Fidelity Flex U.S. Bond Index Fund (FIBUX) is an MF managed by Fidelity. Its largest position is FIDELITY REVERE STREET TRUST (null), representing 1.05% of fund assets.
Fidelity Flex U.S. Bond Index Fund Portfolio Holdings
Source: SEC Form N-PORT institutional portfolio disclosures
- Ticker:
- FIBUX
- Type:
- MF
- Manager:
- Fidelity
- Total Assets:
- —
- Report Date:
- Feb 28, 2026
- Filing Date:
- Apr 24, 2026
| Holding | Weight | Market Value | Shares |
|---|---|---|---|
|
-
FIDELITY REVERE STREET TRUST
|
1.05% | $39,530,686.16 | 39,522,782 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.35% | $13,020,614.91 | 12,975,000 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.32% | $11,977,257.52 | 11,825,000 |
|
-
FANNIE MAE POOL MBS 30YR TBA
|
0.31% | $11,753,015.04 | 11,700,000 |
|
-
GINNIE MAE II POOL MBS 30YR TBA
|
0.30% | $11,325,167.94 | 11,100,000 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.30% | $11,155,328.73 | 11,025,000 |
|
-
FNMA
|
0.26% | $9,669,021.16 | 10,236,924 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.23% | $8,493,207.69 | 8,475,000 |
|
-
FANNIE MAE
|
0.22% | $8,467,476.32 | 10,141,243 |
|
-
GNMA
|
0.21% | $7,966,734.44 | 9,400,589 |
|
-
FNMA GTD MTG PASS THRU CTF
|
0.21% | $7,914,082.81 | 9,129,196 |
|
-
FEDERAL NATIONAL MORTGAGE ASSOCIATION
|
0.20% | $7,527,946.19 | 8,325,000 |
|
-
FANNIE MAE
|
0.19% | $7,301,670.31 | 8,731,919 |
|
-
FANNIE MAE
|
0.19% | $7,264,010.24 | 8,699,888 |
|
-
Fabrinet
|
0.19% | $7,102,531.92 | 8,484,262 |
|
-
GNMA
|
0.17% | $6,517,747.80 | 7,383,735 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.16% | $6,092,004.24 | 5,975,000 |
|
-
FREDDIE MAC
|
0.15% | $5,720,819.69 | 6,229,654 |
|
-
FEDERAL HOME LOAN MORTGAGE CORP
|
0.14% | $5,340,826.94 | 6,121,130 |
|
-
FEDERAL NATIONAL MORTGAGE ASSOCIATION
|
0.13% | $4,865,464.09 | 5,875,000 |
|
-
FEDERAL NATIONAL MORTGAGE ASSOCIATION
|
0.13% | $4,819,312.86 | 5,771,947 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.12% | $4,698,569.71 | 4,637,908 |
|
-
FED HOME LOAN MTG CORP - GOLD
|
0.12% | $4,635,975.19 | 5,271,759 |
|
-
GNMA
|
0.12% | $4,431,675.30 | 4,829,850 |
|
-
FNMA GTD MTG PASS THRU CTF
|
0.12% | $4,354,088.73 | 4,545,160 |
|
-
FNMA GTD MTG PASS THRU CTF
|
0.11% | $4,238,068.97 | 4,068,102 |
|
-
FEDERAL NATIONAL MORTGAGE ASSOCIATION
|
0.11% | $4,193,777.46 | 4,450,000 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.11% | $4,161,680.61 | 4,141,864 |
|
-
FEDERAL HOME LOAN BANK
|
0.10% | $3,927,028.78 | 3,863,409 |
|
-
FEDERAL NATIONAL MORTGAGE ASSOCIATION
|
0.10% | $3,857,742.14 | 3,800,000 |
|
-
FNMA GTD MTG PASS THRU CTF
|
0.10% | $3,824,107.72 | 4,573,173 |
|
-
FNMA GTD MTG PASS THRU CTF
|
0.10% | $3,809,588.45 | 4,342,844 |
|
-
FEDERAL HOME LOAN MORTGAGE CORP
|
0.10% | $3,769,841.04 | 4,325,268 |
|
-
FREDDIE MAC
|
0.10% | $3,731,461.74 | 4,462,379 |
|
-
FREDDIE MAC
|
0.10% | $3,728,239.68 | 4,175,461 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.10% | $3,712,037.49 | 4,045,555 |
|
-
FEDERAL NATIONAL MORTGAGE ASSOCIATION
|
0.10% | $3,667,028.37 | 3,575,000 |
|
-
FEDERAL NATIONAL MORTGAGE ASSOCIATION
|
0.09% | $3,557,695.76 | 4,254,576 |
|
-
FANNIE MAE POOL MBS 30YR TBA
|
0.09% | $3,556,328.30 | 3,500,000 |
|
-
FNMA GTD MTG PASS THRU CTF
|
0.09% | $3,550,237.38 | 3,888,506 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.09% | $3,457,632.85 | 3,500,000 |
|
-
GNMA
|
0.09% | $3,410,557.17 | 3,444,703 |
|
-
FANNIE MAE
|
0.09% | $3,354,049.10 | 4,015,541 |
|
-
FANNIE MAE
|
0.09% | $3,337,719.58 | 3,850,187 |
|
-
FEDERAL NATIONAL MORTGAGE ASSOCIATION
|
0.09% | $3,334,009.91 | 3,850,000 |
|
-
FNMA GTD MTG PASS THRU CTF
|
0.09% | $3,227,553.63 | 3,865,544 |
|
-
GNMA
|
0.08% | $3,192,409.62 | 3,401,191 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.08% | $3,179,265.88 | 3,400,000 |
|
-
FREDDIE MAC
|
0.08% | $3,174,354.82 | 3,121,191 |
|
-
FREDDIE MAC
|
0.08% | $3,142,182.30 | 3,605,133 |
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