| 2024-12-31 | Rank |
| U.S. Government agency obligations | $43,037,501,000 | 11 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,183,769,000 | 65 |
| Issued by G.N.M.A. | $63,984,000 | 111 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $14,793,626,000 | 5 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $12,744,059,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,000,883,000 | 2 |
| 2024-09-30 | Rank |
| U.S. Government agency obligations | $45,287,005,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,270,258,000 | 68 |
| Issued by G.N.M.A. | $68,543,000 | 103 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $15,734,093,000 | 7 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $13,655,108,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,301,565,000 | 2 |
| 2024-06-30 | Rank |
| U.S. Government agency obligations | $45,140,314,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,258,750,000 | 68 |
| Issued by G.N.M.A. | $67,821,000 | 97 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,016,572,000 | 6 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $13,416,320,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,129,002,000 | 2 |
| 2024-03-31 | Rank |
| U.S. Government agency obligations | $46,359,195,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,313,726,000 | 68 |
| Issued by G.N.M.A. | $70,635,000 | 95 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,665,025,000 | 6 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $13,638,222,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,418,274,000 | 2 |
| 2023-12-31 | Rank |
| U.S. Government agency obligations | $47,048,748,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,368,090,000 | 66 |
| Issued by G.N.M.A. | $73,315,000 | 87 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $15,155,282,000 | 6 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $14,677,124,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $15,513,928,000 | 2 |
| 2023-09-30 | Rank |
| U.S. Government agency obligations | $46,685,166,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,088,733,000 | 82 |
| Issued by G.N.M.A. | $70,793,000 | 92 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $15,735,944,000 | 6 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $14,224,458,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $15,311,723,000 | 2 |
| 2023-06-30 | Rank |
| U.S. Government agency obligations | $48,750,605,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $998,538,000 | 82 |
| Issued by G.N.M.A. | $75,928,000 | 88 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,372,020,000 | 6 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $15,263,349,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $15,777,116,000 | 2 |
| 2023-03-31 | Rank |
| U.S. Government agency obligations | $50,110,392,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $920,450,000 | 94 |
| Issued by G.N.M.A. | $79,511,000 | 87 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,874,706,000 | 6 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $15,583,648,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $16,381,845,000 | 2 |
| 2022-12-31 | Rank |
| U.S. Government agency obligations | $56,896,186,000 | 11 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $884,643,000 | 103 |
| Issued by G.N.M.A. | $80,406,000 | 86 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $20,983,931,000 | 4 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $15,596,445,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $19,075,014,000 | 2 |
| 2022-09-30 | Rank |
| U.S. Government agency obligations | $63,230,218,000 | 10 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $865,128,000 | 105 |
| Issued by G.N.M.A. | $81,743,000 | 86 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $26,339,569,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $16,001,517,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $19,663,231,000 | 2 |
| 2022-06-30 | Rank |
| U.S. Government agency obligations | $61,271,976,000 | 11 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $921,487,000 | 105 |
| Issued by G.N.M.A. | $89,471,000 | 80 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $22,772,482,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $17,040,987,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $20,140,605,000 | 2 |
| 2022-03-31 | Rank |
| U.S. Government agency obligations | $57,362,273,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,098,202,000 | 97 |
| Issued by G.N.M.A. | $96,796,000 | 75 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $18,069,567,000 | 6 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $16,890,534,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $20,885,541,000 | 2 |
| 2021-12-31 | Rank |
| U.S. Government agency obligations | $55,264,779,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,129,585,000 | 98 |
| Issued by G.N.M.A. | $106,881,000 | 73 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $17,752,310,000 | 7 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $17,791,944,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $17,727,711,000 | 2 |
| 2021-09-30 | Rank |
| U.S. Government agency obligations | $54,084,514,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,236,234,000 | 91 |
| Issued by G.N.M.A. | $114,170,000 | 71 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $19,544,119,000 | 4 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $15,440,569,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $16,979,778,000 | 3 |
| 2021-06-30 | Rank |
| U.S. Government agency obligations | $53,066,832,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,357,802,000 | 81 |
| Issued by G.N.M.A. | $122,834,000 | 67 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $21,532,626,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $12,671,583,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $16,582,491,000 | 3 |
| 2021-03-31 | Rank |
| U.S. Government agency obligations | $52,005,340,000 | 14 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,500,301,000 | 76 |
| Issued by G.N.M.A. | $133,020,000 | 69 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $23,867,239,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $11,091,414,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,609,780,000 | 2 |
| 2020-12-31 | Rank |
| U.S. Government agency obligations | $52,259,871,000 | 11 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,680,720,000 | 65 |
| Issued by G.N.M.A. | $139,141,000 | 66 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $25,921,278,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $9,973,334,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,711,650,000 | 2 |
| 2020-09-30 | Rank |
| U.S. Government agency obligations | $50,192,754,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,739,606,000 | 57 |
| Issued by G.N.M.A. | $151,016,000 | 64 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $24,609,311,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $8,934,889,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,433,801,000 | 2 |
| 2020-06-30 | Rank |
| U.S. Government agency obligations | $49,650,948,000 | 11 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,662,586,000 | 56 |
| Issued by G.N.M.A. | $176,450,000 | 60 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $22,860,523,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $9,103,906,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,944,828,000 | 2 |
| 2020-03-31 | Rank |
| U.S. Government agency obligations | $45,943,619,000 | 11 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,754,270,000 | 53 |
| Issued by G.N.M.A. | $183,019,000 | 57 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $19,435,979,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $8,707,425,000 | 6 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,410,240,000 | 2 |
| 2019-12-31 | Rank |
| U.S. Government agency obligations | $41,719,251,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,818,572,000 | 48 |
| Issued by G.N.M.A. | $184,333,000 | 61 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $15,191,294,000 | 7 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $8,558,780,000 | 6 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $12,780,266,000 | 2 |
| 2019-09-30 | Rank |
| U.S. Government agency obligations | $40,484,576,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,281,621,000 | 42 |
| Issued by G.N.M.A. | $500,405,000 | 39 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $13,469,097,000 | 7 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $8,516,765,000 | 6 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $12,429,924,000 | 2 |
| 2019-06-30 | Rank |
| U.S. Government agency obligations | $36,252,611,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,324,065,000 | 38 |
| Issued by G.N.M.A. | $464,911,000 | 41 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $9,198,826,000 | 10 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $8,494,134,000 | 6 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $12,284,857,000 | 2 |
| 2019-03-31 | Rank |
| U.S. Government agency obligations | $34,080,907,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,319,397,000 | 38 |
| Issued by G.N.M.A. | $412,416,000 | 39 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $7,488,077,000 | 17 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $8,170,068,000 | 6 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $12,233,757,000 | 2 |
| 2018-12-31 | Rank |
| U.S. Government agency obligations | $34,316,141,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,252,751,000 | 31 |
| Issued by G.N.M.A. | $1,035,119,000 | 33 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,221,127,000 | 19 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $7,620,050,000 | 6 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $12,745,608,000 | 2 |
| 2018-09-30 | Rank |
| U.S. Government agency obligations | $35,488,942,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,233,327,000 | 32 |
| Issued by G.N.M.A. | $1,004,742,000 | 33 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,452,112,000 | 19 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $7,853,323,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,530,758,000 | 2 |
| 2018-06-30 | Rank |
| U.S. Government agency obligations | $33,974,053,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | NA | NA |
| Issued by U.S. government enterprises (GSEs) | NA | NA |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,330,333,000 | 31 |
| Issued by G.N.M.A. | $991,334,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,565,102,000 | 25 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $7,607,454,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,055,780,000 | 2 |
| 2018-03-31 | Rank |
| U.S. Government agency obligations | $33,835,903,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | $291,715,000 | 19 |
| Issued by U.S. government enterprises (GSEs) | $3,141,658,000 | 3 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,376,826,000 | 31 |
| Issued by G.N.M.A. | $931,405,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,832,750,000 | 25 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $7,464,863,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,796,686,000 | 2 |
| 2017-12-31 | Rank |
| U.S. Government agency obligations | $32,919,459,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | $305,055,000 | 20 |
| Issued by U.S. government enterprises (GSEs) | $3,161,392,000 | 3 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,487,431,000 | 30 |
| Issued by G.N.M.A. | $917,798,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $5,006,309,000 | 25 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $6,843,485,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,197,989,000 | 2 |
| 2017-09-30 | Rank |
| U.S. Government agency obligations | $33,036,406,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | $311,133,000 | 20 |
| Issued by U.S. government enterprises (GSEs) | $3,180,926,000 | 3 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,389,521,000 | 32 |
| Issued by G.N.M.A. | $849,131,000 | 36 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $5,288,853,000 | 23 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $6,724,166,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,292,676,000 | 2 |
| 2017-06-30 | Rank |
| U.S. Government agency obligations | $25,543,866,000 | 14 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 2,005 |
| Issued by U.S. government enterprises (GSEs) | $1,887,840,000 | 9 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,251,906,000 | 58 |
| Issued by G.N.M.A. | $701,684,000 | 37 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,261,678,000 | 32 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $6,523,249,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $12,917,509,000 | 2 |
| 2017-03-31 | Rank |
| U.S. Government agency obligations | $24,306,549,000 | 16 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,994 |
| Issued by U.S. government enterprises (GSEs) | $1,976,807,000 | 7 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $984,269,000 | 68 |
| Issued by G.N.M.A. | $553,493,000 | 38 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,460,702,000 | 32 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $5,672,753,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $12,658,525,000 | 2 |
| 2016-12-31 | Rank |
| U.S. Government agency obligations | $23,561,923,000 | 18 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,995 |
| Issued by U.S. government enterprises (GSEs) | $2,173,210,000 | 6 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $858,109,000 | 72 |
| Issued by G.N.M.A. | $502,453,000 | 38 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,661,005,000 | 30 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $5,020,209,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $12,346,937,000 | 2 |
| 2016-09-30 | Rank |
| U.S. Government agency obligations | $24,251,146,000 | 14 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,974 |
| Issued by U.S. government enterprises (GSEs) | $2,416,070,000 | 4 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $798,245,000 | 74 |
| Issued by G.N.M.A. | $503,399,000 | 41 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,867,095,000 | 31 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $4,732,004,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $12,934,333,000 | 2 |
| 2016-06-30 | Rank |
| U.S. Government agency obligations | $24,212,100,000 | 15 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,945 |
| Issued by U.S. government enterprises (GSEs) | $2,727,431,000 | 7 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $688,647,000 | 83 |
| Issued by G.N.M.A. | $503,026,000 | 41 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,047,879,000 | 32 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,821,246,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,423,871,000 | 2 |
| 2016-03-31 | Rank |
| U.S. Government agency obligations | $23,220,103,000 | 16 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,945 |
| Issued by U.S. government enterprises (GSEs) | $2,700,904,000 | 7 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $618,649,000 | 85 |
| Issued by G.N.M.A. | $511,026,000 | 38 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,109,937,000 | 32 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,077,596,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,201,991,000 | 2 |
| 2015-12-31 | Rank |
| U.S. Government agency obligations | $23,013,081,000 | 16 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,936 |
| Issued by U.S. government enterprises (GSEs) | $2,652,932,000 | 8 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $606,900,000 | 87 |
| Issued by G.N.M.A. | $509,056,000 | 37 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,268,364,000 | 30 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,825,671,000 | 7 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,150,158,000 | 2 |
| 2015-09-30 | Rank |
| U.S. Government agency obligations | $23,562,777,000 | 14 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,937 |
| Issued by U.S. government enterprises (GSEs) | $2,680,904,000 | 8 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $613,326,000 | 84 |
| Issued by G.N.M.A. | $511,327,000 | 36 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,487,459,000 | 30 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,602,575,000 | 7 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,667,186,000 | 2 |
| 2015-06-30 | Rank |
| U.S. Government agency obligations | $24,393,865,000 | 14 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,929 |
| Issued by U.S. government enterprises (GSEs) | $2,632,659,000 | 8 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $588,525,000 | 86 |
| Issued by G.N.M.A. | $509,340,000 | 39 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,720,557,000 | 26 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,644,210,000 | 6 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,298,574,000 | 2 |
| 2015-03-31 | Rank |
| U.S. Government agency obligations | $25,404,473,000 | 14 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,933 |
| Issued by U.S. government enterprises (GSEs) | $3,000,459,000 | 8 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $617,933,000 | 84 |
| Issued by G.N.M.A. | $540,242,000 | 40 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,874,083,000 | 25 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,657,077,000 | 6 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,714,679,000 | 2 |
| 2014-12-31 | Rank |
| U.S. Government agency obligations | $26,103,355,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,890 |
| Issued by U.S. government enterprises (GSEs) | $3,069,652,000 | 9 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $641,758,000 | 79 |
| Issued by G.N.M.A. | $566,287,000 | 36 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,011,473,000 | 25 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,682,856,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $15,131,329,000 | 2 |
| 2014-09-30 | Rank |
| U.S. Government agency obligations | $27,181,408,000 | 11 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,885 |
| Issued by U.S. government enterprises (GSEs) | $3,549,295,000 | 9 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $653,716,000 | 75 |
| Issued by G.N.M.A. | $583,054,000 | 37 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,232,938,000 | 24 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,549,597,000 | 5 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $15,612,808,000 | 1 |
| 2014-06-30 | Rank |
| U.S. Government agency obligations | $27,429,880,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,903 |
| Issued by U.S. government enterprises (GSEs) | $3,563,788,000 | 9 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $649,023,000 | 74 |
| Issued by G.N.M.A. | $604,906,000 | 36 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,419,347,000 | 24 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,564,590,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $15,628,226,000 | 1 |
| 2014-03-31 | Rank |
| U.S. Government agency obligations | $25,933,306,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,894 |
| Issued by U.S. government enterprises (GSEs) | $3,542,077,000 | 9 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $536,766,000 | 88 |
| Issued by G.N.M.A. | $584,401,000 | 35 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,477,450,000 | 21 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,314,492,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,478,120,000 | 1 |
| 2013-12-31 | Rank |
| U.S. Government agency obligations | $25,508,284,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,874 |
| Issued by U.S. government enterprises (GSEs) | $3,517,950,000 | 9 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $385,566,000 | 109 |
| Issued by G.N.M.A. | $543,369,000 | 36 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,203,827,000 | 25 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,257,052,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,600,520,000 | 1 |
| 2013-09-30 | Rank |
| U.S. Government agency obligations | $26,177,009,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,851 |
| Issued by U.S. government enterprises (GSEs) | $3,552,895,000 | 8 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $304,880,000 | 127 |
| Issued by G.N.M.A. | $506,891,000 | 32 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,466,195,000 | 23 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,558,787,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,787,361,000 | 1 |
| 2013-06-30 | Rank |
| U.S. Government agency obligations | $26,101,996,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,835 |
| Issued by U.S. government enterprises (GSEs) | $3,577,491,000 | 8 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $482,861,000 | 93 |
| Issued by G.N.M.A. | $501,096,000 | 33 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,833,752,000 | 21 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,192,219,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $14,514,577,000 | 1 |
| 2013-03-31 | Rank |
| U.S. Government agency obligations | $24,570,836,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,818 |
| Issued by U.S. government enterprises (GSEs) | $3,661,814,000 | 9 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $209,072,000 | 188 |
| Issued by G.N.M.A. | $503,013,000 | 35 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $5,332,688,000 | 18 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,011,822,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $12,852,427,000 | 1 |
| 2012-12-31 | Rank |
| U.S. Government agency obligations | $26,491,102,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,744 |
| Issued by U.S. government enterprises (GSEs) | $3,671,834,000 | 7 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,347,951,000 | 42 |
| Issued by G.N.M.A. | $524,242,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $5,438,093,000 | 18 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $1,986,245,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,522,737,000 | 1 |
| 2012-09-30 | Rank |
| U.S. Government agency obligations | $27,464,133,000 | 11 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,691 |
| Issued by U.S. government enterprises (GSEs) | $4,189,380,000 | 4 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,498,745,000 | 43 |
| Issued by G.N.M.A. | $531,474,000 | 33 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $5,824,765,000 | 18 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $1,815,131,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $13,604,638,000 | 1 |
| 2012-06-30 | Rank |
| U.S. Government agency obligations | $27,232,858,000 | 11 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,623 |
| Issued by U.S. government enterprises (GSEs) | $4,181,787,000 | 5 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,819,934,000 | 37 |
| Issued by G.N.M.A. | $997,269,000 | 24 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,182,187,000 | 17 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $1,531,547,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $12,520,134,000 | 1 |
| 2012-03-31 | Rank |
| U.S. Government agency obligations | $24,681,437,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,554 |
| Issued by U.S. government enterprises (GSEs) | $4,339,788,000 | 5 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,939,477,000 | 36 |
| Issued by G.N.M.A. | $832,094,000 | 26 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,195,427,000 | 19 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $1,464,698,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $9,909,953,000 | 1 |
| 2011-12-31 | Rank |
| U.S. Government agency obligations | $22,378,287,000 | 15 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,350 |
| Issued by U.S. government enterprises (GSEs) | $3,921,408,000 | 5 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,045,406,000 | 29 |
| Issued by G.N.M.A. | $744,961,000 | 26 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $7,784,844,000 | 12 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $1,147,772,000 | 3 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $6,733,896,000 | 1 |
| 2011-09-30 | Rank |
| U.S. Government agency obligations | $19,109,471,000 | 16 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,284 |
| Issued by U.S. government enterprises (GSEs) | $3,420,527,000 | 5 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,217,860,000 | 25 |
| Issued by G.N.M.A. | $675,432,000 | 26 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $7,810,563,000 | 12 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $706,783,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $4,278,306,000 | 1 |
| 2011-06-30 | Rank |
| U.S. Government agency obligations | $16,100,848,000 | 20 |
| Non-mortgage backed: |
| U.S. government agencies | $25,000 | 1,167 |
| Issued by U.S. government enterprises (GSEs) | $2,601,552,000 | 6 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,251,717,000 | 25 |
| Issued by G.N.M.A. | $546,974,000 | 28 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $7,264,907,000 | 12 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $450,439,000 | 4 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $2,985,234,000 | 1 |
| 2011-03-31 | Rank |
| U.S. Government agency obligations | $14,526,844,000 | 20 |
| Non-mortgage backed: |
| U.S. government agencies | $26,000 | 1,114 |
| Issued by U.S. government enterprises (GSEs) | $2,153,287,000 | 10 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,335,756,000 | 25 |
| Issued by G.N.M.A. | $453,359,000 | 31 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,682,676,000 | 13 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $7,560,000 | 50 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $2,894,180,000 | 1 |
| 2010-12-31 | Rank |
| U.S. Government agency obligations | $12,767,540,000 | 20 |
| Non-mortgage backed: |
| U.S. government agencies | $1,324,000 | 636 |
| Issued by U.S. government enterprises (GSEs) | $2,710,255,000 | 7 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,863,765,000 | 22 |
| Issued by G.N.M.A. | $929,905,000 | 18 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,262,291,000 | 13 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2010-09-30 | Rank |
| U.S. Government agency obligations | $10,996,694,000 | 22 |
| Non-mortgage backed: |
| U.S. government agencies | $10,000 | 1,115 |
| Issued by U.S. government enterprises (GSEs) | $3,025,728,000 | 6 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,236,946,000 | 22 |
| Issued by G.N.M.A. | $862,681,000 | 19 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,871,329,000 | 15 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2010-06-30 | Rank |
| U.S. Government agency obligations | $8,556,975,000 | 23 |
| Non-mortgage backed: |
| U.S. government agencies | $10,000 | 1,106 |
| Issued by U.S. government enterprises (GSEs) | $1,794,265,000 | 15 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,981,201,000 | 27 |
| Issued by G.N.M.A. | $432,130,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,349,369,000 | 15 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2010-03-31 | Rank |
| U.S. Government agency obligations | $5,855,543,000 | 31 |
| Non-mortgage backed: |
| U.S. government agencies | $50,000 | 1,001 |
| Issued by U.S. government enterprises (GSEs) | $702,273,000 | 34 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,276,035,000 | 38 |
| Issued by G.N.M.A. | $218,007,000 | 38 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,659,178,000 | 18 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2009-12-31 | Rank |
| U.S. Government agency obligations | $5,492,423,000 | 31 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,094 |
| Issued by U.S. government enterprises (GSEs) | $714,070,000 | 34 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,363,686,000 | 37 |
| Issued by G.N.M.A. | $150,934,000 | 50 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,263,733,000 | 19 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2009-09-30 | Rank |
| U.S. Government agency obligations | $3,189,722,000 | 54 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,065 |
| Issued by U.S. government enterprises (GSEs) | $47,000 | 5,754 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $609,710,000 | 70 |
| Issued by G.N.M.A. | $150,353,000 | 47 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,429,612,000 | 23 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2009-06-30 | Rank |
| U.S. Government agency obligations | $2,359,118,000 | 64 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,037 |
| Issued by U.S. government enterprises (GSEs) | $26,000 | 5,761 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $632,500,000 | 71 |
| Issued by G.N.M.A. | $143,284,000 | 44 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,583,308,000 | 29 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2009-03-31 | Rank |
| U.S. Government agency obligations | $2,526,450,000 | 58 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 957 |
| Issued by U.S. government enterprises (GSEs) | $101,000 | 5,881 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $674,977,000 | 67 |
| Issued by G.N.M.A. | $141,713,000 | 45 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,709,659,000 | 27 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2008-12-31 | Rank |
| U.S. Government agency obligations | $3,506,031,000 | 44 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 921 |
| Issued by U.S. government enterprises (GSEs) | $100,000 | 6,032 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,711,018,000 | 32 |
| Issued by G.N.M.A. | $152,002,000 | 40 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,642,911,000 | 25 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2008-09-30 | Rank |
| U.S. Government agency obligations | $3,693,660,000 | 41 |
| Non-mortgage backed: |
| U.S. government agencies | $36,000 | 731 |
| Issued by U.S. government enterprises (GSEs) | $110,000 | 6,128 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,799,211,000 | 32 |
| Issued by G.N.M.A. | $182,266,000 | 28 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,712,037,000 | 20 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2008-06-30 | Rank |
| U.S. Government agency obligations | $9,675,010,000 | 16 |
| Non-mortgage backed: |
| U.S. government agencies | $37,000 | 692 |
| Issued by U.S. government enterprises (GSEs) | $6,639,696,000 | 2 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,840,088,000 | 30 |
| Issued by G.N.M.A. | $192,219,000 | 23 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,002,970,000 | 36 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2008-03-31 | Rank |
| U.S. Government agency obligations | $2,436,468,000 | 55 |
| Non-mortgage backed: |
| U.S. government agencies | $37,000 | 687 |
| Issued by U.S. government enterprises (GSEs) | $584,750,000 | 35 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,586,705,000 | 39 |
| Issued by G.N.M.A. | $205,112,000 | 21 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $59,864,000 | 273 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2007-12-31 | Rank |
| U.S. Government agency obligations | $2,424,199,000 | 55 |
| Non-mortgage backed: |
| U.S. government agencies | $38,000 | 664 |
| Issued by U.S. government enterprises (GSEs) | $517,990,000 | 42 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,616,171,000 | 34 |
| Issued by G.N.M.A. | $229,416,000 | 18 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $60,584,000 | 273 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2007-09-30 | Rank |
| U.S. Government agency obligations | $2,473,390,000 | 56 |
| Non-mortgage backed: |
| U.S. government agencies | $45,000 | 640 |
| Issued by U.S. government enterprises (GSEs) | $600,446,000 | 41 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,596,776,000 | 34 |
| Issued by G.N.M.A. | $214,067,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $62,056,000 | 254 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2007-06-30 | Rank |
| U.S. Government agency obligations | $2,266,293,000 | 63 |
| Non-mortgage backed: |
| U.S. government agencies | $50,000 | 642 |
| Issued by U.S. government enterprises (GSEs) | $482,501,000 | 54 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,573,720,000 | 34 |
| Issued by G.N.M.A. | $146,041,000 | 29 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $63,981,000 | 254 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2007-03-31 | Rank |
| U.S. Government agency obligations | $1,595,317,000 | 89 |
| Non-mortgage backed: |
| U.S. government agencies | $51,000 | 639 |
| Issued by U.S. government enterprises (GSEs) | $282,000 | 6,755 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,416,982,000 | 39 |
| Issued by G.N.M.A. | $110,107,000 | 41 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $67,895,000 | 238 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2006-12-31 | Rank |
| U.S. Government agency obligations | $1,907,155,000 | 78 |
| Non-mortgage backed: |
| U.S. government agencies | $52,000 | 646 |
| Issued by U.S. government enterprises (GSEs) | $397,282,000 | 71 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,352,494,000 | 38 |
| Issued by G.N.M.A. | $86,885,000 | 52 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $70,442,000 | 237 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2006-09-30 | Rank |
| U.S. Government agency obligations | $1,870,789,000 | 85 |
| Non-mortgage backed: |
| U.S. government agencies | $53,000 | 648 |
| Issued by U.S. government enterprises (GSEs) | $397,349,000 | 71 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,319,774,000 | 40 |
| Issued by G.N.M.A. | $80,207,000 | 55 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $73,406,000 | 237 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2006-06-30 | Rank |
| U.S. Government agency obligations | $1,800,835,000 | 83 |
| Non-mortgage backed: |
| U.S. government agencies | $64,000 | 635 |
| Issued by U.S. government enterprises (GSEs) | $393,681,000 | 75 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,247,597,000 | 43 |
| Issued by G.N.M.A. | $83,864,000 | 55 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $75,629,000 | 228 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2006-03-31 | Rank |
| U.S. Government agency obligations | $1,758,109,000 | 89 |
| Non-mortgage backed: |
| U.S. government agencies | $67,000 | 630 |
| Issued by U.S. government enterprises (GSEs) | $396,731,000 | 78 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,191,058,000 | 46 |
| Issued by G.N.M.A. | $90,300,000 | 55 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $79,953,000 | 220 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2005-12-31 | Rank |
| U.S. Government agency obligations | $3,966,673,000 | 48 |
| Non-mortgage backed: |
| U.S. government agencies | $68,000 | 632 |
| Issued by U.S. government enterprises (GSEs) | $1,575,000 | 6,467 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,665,372,000 | 12 |
| Issued by G.N.M.A. | $68,897,000 | 71 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $230,761,000 | 116 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2005-09-30 | Rank |
| U.S. Government agency obligations | $3,961,138,000 | 45 |
| Non-mortgage backed: |
| U.S. government agencies | $69,000 | 624 |
| Issued by U.S. government enterprises (GSEs) | $3,551,000 | 5,580 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,635,884,000 | 12 |
| Issued by G.N.M.A. | $74,175,000 | 74 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $247,459,000 | 112 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2005-06-30 | Rank |
| U.S. Government agency obligations | $3,695,096,000 | 49 |
| Non-mortgage backed: |
| U.S. government agencies | $79,000 | 590 |
| Issued by U.S. government enterprises (GSEs) | $54,000 | 7,120 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,399,516,000 | 13 |
| Issued by G.N.M.A. | $79,984,000 | 62 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $215,463,000 | 126 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2005-03-31 | Rank |
| U.S. Government agency obligations | $4,187,153,000 | 46 |
| Non-mortgage backed: |
| U.S. government agencies | $80,000 | 603 |
| Issued by U.S. government enterprises (GSEs) | $17,617,000 | 2,283 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,845,573,000 | 13 |
| Issued by G.N.M.A. | $84,803,000 | 62 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $239,080,000 | 117 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2004-12-31 | Rank |
| U.S. Government agency obligations | $6,165,037,000 | 33 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 823 |
| Issued by U.S. government enterprises (GSEs) | $517,434,000 | 65 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $5,040,160,000 | 14 |
| Issued by G.N.M.A. | $91,758,000 | 63 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $515,685,000 | 70 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2004-09-30 | Rank |
| U.S. Government agency obligations | $6,603,378,000 | 33 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 836 |
| Issued by U.S. government enterprises (GSEs) | $1,657,497,000 | 19 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $4,483,134,000 | 15 |
| Issued by G.N.M.A. | $97,394,000 | 63 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $365,353,000 | 82 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2004-06-30 | Rank |
| U.S. Government agency obligations | $7,118,013,000 | 27 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 863 |
| Issued by U.S. government enterprises (GSEs) | $1,624,884,000 | 22 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $5,257,658,000 | 15 |
| Issued by G.N.M.A. | $48,392,000 | 118 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $187,079,000 | 146 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2004-03-31 | Rank |
| U.S. Government agency obligations | $6,582,214,000 | 31 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 883 |
| Issued by U.S. government enterprises (GSEs) | $1,691,459,000 | 20 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $4,612,862,000 | 15 |
| Issued by G.N.M.A. | $54,179,000 | 105 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $223,714,000 | 134 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2003-12-31 | Rank |
| U.S. Government agency obligations | $6,410,447,000 | 33 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 929 |
| Issued by U.S. government enterprises (GSEs) | $2,317,386,000 | 14 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,804,212,000 | 16 |
| Issued by G.N.M.A. | $59,045,000 | 111 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $229,804,000 | 136 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2003-09-30 | Rank |
| U.S. Government agency obligations | $6,212,044,000 | 32 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 968 |
| Issued by U.S. government enterprises (GSEs) | $2,281,171,000 | 13 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,582,530,000 | 16 |
| Issued by G.N.M.A. | $66,301,000 | 103 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $282,042,000 | 119 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2003-06-30 | Rank |
| U.S. Government agency obligations | $6,225,042,000 | 30 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 979 |
| Issued by U.S. government enterprises (GSEs) | $2,098,512,000 | 16 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,655,878,000 | 13 |
| Issued by G.N.M.A. | $78,050,000 | 100 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $392,602,000 | 104 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2003-03-31 | Rank |
| U.S. Government agency obligations | $6,644,621,000 | 29 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 994 |
| Issued by U.S. government enterprises (GSEs) | $1,816,091,000 | 18 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $4,248,753,000 | 13 |
| Issued by G.N.M.A. | $89,065,000 | 95 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $490,712,000 | 93 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2002-12-31 | Rank |
| U.S. Government agency obligations | $5,782,213,000 | 31 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,007 |
| Issued by U.S. government enterprises (GSEs) | $1,528,414,000 | 21 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,699,369,000 | 13 |
| Issued by G.N.M.A. | $99,852,000 | 99 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $454,578,000 | 85 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2001-12-31 | Rank |
| U.S. Government agency obligations | $1,531,749,000 | 96 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,110 |
| Issued by U.S. government enterprises (GSEs) | $159,968,000 | 126 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,240,269,000 | 34 |
| Issued by G.N.M.A. | $38,742,000 | 226 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $92,770,000 | 263 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 2000-12-31 | Rank |
| U.S. Government agency obligations | $1,044,017,000 | 118 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,091 |
| Issued by U.S. government enterprises (GSEs) | $75,161,000 | 400 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $934,512,000 | 40 |
| Issued by G.N.M.A. | $32,329,000 | 252 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,015,000 | 2,145 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 1999-12-31 | Rank |
| U.S. Government agency obligations | $1,204,909,000 | 105 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,161 |
| Issued by U.S. government enterprises (GSEs) | $77,398,000 | 356 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,086,982,000 | 35 |
| Issued by G.N.M.A. | $37,292,000 | 239 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,237,000 | 1,859 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 1998-12-31 | Rank |
| U.S. Government agency obligations | $761,187,000 | 145 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,266 |
| Issued by U.S. government enterprises (GSEs) | $20,012,000 | 1,583 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $702,321,000 | 54 |
| Issued by G.N.M.A. | $27,706,000 | 293 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $11,148,000 | 1,006 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 1997-12-31 | Rank |
| U.S. Government agency obligations | $272,816,000 | 353 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,382 |
| Issued by U.S. government enterprises (GSEs) | $4,004,000 | 5,286 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $229,608,000 | 111 |
| Issued by G.N.M.A. | $16,231,000 | 368 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $22,973,000 | 588 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 1996-12-31 | Rank |
| U.S. Government agency obligations | $196,424,000 | 470 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,552 |
| Issued by U.S. government enterprises (GSEs) | $3,010,000 | 5,989 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $183,982,000 | 135 |
| Issued by G.N.M.A. | $8,091,000 | 635 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,341,000 | 3,381 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 1995-12-31 | Rank |
| U.S. Government agency obligations | $184,163,000 | 480 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,692 |
| Issued by U.S. government enterprises (GSEs) | $26,085,000 | 861 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $146,449,000 | 153 |
| Issued by G.N.M.A. | $9,980,000 | 491 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,649,000 | 3,548 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 1994-12-31 | Rank |
| U.S. Government agency obligations | $165,929,000 | 504 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,632 |
| Issued by U.S. government enterprises (GSEs) | $18,185,000 | 1,104 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $134,881,000 | 154 |
| Issued by G.N.M.A. | $10,802,000 | 476 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,061,000 | 3,402 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 1993-12-31 | Rank |
| U.S. Government agency obligations | $185,842,000 | 458 |
| Non-mortgage backed: |
| U.S. government agencies | $3,000 | 1,427 |
| Issued by U.S. government enterprises (GSEs) | $0 | 9,018 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $168,480,000 | 128 |
| Issued by G.N.M.A. | $14,212,000 | 335 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,147,000 | 3,134 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
| 1992-12-31 | Rank |
| U.S. Government agency obligations | $150,993,000 | 514 |
| Non-mortgage backed: |
| U.S. government agencies | $14,000 | 1,360 |
| Issued by U.S. government enterprises (GSEs) | $0 | 9,150 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $140,669,000 | 132 |
| Issued by G.N.M.A. | $5,390,000 | 773 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,920,000 | 2,432 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | NA | NA |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | NA | NA |
