The largest defense contractors, known as the "Big 5," have seen an unprecedented loss of market share in research and development contracts since 2009 as the Pentagon has significantly cut its pipeline of new weapons programs amid budgetary stress, according to a new report from the Center for Strategic and International Studies. The Big 5, which includes Lockheed Martin, Boeing, Northrop Grumman, Raytheon and General Dynamics, occupied 57 percent of the Defense Department's R&D contracting market in 2009, but saw...
