Midday movers: Cummins, Dollar Tree, Zillow & More By: CNBC.com News July 28, 2014 at 13:40 PM EDT Take a look at some of Monday's midday movers: Read More >> Related Stocks: Alexion Pharmaceuticals Cummins D.R.Horton Dollar Tree Family Dollar Stores First Solar Lennar Corp PulteGroup Tyson Foods