| 2023-06-30 | Rank |
| U.S. Government agency obligations | $34,291,124,000 | 16 |
| 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. | $3,726,749,000 | 36 |
| Issued by G.N.M.A. | $194,415,000 | 50 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $21,045,806,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,812,501,000 | 13 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $5,535,849,000 | 7 |
| 2023-03-31 | Rank |
| U.S. Government agency obligations | $35,731,535,000 | 15 |
| 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. | $3,870,844,000 | 37 |
| Issued by G.N.M.A. | $205,684,000 | 53 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $21,990,322,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,948,987,000 | 13 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $5,735,568,000 | 6 |
| 2022-12-31 | Rank |
| U.S. Government agency obligations | $34,570,929,000 | 15 |
| 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. | $3,885,416,000 | 39 |
| Issued by G.N.M.A. | $214,815,000 | 51 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $21,018,802,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,837,107,000 | 14 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $5,647,764,000 | 7 |
| 2022-09-30 | Rank |
| U.S. Government agency obligations | $34,791,834,000 | 15 |
| 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. | $3,945,061,000 | 41 |
| Issued by G.N.M.A. | $225,401,000 | 50 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $21,055,007,000 | 4 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,880,534,000 | 13 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $5,723,126,000 | 7 |
| 2022-06-30 | Rank |
| U.S. Government agency obligations | $40,153,912,000 | 15 |
| 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. | $4,278,821,000 | 41 |
| Issued by G.N.M.A. | $244,593,000 | 49 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $22,752,160,000 | 4 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,140,190,000 | 14 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $8,733,058,000 | 6 |
| 2022-03-31 | Rank |
| U.S. Government agency obligations | $39,707,821,000 | 15 |
| 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. | $4,630,186,000 | 39 |
| Issued by G.N.M.A. | $266,355,000 | 48 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $22,622,546,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,302,211,000 | 14 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $7,905,482,000 | 7 |
| 2021-12-31 | Rank |
| U.S. Government agency obligations | $41,432,265,000 | 16 |
| 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. | $4,993,908,000 | 35 |
| Issued by G.N.M.A. | $293,469,000 | 47 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $23,315,348,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,613,427,000 | 13 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $8,715,626,000 | 6 |
| 2021-09-30 | Rank |
| U.S. Government agency obligations | $37,205,214,000 | 16 |
| 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. | $5,264,592,000 | 33 |
| Issued by G.N.M.A. | $327,865,000 | 45 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $18,590,127,000 | 5 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,642,313,000 | 13 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $9,379,759,000 | 6 |
| 2021-06-30 | Rank |
| U.S. Government agency obligations | $35,875,922,000 | 16 |
| 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. | $4,719,341,000 | 31 |
| Issued by G.N.M.A. | $365,915,000 | 41 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $17,235,176,000 | 6 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,726,630,000 | 12 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $9,828,285,000 | 6 |
| 2021-03-31 | Rank |
| U.S. Government agency obligations | $35,825,461,000 | 16 |
| 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. | $3,851,877,000 | 39 |
| Issued by G.N.M.A. | $410,815,000 | 39 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $17,760,554,000 | 6 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $3,615,761,000 | 11 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $10,185,867,000 | 4 |
| 2020-12-31 | Rank |
| U.S. Government agency obligations | $34,105,625,000 | 17 |
| 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. | $1,979,538,000 | 58 |
| Issued by G.N.M.A. | $458,661,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $18,047,615,000 | 5 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $2,829,131,000 | 14 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $10,790,076,000 | 3 |
| 2020-09-30 | Rank |
| U.S. Government agency obligations | $30,763,979,000 | 17 |
| 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. | $1,124,762,000 | 75 |
| Issued by G.N.M.A. | $514,194,000 | 35 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $18,022,103,000 | 5 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $964,396,000 | 22 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $10,137,904,000 | 3 |
| 2020-06-30 | Rank |
| U.S. Government agency obligations | $29,170,785,000 | 18 |
| 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. | $1,227,437,000 | 67 |
| Issued by G.N.M.A. | $577,130,000 | 36 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,833,424,000 | 5 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $969,985,000 | 22 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $9,562,172,000 | 3 |
| 2020-03-31 | Rank |
| U.S. Government agency obligations | $30,066,775,000 | 17 |
| 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. | $1,305,920,000 | 63 |
| Issued by G.N.M.A. | $622,859,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $17,400,290,000 | 5 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $971,709,000 | 21 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $9,765,341,000 | 3 |
| 2019-12-31 | Rank |
| U.S. Government agency obligations | $31,574,730,000 | 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. | $1,468,314,000 | 60 |
| Issued by G.N.M.A. | $654,726,000 | 36 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $18,474,586,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $993,679,000 | 20 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $9,942,777,000 | 3 |
| 2019-09-30 | Rank |
| U.S. Government agency obligations | $32,656,173,000 | 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. | $1,603,110,000 | 56 |
| Issued by G.N.M.A. | $788,183,000 | 33 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $19,608,202,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $998,914,000 | 18 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $9,554,288,000 | 3 |
| 2019-06-30 | Rank |
| U.S. Government agency obligations | $32,182,750,000 | 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. | $1,682,840,000 | 57 |
| Issued by G.N.M.A. | $834,170,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $20,046,693,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $999,089,000 | 17 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $8,515,795,000 | 3 |
| 2019-03-31 | Rank |
| U.S. Government agency obligations | $31,874,177,000 | 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. | $1,740,867,000 | 57 |
| Issued by G.N.M.A. | $876,214,000 | 32 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $20,842,571,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $907,854,000 | 17 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $7,403,354,000 | 3 |
| 2018-12-31 | Rank |
| U.S. Government agency obligations | $30,863,701,000 | 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. | $1,682,806,000 | 58 |
| Issued by G.N.M.A. | $911,677,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $20,983,568,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $914,786,000 | 18 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $6,268,544,000 | 4 |
| 2018-09-30 | Rank |
| U.S. Government agency obligations | $30,127,551,000 | 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. | $1,214,437,000 | 67 |
| Issued by G.N.M.A. | $954,557,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $21,522,342,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $925,743,000 | 17 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $5,409,987,000 | 6 |
| 2018-06-30 | Rank |
| U.S. Government agency obligations | $29,557,197,000 | 15 |
| 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. | $889,236,000 | 77 |
| Issued by G.N.M.A. | $1,009,140,000 | 33 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $21,592,265,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $808,398,000 | 17 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $5,156,875,000 | 7 |
| 2018-03-31 | Rank |
| U.S. Government agency obligations | $29,988,543,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | $1,881,000 | 1,280 |
| Issued by U.S. government enterprises (GSEs) | $99,853,000 | 177 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $828,009,000 | 80 |
| Issued by G.N.M.A. | $1,067,103,000 | 33 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $22,517,934,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $809,621,000 | 17 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $4,664,142,000 | 7 |
| 2017-12-31 | Rank |
| U.S. Government agency obligations | $29,880,693,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | $1,945,000 | 1,289 |
| Issued by U.S. government enterprises (GSEs) | $109,947,000 | 156 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $885,743,000 | 78 |
| Issued by G.N.M.A. | $1,127,710,000 | 32 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $22,715,256,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $811,440,000 | 18 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $4,228,652,000 | 8 |
| 2017-09-30 | Rank |
| U.S. Government agency obligations | $29,197,061,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | $2,177,000 | 1,226 |
| Issued by U.S. government enterprises (GSEs) | $110,676,000 | 161 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $943,248,000 | 73 |
| Issued by G.N.M.A. | $1,198,592,000 | 31 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $23,188,124,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $485,316,000 | 20 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $3,268,928,000 | 10 |
| 2017-06-30 | Rank |
| U.S. Government agency obligations | $28,571,716,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | $2,264,000 | 1,204 |
| Issued by U.S. government enterprises (GSEs) | $120,854,000 | 151 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $997,468,000 | 66 |
| Issued by G.N.M.A. | $1,270,664,000 | 30 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $22,507,200,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $485,746,000 | 20 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $3,187,520,000 | 10 |
| 2017-03-31 | Rank |
| U.S. Government agency obligations | $28,526,367,000 | 12 |
| Non-mortgage backed: |
| U.S. government agencies | $2,358,000 | 1,159 |
| Issued by U.S. government enterprises (GSEs) | $137,560,000 | 130 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,002,929,000 | 63 |
| Issued by G.N.M.A. | $1,343,694,000 | 29 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $22,536,864,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $486,100,000 | 19 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $3,016,862,000 | 12 |
| 2016-12-31 | Rank |
| U.S. Government agency obligations | $30,352,179,000 | 11 |
| Non-mortgage backed: |
| U.S. government agencies | $2,673,000 | 1,097 |
| Issued by U.S. government enterprises (GSEs) | $136,513,000 | 131 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,058,445,000 | 59 |
| Issued by G.N.M.A. | $1,416,373,000 | 29 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $24,811,797,000 | 2 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $486,437,000 | 17 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $2,439,941,000 | 13 |
| 2016-09-30 | Rank |
| U.S. Government agency obligations | $23,941,473,000 | 15 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,974 |
| 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. | $1,049,691,000 | 59 |
| Issued by G.N.M.A. | $1,493,203,000 | 27 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $20,007,906,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 878 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $1,390,673,000 | 17 |
| 2016-06-30 | Rank |
| U.S. Government agency obligations | $19,329,585,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,945 |
| 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. | $1,112,893,000 | 58 |
| Issued by G.N.M.A. | $1,600,323,000 | 29 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,616,369,000 | 4 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 836 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 746 |
| 2016-03-31 | Rank |
| U.S. Government agency obligations | $19,251,757,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $1,000 | 1,941 |
| 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. | $1,167,735,000 | 58 |
| Issued by G.N.M.A. | $1,684,678,000 | 28 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,399,343,000 | 4 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 825 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 720 |
| 2015-12-31 | Rank |
| U.S. Government agency obligations | $19,060,206,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $3,000 | 1,922 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,429 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,205,355,000 | 58 |
| Issued by G.N.M.A. | $1,685,917,000 | 25 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,168,931,000 | 4 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 795 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 672 |
| 2015-09-30 | Rank |
| U.S. Government agency obligations | $19,248,795,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $6,000 | 1,908 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,558 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,272,280,000 | 53 |
| Issued by G.N.M.A. | $1,674,621,000 | 23 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,301,888,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 764 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 630 |
| 2015-06-30 | Rank |
| U.S. Government agency obligations | $19,204,631,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $11,000 | 1,878 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,668 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,328,065,000 | 53 |
| Issued by G.N.M.A. | $1,662,397,000 | 23 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,214,158,000 | 3 |
| Commercial mortgage-backed: |
| Commercial mortgage pass-through securities - FNMA, FHLMC, or GNMA | $0 | 733 |
| Other commercial MBS Issued or guaranteed by US Govrnmnt agencies or sponsored | $0 | 613 |
| 2015-03-31 | Rank |
| U.S. Government agency obligations | $18,047,844,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $16,000 | 1,866 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,730 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $684,995,000 | 78 |
| Issued by G.N.M.A. | $1,451,412,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $15,911,421,000 | 4 |
| 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 | $18,298,925,000 | 18 |
| Non-mortgage backed: |
| U.S. government agencies | $21,000 | 1,811 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,777 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $732,211,000 | 69 |
| Issued by G.N.M.A. | $1,542,107,000 | 21 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,024,586,000 | 3 |
| 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 | $17,162,770,000 | 18 |
| Non-mortgage backed: |
| U.S. government agencies | $25,000 | 1,800 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,846 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $779,562,000 | 68 |
| Issued by G.N.M.A. | $1,397,231,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $14,985,952,000 | 5 |
| 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 | $17,383,405,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $30,000 | 1,813 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,882 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $834,790,000 | 67 |
| Issued by G.N.M.A. | $1,469,683,000 | 19 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $15,078,902,000 | 4 |
| 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 | $17,106,526,000 | 18 |
| Non-mortgage backed: |
| U.S. government agencies | $34,000 | 1,793 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,947 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $879,570,000 | 66 |
| Issued by G.N.M.A. | $952,403,000 | 24 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $15,274,519,000 | 5 |
| 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 | $17,022,142,000 | 18 |
| Non-mortgage backed: |
| U.S. government agencies | $39,000 | 1,774 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,988 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $824,159,000 | 67 |
| Issued by G.N.M.A. | $461,646,000 | 40 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $15,736,298,000 | 5 |
| 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 | $17,356,377,000 | 17 |
| Non-mortgage backed: |
| U.S. government agencies | $43,000 | 1,743 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,027 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $694,692,000 | 74 |
| Issued by G.N.M.A. | $67,445,000 | 153 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,594,197,000 | 5 |
| 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 | $17,918,766,000 | 17 |
| Non-mortgage backed: |
| U.S. government agencies | $50,000 | 1,713 |
| Issued by U.S. government enterprises (GSEs) | $0 | 4,998 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $510,333,000 | 89 |
| Issued by G.N.M.A. | $73,296,000 | 131 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $17,335,087,000 | 5 |
| 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 | $17,108,338,000 | 17 |
| Non-mortgage backed: |
| U.S. government agencies | $56,000 | 1,693 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,014 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $407,160,000 | 107 |
| Issued by G.N.M.A. | $79,791,000 | 127 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,621,331,000 | 5 |
| 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 | $15,914,998,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $63,000 | 1,610 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,090 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $453,726,000 | 103 |
| Issued by G.N.M.A. | $84,645,000 | 119 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $15,376,564,000 | 6 |
| 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 | $16,016,104,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $70,000 | 1,539 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,169 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $506,334,000 | 99 |
| Issued by G.N.M.A. | $91,607,000 | 118 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $15,418,093,000 | 6 |
| 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 | $17,463,238,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $77,000 | 1,467 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,301 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $555,304,000 | 89 |
| Issued by G.N.M.A. | $96,940,000 | 113 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,810,917,000 | 6 |
| 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 | $17,559,168,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $83,000 | 1,380 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,437 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $611,268,000 | 86 |
| Issued by G.N.M.A. | $102,241,000 | 106 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $16,845,576,000 | 6 |
| 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 | $18,030,957,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $93,000 | 1,180 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,117 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $670,907,000 | 63 |
| Issued by G.N.M.A. | $106,942,000 | 92 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $17,253,015,000 | 6 |
| 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 | $18,689,878,000 | 18 |
| Non-mortgage backed: |
| U.S. government agencies | $151,000 | 1,086 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,261 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $736,581,000 | 60 |
| Issued by G.N.M.A. | $112,962,000 | 83 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $17,840,184,000 | 6 |
| 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 | $18,525,687,000 | 17 |
| Non-mortgage backed: |
| U.S. government agencies | $162,000 | 1,054 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,346 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $798,786,000 | 56 |
| Issued by G.N.M.A. | $118,466,000 | 81 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $17,608,273,000 | 6 |
| 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 | $19,269,928,000 | 15 |
| Non-mortgage backed: |
| U.S. government agencies | $172,000 | 993 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,421 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $858,490,000 | 55 |
| Issued by G.N.M.A. | $122,491,000 | 77 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $18,288,775,000 | 6 |
| 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 | $21,734,343,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | $181,000 | 972 |
| 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. | $941,601,000 | 49 |
| Issued by G.N.M.A. | $127,488,000 | 70 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $20,665,073,000 | 4 |
| 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 | $21,067,078,000 | 13 |
| Non-mortgage backed: |
| U.S. government agencies | $237,000 | 900 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,493 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,046,219,000 | 43 |
| Issued by G.N.M.A. | $134,655,000 | 62 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $19,885,967,000 | 3 |
| 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 | $19,572,918,000 | 14 |
| Non-mortgage backed: |
| U.S. government agencies | $252,000 | 880 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,662 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,142,340,000 | 43 |
| Issued by G.N.M.A. | $140,718,000 | 57 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $18,289,608,000 | 2 |
| 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 | $16,339,592,000 | 16 |
| Non-mortgage backed: |
| U.S. government agencies | $279,000 | 859 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,725 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,210,114,000 | 39 |
| Issued by G.N.M.A. | $145,009,000 | 55 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $14,984,190,000 | 4 |
| 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 | $16,434,528,000 | 17 |
| Non-mortgage backed: |
| U.S. government agencies | $619,000 | 670 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,731 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,276,856,000 | 41 |
| Issued by G.N.M.A. | $150,877,000 | 51 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $15,006,176,000 | 1 |
| 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 | $15,206,975,000 | 17 |
| Non-mortgage backed: |
| U.S. government agencies | $636,000 | 635 |
| Issued by U.S. government enterprises (GSEs) | $0 | 5,757 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,366,947,000 | 37 |
| Issued by G.N.M.A. | $158,744,000 | 43 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $13,680,648,000 | 1 |
| 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 | $11,823,228,000 | 17 |
| Non-mortgage backed: |
| U.S. government agencies | $658,000 | 600 |
| Issued by U.S. government enterprises (GSEs) | $1,700,000,000 | 9 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,434,406,000 | 40 |
| Issued by G.N.M.A. | $164,889,000 | 38 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $8,523,275,000 | 6 |
| 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 | $8,206,165,000 | 23 |
| Non-mortgage backed: |
| U.S. government agencies | $731,000 | 503 |
| 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. | $1,528,396,000 | 37 |
| Issued by G.N.M.A. | $172,420,000 | 40 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,504,618,000 | 7 |
| 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 | $8,090,855,000 | 22 |
| Non-mortgage backed: |
| U.S. government agencies | $782,000 | 464 |
| 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. | $1,389,497,000 | 43 |
| Issued by G.N.M.A. | $177,390,000 | 36 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,523,186,000 | 8 |
| 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 | $8,002,772,000 | 20 |
| Non-mortgage backed: |
| U.S. government agencies | $835,000 | 385 |
| 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. | $1,356,017,000 | 41 |
| Issued by G.N.M.A. | $178,160,000 | 29 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,467,760,000 | 7 |
| 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 | $7,928,376,000 | 23 |
| Non-mortgage backed: |
| U.S. government agencies | $1,121,000 | 308 |
| 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. | $1,394,990,000 | 41 |
| Issued by G.N.M.A. | $182,711,000 | 25 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,349,554,000 | 6 |
| 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 | $8,032,781,000 | 21 |
| Non-mortgage backed: |
| U.S. government agencies | $1,151,000 | 299 |
| 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. | $1,320,143,000 | 44 |
| Issued by G.N.M.A. | $195,095,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,516,392,000 | 5 |
| 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 | $7,552,303,000 | 22 |
| Non-mortgage backed: |
| U.S. government agencies | $1,269,000 | 283 |
| Issued by U.S. government enterprises (GSEs) | $99,000 | 6,613 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,226,580,000 | 42 |
| Issued by G.N.M.A. | $163,941,000 | 23 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,160,414,000 | 4 |
| 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 | $7,519,707,000 | 25 |
| Non-mortgage backed: |
| U.S. government agencies | $1,324,000 | 275 |
| Issued by U.S. government enterprises (GSEs) | $98,000 | 6,722 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,002,237,000 | 49 |
| Issued by G.N.M.A. | $169,912,000 | 27 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,346,136,000 | 4 |
| 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 | $7,417,065,000 | 23 |
| Non-mortgage backed: |
| U.S. government agencies | $1,366,000 | 273 |
| Issued by U.S. government enterprises (GSEs) | $97,000 | 6,759 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $935,015,000 | 50 |
| Issued by G.N.M.A. | $168,766,000 | 26 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,311,821,000 | 4 |
| 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 | $7,385,741,000 | 23 |
| Non-mortgage backed: |
| U.S. government agencies | $1,516,000 | 267 |
| 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. | $749,151,000 | 60 |
| Issued by G.N.M.A. | $131,326,000 | 34 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,503,748,000 | 3 |
| 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 | $7,402,931,000 | 23 |
| Non-mortgage backed: |
| U.S. government agencies | $1,664,000 | 242 |
| Issued by U.S. government enterprises (GSEs) | $76,736,000 | 449 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $187,785,000 | 161 |
| Issued by G.N.M.A. | $136,436,000 | 33 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $7,000,310,000 | 2 |
| 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 | $7,053,204,000 | 25 |
| Non-mortgage backed: |
| U.S. government agencies | $2,109,000 | 207 |
| Issued by U.S. government enterprises (GSEs) | $205,254,000 | 161 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $55,388,000 | 430 |
| Issued by G.N.M.A. | $143,524,000 | 32 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,646,929,000 | 3 |
| 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 | $6,741,817,000 | 26 |
| Non-mortgage backed: |
| U.S. government agencies | $2,369,000 | 197 |
| Issued by U.S. government enterprises (GSEs) | $9,412,000 | 3,771 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $39,888,000 | 576 |
| Issued by G.N.M.A. | $149,961,000 | 32 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,540,187,000 | 4 |
| 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 | $6,671,380,000 | 28 |
| Non-mortgage backed: |
| U.S. government agencies | $2,662,000 | 179 |
| Issued by U.S. government enterprises (GSEs) | $62,156,000 | 609 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $44,992,000 | 522 |
| Issued by G.N.M.A. | $160,444,000 | 32 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,401,126,000 | 4 |
| 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 | $6,761,394,000 | 28 |
| Non-mortgage backed: |
| U.S. government agencies | $2,797,000 | 179 |
| Issued by U.S. government enterprises (GSEs) | $254,825,000 | 126 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $50,218,000 | 478 |
| Issued by G.N.M.A. | $172,443,000 | 32 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,281,111,000 | 3 |
| 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 | $6,730,706,000 | 29 |
| Non-mortgage backed: |
| U.S. government agencies | $11,829,000 | 71 |
| Issued by U.S. government enterprises (GSEs) | $227,131,000 | 140 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $56,422,000 | 437 |
| Issued by G.N.M.A. | $186,846,000 | 33 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,248,478,000 | 4 |
| 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 | $6,877,823,000 | 28 |
| Non-mortgage backed: |
| U.S. government agencies | $8,170,000 | 60 |
| Issued by U.S. government enterprises (GSEs) | $229,878,000 | 133 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $63,899,000 | 410 |
| Issued by G.N.M.A. | $203,598,000 | 30 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,372,278,000 | 4 |
| 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 | $6,706,224,000 | 31 |
| Non-mortgage backed: |
| U.S. government agencies | $3,471,000 | 115 |
| Issued by U.S. government enterprises (GSEs) | $122,606,000 | 267 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $70,998,000 | 398 |
| Issued by G.N.M.A. | $218,886,000 | 32 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,290,263,000 | 4 |
| 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 | $6,855,111,000 | 28 |
| Non-mortgage backed: |
| U.S. government agencies | $3,755,000 | 124 |
| Issued by U.S. government enterprises (GSEs) | $195,629,000 | 160 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $79,666,000 | 372 |
| Issued by G.N.M.A. | $237,578,000 | 31 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,338,483,000 | 4 |
| 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 | $6,651,622,000 | 32 |
| Non-mortgage backed: |
| U.S. government agencies | $10,005,000 | 60 |
| 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. | $65,097,000 | 432 |
| Issued by G.N.M.A. | $261,959,000 | 31 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,314,561,000 | 4 |
| 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 | $6,598,742,000 | 32 |
| Non-mortgage backed: |
| U.S. government agencies | $9,182,000 | 70 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,303 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $74,387,000 | 397 |
| Issued by G.N.M.A. | $288,172,000 | 30 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,227,001,000 | 4 |
| 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 | $6,632,163,000 | 30 |
| Non-mortgage backed: |
| U.S. government agencies | $4,628,000 | 114 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,275 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $86,142,000 | 361 |
| Issued by G.N.M.A. | $328,643,000 | 25 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,212,750,000 | 4 |
| 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 | $6,722,780,000 | 32 |
| Non-mortgage backed: |
| U.S. government agencies | $4,848,000 | 118 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,296 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $97,002,000 | 339 |
| Issued by G.N.M.A. | $364,360,000 | 26 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,256,570,000 | 5 |
| 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 | $6,725,579,000 | 29 |
| Non-mortgage backed: |
| U.S. government agencies | $5,514,000 | 107 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,251 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $113,615,000 | 288 |
| Issued by G.N.M.A. | $476,295,000 | 22 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,130,155,000 | 5 |
| 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 | $6,790,100,000 | 29 |
| Non-mortgage backed: |
| U.S. government agencies | $6,007,000 | 104 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,215 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $136,513,000 | 241 |
| Issued by G.N.M.A. | $452,552,000 | 25 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,195,028,000 | 8 |
| 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 | $7,678,158,000 | 25 |
| Non-mortgage backed: |
| U.S. government agencies | $6,830,000 | 88 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,305 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $161,341,000 | 196 |
| Issued by G.N.M.A. | $554,024,000 | 24 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,955,963,000 | 7 |
| 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 | $7,531,385,000 | 24 |
| Non-mortgage backed: |
| U.S. government agencies | $6,962,000 | 90 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,332 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $182,510,000 | 168 |
| Issued by G.N.M.A. | $490,204,000 | 31 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $6,851,709,000 | 4 |
| 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 | $4,459,985,000 | 34 |
| Non-mortgage backed: |
| U.S. government agencies | $9,575,000 | 74 |
| Issued by U.S. government enterprises (GSEs) | $0 | 7,588 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $289,766,000 | 99 |
| Issued by G.N.M.A. | $725,659,000 | 24 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,434,985,000 | 8 |
| 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 | $6,131,811,000 | 23 |
| Non-mortgage backed: |
| U.S. government agencies | $11,380,000 | 63 |
| Issued by U.S. government enterprises (GSEs) | $865,837,000 | 32 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $396,637,000 | 63 |
| Issued by G.N.M.A. | $951,378,000 | 16 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,906,579,000 | 9 |
| 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 | $5,569,671,000 | 19 |
| Non-mortgage backed: |
| U.S. government agencies | $14,178,000 | 53 |
| Issued by U.S. government enterprises (GSEs) | $330,000 | 8,076 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $567,919,000 | 57 |
| Issued by G.N.M.A. | $1,113,816,000 | 16 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,873,428,000 | 8 |
| 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 | $4,647,861,000 | 23 |
| Non-mortgage backed: |
| U.S. government agencies | $20,506,000 | 44 |
| Issued by U.S. government enterprises (GSEs) | $283,621,000 | 62 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $757,927,000 | 52 |
| Issued by G.N.M.A. | $1,431,048,000 | 10 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $2,154,759,000 | 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 |
| 1997-12-31 | Rank |
| U.S. Government agency obligations | $7,025,824,000 | 9 |
| Non-mortgage backed: |
| U.S. government agencies | $25,970,000 | 31 |
| Issued by U.S. government enterprises (GSEs) | $51,017,000 | 455 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $1,154,730,000 | 27 |
| Issued by G.N.M.A. | $1,830,640,000 | 8 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $3,963,467,000 | 4 |
| 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 | $3,015,018,000 | 28 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,552 |
| Issued by U.S. government enterprises (GSEs) | $0 | 8,702 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $104,276,000 | 213 |
| Issued by G.N.M.A. | $1,718,181,000 | 7 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,192,561,000 | 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 |
| 1995-12-31 | Rank |
| U.S. Government agency obligations | $2,339,755,000 | 37 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,692 |
| Issued by U.S. government enterprises (GSEs) | $0 | 8,955 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $93,996,000 | 218 |
| Issued by G.N.M.A. | $1,393,185,000 | 10 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $852,574,000 | 30 |
| 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 | $3,075,594,000 | 22 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,632 |
| Issued by U.S. government enterprises (GSEs) | $10,121,000 | 2,155 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $114,659,000 | 172 |
| Issued by G.N.M.A. | $2,105,342,000 | 7 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $845,472,000 | 33 |
| 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 | $3,080,621,000 | 18 |
| Non-mortgage backed: |
| U.S. government agencies | $0 | 1,434 |
| Issued by U.S. government enterprises (GSEs) | $3,154,000 | 4,964 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $153,659,000 | 137 |
| Issued by G.N.M.A. | $1,887,854,000 | 7 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,035,954,000 | 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 |
| 1992-12-31 | Rank |
| U.S. Government agency obligations | $1,943,592,000 | 29 |
| Non-mortgage backed: |
| U.S. government agencies | $50,000 | 1,287 |
| Issued by U.S. government enterprises (GSEs) | $99,000 | 9,110 |
| Residential mortgage backed: |
| Pass throughs: |
| Issued by F.N.M.A. and F.H.L.M.C. | $223,690,000 | 90 |
| Issued by G.N.M.A. | $435,340,000 | 19 |
| Collateralized mortgage obligations (CMOs) and REMICS: |
| CMOs issued by government agencies or sponsored agencies | $1,284,413,000 | 16 |
| 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 |
