Stocks to Watch Tuesday: DeVry, Sanmina, DuPont By: MarketWatch July 23, 2012 at 17:35 PM EDT DeVry Inc., Sanmina-SCI Corp., Lockheed Martin Corp. and DuPont are among the stocks that could see active trading on Tuesday. Read More >> Related Stocks: Altria Group Ceco Environmental Corp Centene Corp DuPont USA EMC Corp Lockheed Martin Paccar Inc Regions Financial Simon Property Group Six Flags Entertainment Corp Vmware Inc Whirlpool Corp