Mitsubishi Research Institute DCS (三菱総研DCS), often simply called DCS, for Diamond Computer Service, its former name, is the system integrator of Mitsubishi UFJ Financial Group (MUFG), jointly owned by Mitsubishi Research Institute, Inc. (MRI) (60 percent) and MUFG (40 percent). It was established in 1970 from the IT service department of Mitsubishi Bank, listed in the First Floor of Tokyo Stock Exchange in 2001, but was delisted in 2004. It now employs about 1800 people. DCS has several subsidiaries.