All told, the Federal Reserve purchased $ billion of Treasury securities and currently anticipates concluding purchases of $ trillion of agency MBS and about $ billion of agency debt securities at the end of March.
As I noted when we were deciding on the expected impact approach as the best available method for calibrating capital surcharges, there is no magic to that method. 14 Indeed, even within that approach, we should be open to research that suggests new or improved ways to determine the relative systemic importance of firms.