(4-traders.com) PHILADELPHIA, Oct. 6, 2015 /PRNewswire/ -- CDI Corp. (NYSE: CDI) announced today that it has acquired 100 percent of the members' interests in EdgeRock Technologies, LLC (EdgeRock), a privately held, emerging leader in specialist IT staffing. EdgeRock operates a national client platform with headquarters in Boston, MA, and additional...http://www.4-traders.com/CDI-CORP-12012/news/CDI--Acquires-EdgeRock-Technologies-a-Leading-Provider-of-Specialty-IT-Staffing-21155876/