.
.
Since 2006 the United States Federal Reserve has added roughly equal amounts of
U.S. Government Debt Instruments
and Government-Sponsered Enterprise (GSE)/Agency Mortgage Backed Security (MBS) Debt Instruments
to the FED Balance sheet as Assets
The following is the GSE/Agency MBS half of that 1.8 Trillion ( 900 Billion in MBS debt ):



Source: FRB_H41_3_Hist.csv http://www.federalreserve.gov/datadownl ... pe=package
Alternate Source: Preformatted package: H.4.1 Historical Data - Table 3 [csv, All Observations, 2.9 MB ]
http://www.federalreserve.gov/datadownl ... px?rel=H41