Global systemically important financial institution, as determined by the FSB. The FSB defines G-SIFIs as “institutions of such size, market importance, and global interconnectedness that their distress or failure would cause significant dislocation in the global financial system and adverse economic consequences across a range of countries.”

Global systemically important insurer, as determined under the IAIS’s assessment methodology. G-SIIs are one class of G-SIFIs.