with a price target of $55 (from $59).
Arctic Cat slid after Raymond James downgraded the stock to market perform from strong buy and removed its $60 a share price target.
FireEye fell after Barclays downgraded the stock to equal weight from overweight.
Chipotle Mexican Grill moved lower after Wedbush downgraded the stock to neutral from outperform, based on valuation.
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—By CNBC's Rich Fisherman.
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