Mitsubishi UFJ Financial Group, Inc. Kabushiki gaisha Mitsubishi UFJ Finansharu Gurūpu is a Japanese bank holding and financial services company headquartered in Chiyoda, Tokyo, Japan.It is Japan's largest financial group and the world's second largest bank holding company holding around US$1.8 trillion (JP¥148 trillion) in deposits as of March 2011. The letters MUFG come from Mitsubishi and United Financial of Japan. MUFG holds assets of around US$3.1 trillion as of 2016 and is one of the "Three Great Houses" of the Mitsubishi Group alongside Mitsubishi Corporation and Mitsubishi Heavy Industries.