Sumitomo Mitsui Financial Group, Inc. (SMFG; 株式会社三井住友フィナンシャルグループ, Kabushiki kaisha Mitsui Sumitomo Finansharu Gurūpu) is a Japanese bank holding / financial services company established by Sumitomo Mitsui Banking Corporation, the second largest bank in Japan by market value (as of November 2009).