| 2025-03-31 | Rank |
| U.S. Government agency obligations | $17,597,000,000 | 26 |
| 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. | $9,184,000,000 | 20 |
| Issued by G.N.M.A. | $1,488,000,000 | 29 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,448,000,000 | 39 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $4,041,000,000 | 10 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $436,000,000 | 53 |
| 2024-12-31 | Rank |
| U.S. Government agency obligations | $17,527,000,000 | 25 |
| 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. | $10,721,000,000 | 17 |
| Issued by G.N.M.A. | $1,535,000,000 | 26 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,480,000,000 | 50 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,361,000,000 | 10 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $430,000,000 | 52 |
| 2024-09-30 | Rank |
| U.S. Government agency obligations | $18,564,000,000 | 28 |
| 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. | $11,520,000,000 | 18 |
| Issued by G.N.M.A. | $1,646,000,000 | 27 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,563,000,000 | 49 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,386,000,000 | 12 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $449,000,000 | 52 |
| 2024-06-30 | Rank |
| U.S. Government agency obligations | $18,044,000,000 | 26 |
| 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. | $11,240,000,000 | 18 |
| Issued by G.N.M.A. | $1,626,000,000 | 25 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,542,000,000 | 50 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,218,000,000 | 12 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $418,000,000 | 53 |
| 2024-03-31 | Rank |
| U.S. Government agency obligations | $18,439,000,000 | 27 |
| 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. | $11,551,000,000 | 17 |
| Issued by G.N.M.A. | $1,681,000,000 | 24 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,584,000,000 | 49 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,196,000,000 | 11 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $427,000,000 | 51 |
| 2023-12-31 | Rank |
| U.S. Government agency obligations | $18,998,000,000 | 25 |
| 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. | $12,039,000,000 | 17 |
| Issued by G.N.M.A. | $1,750,000,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,634,000,000 | 46 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,144,000,000 | 10 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $431,000,000 | 49 |
| 2023-09-30 | Rank |
| U.S. Government agency obligations | $18,058,000,000 | 26 |
| 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. | $11,472,000,000 | 18 |
| Issued by G.N.M.A. | $1,675,000,000 | 21 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,588,000,000 | 48 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,900,000,000 | 12 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $423,000,000 | 49 |
| 2023-06-30 | Rank |
| U.S. Government agency obligations | $19,430,000,000 | 27 |
| 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. | $12,411,000,000 | 18 |
| Issued by G.N.M.A. | $1,801,000,000 | 21 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,684,000,000 | 44 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,091,000,000 | 10 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $443,000,000 | 48 |
| 2023-03-31 | Rank |
| U.S. Government agency obligations | $19,986,000,000 | 25 |
| 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. | $12,819,000,000 | 17 |
| Issued by G.N.M.A. | $1,870,000,000 | 23 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,750,000,000 | 43 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,098,000,000 | 11 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $449,000,000 | 50 |
| 2022-12-31 | Rank |
| U.S. Government agency obligations | $20,102,000,000 | 27 |
| 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. | $12,811,000,000 | 19 |
| Issued by G.N.M.A. | $2,099,000,000 | 21 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,759,000,000 | 46 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,997,000,000 | 10 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $436,000,000 | 56 |
| 2022-09-30 | Rank |
| U.S. Government agency obligations | $20,146,000,000 | 28 |
| 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. | $12,946,000,000 | 18 |
| Issued by G.N.M.A. | $1,967,000,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,809,000,000 | 47 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,056,000,000 | 10 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $368,000,000 | 66 |
| 2022-06-30 | Rank |
| U.S. Government agency obligations | $21,615,000,000 | 28 |
| 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. | $14,180,000,000 | 17 |
| Issued by G.N.M.A. | $1,756,000,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,950,000,000 | 46 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,367,000,000 | 12 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $362,000,000 | 76 |
| 2022-03-31 | Rank |
| U.S. Government agency obligations | $22,861,000,000 | 28 |
| 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. | $15,551,000,000 | 17 |
| Issued by G.N.M.A. | $1,234,000,000 | 27 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,126,000,000 | 43 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,516,000,000 | 12 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $434,000,000 | 72 |
| 2021-12-31 | Rank |
| U.S. Government agency obligations | $24,032,000,000 | 26 |
| 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. | $16,412,000,000 | 16 |
| Issued by G.N.M.A. | $764,000,000 | 33 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,330,000,000 | 40 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $4,105,000,000 | 10 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $421,000,000 | 72 |
| 2021-09-30 | Rank |
| U.S. Government agency obligations | $24,915,000,000 | 25 |
| 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. | $16,821,000,000 | 15 |
| Issued by G.N.M.A. | $888,000,000 | 30 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,470,000,000 | 41 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $4,311,000,000 | 10 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $425,000,000 | 73 |
| 2021-06-30 | Rank |
| U.S. Government agency obligations | $25,617,000,000 | 25 |
| 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. | $18,044,000,000 | 15 |
| Issued by G.N.M.A. | $868,000,000 | 32 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,300,000,000 | 42 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $4,041,000,000 | 11 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $364,000,000 | 80 |
| 2021-03-31 | Rank |
| U.S. Government agency obligations | $26,021,000,000 | 23 |
| 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. | $18,311,000,000 | 15 |
| Issued by G.N.M.A. | $961,000,000 | 28 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,597,000,000 | 37 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,875,000,000 | 10 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $277,000,000 | 87 |
| 2020-12-31 | Rank |
| U.S. Government agency obligations | $23,312,000,000 | 25 |
| 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. | $15,464,000,000 | 16 |
| Issued by G.N.M.A. | $1,203,000,000 | 28 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,455,000,000 | 37 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,907,000,000 | 10 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $282,000,000 | 85 |
| 2020-09-30 | Rank |
| U.S. Government agency obligations | $23,131,000,000 | 25 |
| 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. | $16,587,000,000 | 14 |
| Issued by G.N.M.A. | $1,488,000,000 | 26 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,810,000,000 | 33 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,245,000,000 | 13 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 1,266 |
| 2020-06-30 | Rank |
| U.S. Government agency obligations | $22,037,000,000 | 24 |
| 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. | $14,935,000,000 | 14 |
| Issued by G.N.M.A. | $2,035,000,000 | 26 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,280,000,000 | 32 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $1,786,000,000 | 14 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 1,234 |
| 2020-03-31 | Rank |
| U.S. Government agency obligations | $23,335,000,000 | 21 |
| 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. | $15,532,000,000 | 14 |
| Issued by G.N.M.A. | $2,294,000,000 | 24 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,061,000,000 | 29 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $1,447,000,000 | 16 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 1,209 |
| 2019-12-31 | Rank |
| U.S. Government agency obligations | $23,203,000,000 | 20 |
| 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. | $15,263,000,000 | 13 |
| Issued by G.N.M.A. | $2,211,000,000 | 25 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,344,000,000 | 26 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $1,383,000,000 | 16 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 1,175 |
| 2019-09-30 | Rank |
| U.S. Government agency obligations | $22,909,000,000 | 21 |
| 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. | $14,910,000,000 | 13 |
| Issued by G.N.M.A. | $2,379,000,000 | 26 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $4,205,000,000 | 26 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $1,413,000,000 | 14 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 1,137 |
| 2019-06-30 | Rank |
| U.S. Government agency obligations | $20,908,000,000 | 22 |
| 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. | $13,569,000,000 | 13 |
| Issued by G.N.M.A. | $2,531,000,000 | 25 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,455,000,000 | 29 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $1,351,000,000 | 14 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 1,122 |
| 2019-03-31 | Rank |
| U.S. Government agency obligations | $19,494,000,000 | 22 |
| 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. | $12,922,000,000 | 13 |
| Issued by G.N.M.A. | $3,083,000,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,167,000,000 | 30 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $320,000,000 | 36 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 1,030 |
| 2018-12-31 | Rank |
| U.S. Government agency obligations | $17,606,000,000 | 23 |
| 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. | $11,133,000,000 | 13 |
| Issued by G.N.M.A. | $3,344,000,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,124,000,000 | 28 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,000,000 | 743 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 992 |
| 2018-09-30 | Rank |
| U.S. Government agency obligations | $16,378,000,000 | 25 |
| 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. | $10,361,000,000 | 16 |
| Issued by G.N.M.A. | $3,182,000,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,830,000,000 | 30 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,000,000 | 729 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 989 |
| 2018-06-30 | Rank |
| U.S. Government agency obligations | $15,345,000,000 | 25 |
| 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. | $9,885,000,000 | 16 |
| Issued by G.N.M.A. | $3,027,000,000 | 23 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,428,000,000 | 32 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,000,000 | 700 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 967 |
| 2018-03-31 | Rank |
| U.S. Government agency obligations | $15,003,000,000 | 25 |
| Non-mortgage backed: |
| U.S. government agencies | $2,000,000 | 1,249 |
| Issued by U.S. government enterprises (GSEs) | $0 | 3,606 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $9,812,000,000 | 15 |
| Issued by G.N.M.A. | $2,881,000,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,305,000,000 | 33 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,000,000 | 556 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 947 |
| 2017-12-31 | Rank |
| U.S. Government agency obligations | $14,300,000,000 | 27 |
| Non-mortgage backed: |
| U.S. government agencies | $2,000,000 | 1,263 |
| Issued by U.S. government enterprises (GSEs) | $0 | 3,612 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $9,127,000,000 | 17 |
| Issued by G.N.M.A. | $2,786,000,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,382,000,000 | 31 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,000,000 | 550 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 920 |
| 2017-09-30 | Rank |
| U.S. Government agency obligations | $14,164,000,000 | 27 |
| Non-mortgage backed: |
| U.S. government agencies | $2,000,000 | 1,265 |
| Issued by U.S. government enterprises (GSEs) | $0 | 3,667 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $8,870,000,000 | 16 |
| Issued by G.N.M.A. | $2,814,000,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,475,000,000 | 31 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,000,000 | 556 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 895 |
| 2017-06-30 | Rank |
| U.S. Government agency obligations | $12,442,000,000 | 30 |
| Non-mortgage backed: |
| U.S. government agencies | $2,000,000 | 1,275 |
| Issued by U.S. government enterprises (GSEs) | $0 | 3,736 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $7,114,000,000 | 19 |
| Issued by G.N.M.A. | $2,932,000,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,391,000,000 | 31 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,000,000 | 536 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 862 |
| 2017-03-31 | Rank |
| U.S. Government agency obligations | $10,275,000,000 | 32 |
| Non-mortgage backed: |
| U.S. government agencies | $3,000,000 | 1,059 |
| Issued by U.S. government enterprises (GSEs) | $0 | 3,814 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $5,851,000,000 | 20 |
| Issued by G.N.M.A. | $1,957,000,000 | 24 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,461,000,000 | 31 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,000,000 | 517 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 854 |
| 2016-12-31 | Rank |
| U.S. Government agency obligations | $8,757,764,000 | 37 |
| Non-mortgage backed: |
| U.S. government agencies | $2,952,000 | 1,059 |
| Issued by U.S. government enterprises (GSEs) | $0 | 3,848 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $4,579,115,000 | 22 |
| Issued by G.N.M.A. | $1,528,276,000 | 27 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,644,399,000 | 31 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,022,000 | 492 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 810 |
| 2016-09-30 | Rank |
| U.S. Government agency obligations | $8,257,188,000 | 38 |
| Non-mortgage backed: |
| U.S. government agencies | $3,225,000 | 1,005 |
| Issued by U.S. government enterprises (GSEs) | $0 | 3,907 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,899,864,000 | 29 |
| Issued by G.N.M.A. | $2,687,986,000 | 20 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,662,932,000 | 32 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,181,000 | 447 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 779 |
| 2016-06-30 | Rank |
| U.S. Government agency obligations | $7,743,995,000 | 39 |
| Non-mortgage backed: |
| U.S. government agencies | $3,574,000 | 913 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,154 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,367,981,000 | 33 |
| Issued by G.N.M.A. | $2,609,626,000 | 19 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,759,603,000 | 33 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,211,000 | 402 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 746 |
| 2016-03-31 | Rank |
| U.S. Government agency obligations | $7,142,502,000 | 40 |
| Non-mortgage backed: |
| U.S. government agencies | $3,828,000 | 886 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,297 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,817,308,000 | 50 |
| Issued by G.N.M.A. | $2,856,941,000 | 18 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,461,295,000 | 34 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,130,000 | 392 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 720 |
| 2015-12-31 | Rank |
| U.S. Government agency obligations | $5,392,005,000 | 43 |
| Non-mortgage backed: |
| U.S. government agencies | $4,139,000 | 830 |
| Issued by U.S. government enterprises (GSEs) | $198,342,000 | 106 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,597,584,000 | 48 |
| Issued by G.N.M.A. | $963,290,000 | 30 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,625,552,000 | 34 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,098,000 | 374 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 672 |
| 2015-09-30 | Rank |
| U.S. Government agency obligations | $6,415,395,000 | 39 |
| Non-mortgage backed: |
| U.S. government agencies | $4,596,000 | 770 |
| Issued by U.S. government enterprises (GSEs) | $619,887,000 | 31 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,896,018,000 | 42 |
| Issued by G.N.M.A. | $371,154,000 | 48 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,520,545,000 | 28 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,195,000 | 365 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 630 |
| 2015-06-30 | Rank |
| U.S. Government agency obligations | $6,725,604,000 | 39 |
| Non-mortgage backed: |
| U.S. government agencies | $5,191,000 | 689 |
| Issued by U.S. government enterprises (GSEs) | $618,071,000 | 33 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,009,835,000 | 42 |
| Issued by G.N.M.A. | $389,710,000 | 48 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,699,657,000 | 29 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,140,000 | 349 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 613 |
| 2015-03-31 | Rank |
| U.S. Government agency obligations | $6,200,048,000 | 39 |
| Non-mortgage backed: |
| U.S. government agencies | $5,606,000 | 658 |
| Issued by U.S. government enterprises (GSEs) | $497,932,000 | 47 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,824,904,000 | 45 |
| Issued by G.N.M.A. | $424,941,000 | 46 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,446,665,000 | 29 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 716 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 592 |
| 2014-12-31 | Rank |
| U.S. Government agency obligations | $6,404,290,000 | 39 |
| Non-mortgage backed: |
| U.S. government agencies | $6,192,000 | 580 |
| Issued by U.S. government enterprises (GSEs) | $591,122,000 | 40 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,779,939,000 | 43 |
| Issued by G.N.M.A. | $448,598,000 | 43 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,578,439,000 | 28 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 719 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 555 |
| 2014-09-30 | Rank |
| U.S. Government agency obligations | $6,532,183,000 | 40 |
| Non-mortgage backed: |
| U.S. government agencies | $6,835,000 | 530 |
| Issued by U.S. government enterprises (GSEs) | $588,284,000 | 39 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,759,042,000 | 44 |
| Issued by G.N.M.A. | $461,457,000 | 40 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,716,565,000 | 27 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 712 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 504 |
| 2014-06-30 | Rank |
| U.S. Government agency obligations | $6,695,121,000 | 37 |
| Non-mortgage backed: |
| U.S. government agencies | $7,426,000 | 494 |
| Issued by U.S. government enterprises (GSEs) | $589,376,000 | 39 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,735,005,000 | 41 |
| Issued by G.N.M.A. | $482,411,000 | 39 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,880,903,000 | 26 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 732 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 496 |
| 2014-03-31 | Rank |
| U.S. Government agency obligations | $6,469,508,000 | 38 |
| Non-mortgage backed: |
| U.S. government agencies | $8,070,000 | 460 |
| Issued by U.S. government enterprises (GSEs) | $580,116,000 | 40 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,695,547,000 | 40 |
| Issued by G.N.M.A. | $489,894,000 | 40 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,695,881,000 | 29 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 734 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 458 |
| 2013-12-31 | Rank |
| U.S. Government agency obligations | $6,614,754,000 | 37 |
| Non-mortgage backed: |
| U.S. government agencies | $8,730,000 | 430 |
| Issued by U.S. government enterprises (GSEs) | $571,925,000 | 44 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,740,902,000 | 37 |
| Issued by G.N.M.A. | $487,573,000 | 37 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,805,624,000 | 28 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 687 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 437 |
| 2013-09-30 | Rank |
| U.S. Government agency obligations | $6,889,260,000 | 35 |
| Non-mortgage backed: |
| U.S. government agencies | $9,570,000 | 400 |
| Issued by U.S. government enterprises (GSEs) | $578,386,000 | 39 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,935,565,000 | 35 |
| Issued by G.N.M.A. | $480,160,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,885,579,000 | 26 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 665 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 428 |
| 2013-06-30 | Rank |
| U.S. Government agency obligations | $6,555,760,000 | 35 |
| Non-mortgage backed: |
| U.S. government agencies | $10,450,000 | 374 |
| Issued by U.S. government enterprises (GSEs) | $579,252,000 | 38 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,521,653,000 | 40 |
| Issued by G.N.M.A. | $492,742,000 | 35 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,951,663,000 | 27 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 665 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 386 |
| 2013-03-31 | Rank |
| U.S. Government agency obligations | $6,470,894,000 | 35 |
| Non-mortgage backed: |
| U.S. government agencies | $11,131,000 | 350 |
| Issued by U.S. government enterprises (GSEs) | $615,275,000 | 38 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,520,145,000 | 39 |
| Issued by G.N.M.A. | $507,816,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,816,527,000 | 27 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 619 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 312 |
| 2012-12-31 | Rank |
| U.S. Government agency obligations | $5,759,134,000 | 38 |
| Non-mortgage backed: |
| U.S. government agencies | $11,996,000 | 306 |
| Issued by U.S. government enterprises (GSEs) | $918,282,000 | 23 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,074,666,000 | 53 |
| Issued by G.N.M.A. | $469,663,000 | 37 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,284,527,000 | 29 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 550 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 249 |
| 2012-09-30 | Rank |
| U.S. Government agency obligations | $5,260,469,000 | 37 |
| Non-mortgage backed: |
| U.S. government agencies | $12,710,000 | 256 |
| Issued by U.S. government enterprises (GSEs) | $668,055,000 | 34 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $733,436,000 | 73 |
| Issued by G.N.M.A. | $433,986,000 | 35 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,412,282,000 | 28 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 518 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 240 |
| 2012-06-30 | Rank |
| U.S. Government agency obligations | $5,028,873,000 | 39 |
| Non-mortgage backed: |
| U.S. government agencies | $14,141,000 | 205 |
| Issued by U.S. government enterprises (GSEs) | $675,539,000 | 28 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $692,083,000 | 76 |
| Issued by G.N.M.A. | $353,926,000 | 42 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,293,184,000 | 28 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 482 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 214 |
| 2012-03-31 | Rank |
| U.S. Government agency obligations | $6,022,570,000 | 36 |
| Non-mortgage backed: |
| U.S. government agencies | $14,860,000 | 188 |
| Issued by U.S. government enterprises (GSEs) | $774,727,000 | 29 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,569,493,000 | 45 |
| Issued by G.N.M.A. | $192,723,000 | 62 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,470,767,000 | 27 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 452 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 188 |
| 2011-12-31 | Rank |
| U.S. Government agency obligations | $3,214,414,000 | 56 |
| Non-mortgage backed: |
| U.S. government agencies | $16,125,000 | 141 |
| Issued by U.S. government enterprises (GSEs) | $642,287,000 | 27 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,385,641,000 | 26 |
| Issued by G.N.M.A. | $170,361,000 | 59 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,583 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 388 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 149 |
| 2011-09-30 | Rank |
| U.S. Government agency obligations | $2,563,762,000 | 64 |
| Non-mortgage backed: |
| U.S. government agencies | $17,032,000 | 118 |
| Issued by U.S. government enterprises (GSEs) | $404,216,000 | 46 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,981,161,000 | 28 |
| Issued by G.N.M.A. | $161,353,000 | 63 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,576 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 358 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 121 |
| 2011-06-30 | Rank |
| U.S. Government agency obligations | $2,958,004,000 | 59 |
| Non-mortgage backed: |
| U.S. government agencies | $18,062,000 | 110 |
| Issued by U.S. government enterprises (GSEs) | $580,741,000 | 39 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,198,462,000 | 26 |
| Issued by G.N.M.A. | $160,739,000 | 65 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,565 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 353 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 104 |
| 2011-03-31 | Rank |
| U.S. Government agency obligations | $4,536,174,000 | 44 |
| Non-mortgage backed: |
| U.S. government agencies | $19,004,000 | 99 |
| Issued by U.S. government enterprises (GSEs) | $534,170,000 | 44 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,760,894,000 | 20 |
| Issued by G.N.M.A. | $222,106,000 | 46 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,537 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 347 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 106 |
| 2010-12-31 | Rank |
| U.S. Government agency obligations | $4,120,161,000 | 46 |
| Non-mortgage backed: |
| U.S. government agencies | $19,859,000 | 92 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,404 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $3,868,923,000 | 18 |
| Issued by G.N.M.A. | $231,379,000 | 47 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,521 |
| 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 | $2,709,146,000 | 56 |
| Non-mortgage backed: |
| U.S. government agencies | $21,818,000 | 76 |
| Issued by U.S. government enterprises (GSEs) | $304,499,000 | 72 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,208,342,000 | 24 |
| Issued by G.N.M.A. | $174,487,000 | 50 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,513 |
| 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 | $2,946,853,000 | 53 |
| Non-mortgage backed: |
| U.S. government agencies | $22,583,000 | 74 |
| Issued by U.S. government enterprises (GSEs) | $566,133,000 | 42 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,217,859,000 | 25 |
| Issued by G.N.M.A. | $140,278,000 | 58 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,439 |
| 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 | $2,582,297,000 | 59 |
| Non-mortgage backed: |
| U.S. government agencies | $24,920,000 | 49 |
| Issued by U.S. government enterprises (GSEs) | $796,378,000 | 31 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,636,259,000 | 33 |
| Issued by G.N.M.A. | $124,740,000 | 68 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,423 |
| 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 | $3,622,435,000 | 48 |
| Non-mortgage backed: |
| U.S. government agencies | $26,695,000 | 47 |
| Issued by U.S. government enterprises (GSEs) | $1,396,221,000 | 17 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,097,921,000 | 29 |
| Issued by G.N.M.A. | $101,598,000 | 75 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,418 |
| 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 | $3,605,815,000 | 44 |
| Non-mortgage backed: |
| U.S. government agencies | $19,330,000 | 58 |
| Issued by U.S. government enterprises (GSEs) | $1,363,106,000 | 17 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $2,003,967,000 | 32 |
| Issued by G.N.M.A. | $80,662,000 | 93 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $138,750,000 | 181 |
| 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 | $2,455,837,000 | 59 |
| Non-mortgage backed: |
| U.S. government agencies | $13,800,000 | 79 |
| Issued by U.S. government enterprises (GSEs) | $596,937,000 | 34 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,725,821,000 | 34 |
| Issued by G.N.M.A. | $28,927,000 | 229 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $90,352,000 | 235 |
| 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 | $715,825,000 | 147 |
| Non-mortgage backed: |
| U.S. government agencies | $616,089,000 | 3 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,898 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $94,325,000 | 327 |
| Issued by G.N.M.A. | $5,411,000 | 900 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,397 |
| 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 | $114,930,000 | 726 |
| Non-mortgage backed: |
| U.S. government agencies | $6,902,000 | 125 |
| Issued by U.S. government enterprises (GSEs) | $0 | 6,045 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $102,641,000 | 306 |
| Issued by G.N.M.A. | $5,387,000 | 802 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,412 |
| 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 | $109,014,000 | 738 |
| Non-mortgage backed: |
| U.S. government agencies | $3,929,000 | 173 |
| Issued by U.S. government enterprises (GSEs) | $0 | 6,150 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $105,085,000 | 299 |
| Issued by G.N.M.A. | $0 | 3,609 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,364 |
| 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 | $108,868,000 | 737 |
| Non-mortgage backed: |
| U.S. government agencies | $2,068,000 | 240 |
| Issued by U.S. government enterprises (GSEs) | $0 | 6,260 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $106,800,000 | 304 |
| Issued by G.N.M.A. | $0 | 3,552 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,399 |
| 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 | $102,593,000 | 797 |
| Non-mortgage backed: |
| U.S. government agencies | $1,070,000 | 309 |
| Issued by U.S. government enterprises (GSEs) | $0 | 6,390 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $101,523,000 | 311 |
| Issued by G.N.M.A. | $0 | 3,524 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,396 |
| 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 | $100,278,000 | 814 |
| Non-mortgage backed: |
| U.S. government agencies | $1,085,000 | 292 |
| Issued by U.S. government enterprises (GSEs) | $0 | 6,624 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $99,193,000 | 282 |
| Issued by G.N.M.A. | $0 | 3,534 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,350 |
| 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 | $94,301,000 | 865 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 781 |
| Issued by U.S. government enterprises (GSEs) | $0 | 6,729 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $94,301,000 | 283 |
| Issued by G.N.M.A. | $0 | 3,520 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,327 |
| 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 | $81,552,000 | 1,041 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 790 |
| Issued by U.S. government enterprises (GSEs) | $0 | 6,766 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $81,552,000 | 319 |
| Issued by G.N.M.A. | $0 | 3,514 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,312 |
| 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 | $65,187,000 | 1,292 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 786 |
| Issued by U.S. government enterprises (GSEs) | $0 | 6,804 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $65,187,000 | 370 |
| Issued by G.N.M.A. | $0 | 3,555 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,314 |
| 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 | $53,528,000 | 1,606 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 798 |
| Issued by U.S. government enterprises (GSEs) | $0 | 6,897 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $53,528,000 | 432 |
| Issued by G.N.M.A. | $0 | 3,609 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,329 |
| 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 | $36,428,000 | 2,289 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 801 |
| Issued by U.S. government enterprises (GSEs) | $0 | 6,977 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $36,428,000 | 611 |
| Issued by G.N.M.A. | $0 | 3,658 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,319 |
| 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 | $24,720,000 | 3,115 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 816 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,000 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $24,720,000 | 835 |
| Issued by G.N.M.A. | $0 | 3,736 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,314 |
| 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 | $19,971,000 | 3,692 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 814 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,032 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $19,971,000 | 979 |
| Issued by G.N.M.A. | $0 | 3,785 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,310 |
| 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 | $19,483,000 | 3,732 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 802 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,066 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $19,483,000 | 1,013 |
| Issued by G.N.M.A. | $0 | 3,839 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,332 |
| 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 | $18,206,000 | 3,875 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 801 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,080 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $18,206,000 | 1,075 |
| Issued by G.N.M.A. | $0 | 3,904 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,344 |
| 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 | $12,031,000 | 4,991 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 784 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,127 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $12,031,000 | 1,496 |
| Issued by G.N.M.A. | $0 | 3,967 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,375 |
| 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 | $7,205,000 | 6,259 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 801 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,189 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $7,205,000 | 2,114 |
| Issued by G.N.M.A. | $0 | 4,067 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,424 |
| 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 | $4,049,000 | 7,243 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 823 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,195 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $4,049,000 | 2,811 |
| Issued by G.N.M.A. | $0 | 4,147 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,456 |
| 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 | $0 | 8,656 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 836 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,243 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $0 | 5,822 |
| Issued by G.N.M.A. | $0 | 4,199 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $0 | 3,472 |
| 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 |
