Midday movers: Lockheed Martin, Plantronics & more By: CNBC.com News January 27, 2015 at 13:05 PM EST Take a look at some of Tuesday's midday movers: Read More >> Related Stocks: AK Steel Holding Corp Barrick Gold Corporation Bristol-Myers Squibb Cit Group Inc Commscope Holding Company Family Dollar Stores Genl Dynamics Goldcorp Lockheed Martin Newmont Mining Northrop Grumman Novartis Ag ADR Nucor Corp Plantronics Raytheon Co TE Connectivity Twitter, Inc. Yamana Gold