Complex sentence: The bank is the result of the merger of Banco Itaú and Unibanco, which occurred on November 4,2008 to form Itaú Unibanco Holding S.A, the largest financial conglomerate in the Southern Hemisphere and is the 10th largest bank in the world by market value.
Split into simpler sentences: The bank is the result of the merger of Banco Itaú and Unibanco, which occurred on November 4,2008 to form Itaú Unibanco Holding S.A, the largest financial conglomerate in the Southern Hemisphere. It is the 10th largest bank in the world by market value.