FUBFX Holdings — Fidelity U.S. Bond Index Fund
Data updated: 2026-10-27
FUBFX holds 10,603 securities. The top 10 make up 7.4% of net assets, led by Ust Notes 1.5% 02/15/2030 (0.92%) and Ust Notes 2.75% 08/15/2032 (0.84%). Government Bonds (47.0%) and Corporate Bonds (26.1%) are the largest sectors, and 95.2% of the portfolio is in United States. Debt holdings: 3,259 positions, 72.1% of assets.
Holdings cover 100.69% of net asset value (98.06% of total assets; remainder is cash and receivables). As of August 31, 2026 · N-PORT.
FUBFX Portfolio Holdings
10,603 holdings of Fidelity U.S. Bond Index Fund by percentage of net assets, from the fund's SEC N-PORT filing as of August 31, 2026. The 100 largest are listed below; the interactive table on this page lists all 10,603. The full list of 10,603 holdings can be downloaded as a CSV file from this page.
| Holding | Ticker | Sector | % of net assets | Value (USD) |
|---|---|---|---|---|
| Ust Notes 1.5% 02/15/2030 | — | Government Bonds | 0.92% | $641.76M |
| Ust Notes 2.75% 08/15/2032 | — | Government Bonds | 0.84% | $587.25M |
| Fidelity Cash Central Fund | — | Funds & ETFs | 0.84% | $581.43M |
| Ust Notes 2.625% 07/31/2029 | — | Government Bonds | 0.83% | $573.98M |
| Ust Notes 4.125% 02/15/2036 | — | Government Bonds | 0.75% | $524.59M |
| Ust Notes 3.5% 10/15/2028 | — | Government Bonds | 0.72% | $503.75M |
| Ust Notes 3.5% 01/15/2029 | — | Government Bonds | 0.72% | $498.19M |
| Fhlg 30yr 2% 01/01/2051#sd8121 | — | Mortgage / Securitized | 0.60% | $416.71M |
| Ust Notes 3.875% 07/15/2028 | — | Government Bonds | 0.59% | $407.99M |
| Ust Notes 4.25% 07/31/2028 | — | Government Bonds | 0.58% | $399.90M |
| Ust Notes 4.125% 10/31/2027 | — | Government Bonds | 0.57% | $395.53M |
| Ust Notes 4.5% 11/15/2033 | — | Government Bonds | 0.57% | $392.79M |
| Ust Notes 3.5% 11/30/2030 | — | Government Bonds | 0.56% | $390.09M |
| Ust Notes 3.875% 08/15/2033 | — | Government Bonds | 0.54% | $373.48M |
| Ust Notes 3.875% 05/15/2029 | — | Government Bonds | 0.53% | $370.73M |
| Ust Notes 4.125% 04/30/2033 | — | Government Bonds | 0.53% | $365.79M |
| United States Treasury Bond 4.25% 02/15/2054 | — | Government Bonds | 0.50% | $346.45M |
| Ust Notes 3.625% 08/15/2028 | — | Government Bonds | 0.49% | $339.81M |
| Ust Notes 3.875% 03/15/2028 | — | Government Bonds | 0.48% | $333.31M |
| Ust Notes 3.75% 05/15/2028 | — | Government Bonds | 0.48% | $330.46M |
| Ust Notes 4.125% 07/31/2031 | — | Government Bonds | 0.45% | $314.56M |
| Ust Notes 1.25% 06/30/2028 | — | Government Bonds | 0.45% | $312.21M |
| Ust Notes 3.875% 06/15/2028 | — | Government Bonds | 0.45% | $311.55M |
| Ust Notes 3.5% 09/30/2029 | — | Government Bonds | 0.45% | $309.66M |
| Ust Notes 3.5% 04/30/2028 | — | Government Bonds | 0.44% | $308.66M |
| Ust Notes 4.25% 02/28/2031 | — | Government Bonds | 0.43% | $301.92M |
| Ust Notes 4.25% 11/15/2034 | — | Government Bonds | 0.43% | $299.56M |
| Ust Notes 3.375% 09/15/2028 | — | Government Bonds | 0.43% | $299.05M |
| Ust Notes 4.125% 05/31/2031 | — | Government Bonds | 0.43% | $295.90M |
| Ust Notes 4.375% 07/31/2031 | — | Government Bonds | 0.41% | $286.82M |
| Ust Notes 3.5% 02/15/2029 | — | Government Bonds | 0.41% | $282.15M |
| United States Treasury Bond 4.5% 02/15/2044 | — | Government Bonds | 0.39% | $272.30M |
| Ust Notes 3.375% 09/15/2027 | — | Government Bonds | 0.38% | $266.10M |
| Ust Notes 3.75% 10/31/2032 | — | Government Bonds | 0.38% | $264.38M |
| Ust Notes 4.625% 02/15/2035 | — | Government Bonds | 0.37% | $259.28M |
| Ust Notes 0.625% 05/15/2030 | — | Government Bonds | 0.37% | $255.57M |
| Ust Notes 4.375% 05/15/2036 | — | Government Bonds | 0.37% | $254.23M |
| Fnma 30yr 2% 05/01/2051#ma4325 | — | Mortgage / Securitized | 0.36% | $253.58M |
| United States Treasury Bond 4% 11/15/2052 | — | Government Bonds | 0.36% | $253.46M |
| Ust Notes 0.5% 10/31/2027 | — | Government Bonds | 0.36% | $253.36M |
| Ust Notes 3.875% 04/30/2031 | — | Government Bonds | 0.36% | $250.19M |
| Ust Notes 1.125% 02/29/2028 | — | Government Bonds | 0.36% | $250.02M |
| Ust Notes 4.125% 07/15/2029 | — | Government Bonds | 0.36% | $249.60M |
| Ust Notes 4.375% 11/30/2028 | — | Government Bonds | 0.36% | $247.62M |
| United States Treasury Bond 4.25% 08/15/2054 | — | Government Bonds | 0.36% | $247.11M |
| United States Treasury Bond 4.125% 08/15/2044 | — | Government Bonds | 0.35% | $245.37M |
| Ust Notes 3.875% 06/30/2030 | — | Government Bonds | 0.35% | $244.30M |
| Ust Notes 3.875% 04/30/2030 | — | Government Bonds | 0.35% | $239.83M |
| Ust Notes 4.375% 11/30/2030 | — | Government Bonds | 0.34% | $239.52M |
| United States Treasury Bond 3% 08/15/2052 | — | Government Bonds | 0.34% | $239.24M |
| Ust Notes 4% 05/31/2030 | — | Government Bonds | 0.34% | $235.42M |
| Ust Notes 4% 02/15/2034 | — | Government Bonds | 0.33% | $232.39M |
| United States Treasury Bond 4.625% 11/15/2045 | — | Government Bonds | 0.33% | $230.74M |
| Fnma 30yr 2% 02/01/2051#ma4255 | — | Mortgage / Securitized | 0.33% | $228.85M |
| Ust Notes 4.375% 01/31/2032 | — | Government Bonds | 0.32% | $225.36M |
| Ust Notes 4% 04/30/2032 | — | Government Bonds | 0.32% | $223.60M |
| United States Treasury Bond 5% 05/15/2045 | — | Government Bonds | 0.31% | $217.26M |
| United States Treasury Bond 3.25% 05/15/2042 | — | Government Bonds | 0.31% | $216.31M |
| United States Treasury Bond 4% 11/15/2042 | — | Government Bonds | 0.31% | $214.62M |
| United States Treasury Bond 4.75% 05/15/2055 | — | Government Bonds | 0.30% | $209.70M |
| Ust Notes 4.75% 02/15/2045 | — | Government Bonds | 0.30% | $208.70M |
| Ust Notes 4.25% 02/28/2029 | — | Government Bonds | 0.29% | $203.79M |
| Ust Notes 4% 01/31/2029 | — | Government Bonds | 0.29% | $200.32M |
| Ust Notes 3.625% 05/31/2028 | — | Government Bonds | 0.28% | $197.51M |
| Ust Notes 4.875% 10/31/2028 | — | Government Bonds | 0.28% | $193.94M |
| Ust Notes 3.875% 10/15/2027 | — | Government Bonds | 0.28% | $193.99M |
| Ust Notes 4.125% 06/30/2031 | — | Government Bonds | 0.27% | $187.03M |
| Ust Notes 1.25% 08/15/2031 | — | Government Bonds | 0.26% | $183.89M |
| Ust Notes 3.75% 01/31/2031 | — | Government Bonds | 0.26% | $183.18M |
| Ust Notes 4.625% 09/30/2028 | — | Government Bonds | 0.26% | $182.85M |
| Ust Notes 4.125% 02/29/2032 | — | Government Bonds | 0.26% | $182.83M |
| United States Treasury Bond 5% 05/15/2056 | — | Government Bonds | 0.26% | $180.12M |
| Ust Notes 4% 11/15/2035 | — | Government Bonds | 0.26% | $179.48M |
| Ust Notes 4.125% 10/31/2031 | — | Government Bonds | 0.26% | $177.38M |
| Ust Notes 4.25% 02/15/2028 | — | Government Bonds | 0.25% | $175.99M |
| Umbs 30yr 5.5% 09/01/2056 #tba | — | Mortgage / Securitized | 0.25% | $175.88M |
| Ust Notes 3.75% 05/31/2030 | — | Government Bonds | 0.25% | $171.34M |
| United States Treasury Bond 4.375% 08/15/2043 | — | Government Bonds | 0.24% | $168.85M |
| Ust Notes 3.875% 04/15/2029 | — | Government Bonds | 0.24% | $164.43M |
| United States Treasury Bond 4.625% 11/15/2055 | — | Government Bonds | 0.24% | $164.26M |
| Ust Notes 4% 03/31/2030 | — | Government Bonds | 0.24% | $163.72M |
| Fidelity Securities Lending Cash Central Fund | — | Funds & ETFs | 0.23% | $162.22M |
| Ust Notes 3.5% 09/30/2027 | — | Government Bonds | 0.23% | $161.77M |
| Ust Notes 4.625% 05/31/2031 | — | Government Bonds | 0.23% | $161.03M |
| United States Treasury Bond 4.625% 02/15/2055 | — | Government Bonds | 0.23% | $157.40M |
| Ust Notes 4.125% 09/30/2027 | — | Government Bonds | 0.23% | $157.20M |
| Ust Notes 4.125% 11/15/2027 | — | Government Bonds | 0.22% | $154.11M |
| Ust Notes 4.25% 08/15/2035 | — | Government Bonds | 0.22% | $154.07M |
| Ust Notes 3.625% 03/31/2028 | — | Government Bonds | 0.22% | $151.18M |
| Ust Notes 4.25% 05/15/2035 | — | Government Bonds | 0.22% | $150.94M |
| United States Treasury Bond 5% 05/15/2046 | — | Government Bonds | 0.22% | $150.14M |
| Ust Notes 4% 01/31/2033 | — | Government Bonds | 0.22% | $149.99M |
| Ust Notes 3.375% 05/15/2033 | — | Government Bonds | 0.21% | $149.14M |
| United States Treasury Bond 2% 08/15/2051 | — | Government Bonds | 0.21% | $147.90M |
| Ust Notes 3.625% 09/30/2031 | — | Government Bonds | 0.21% | $147.32M |
| Ust Notes 2.875% 08/15/2028 | — | Government Bonds | 0.21% | $146.51M |
| Ust Notes 3.875% 12/31/2032 | — | Government Bonds | 0.21% | $144.30M |
| Gnii Ii 2% 04/51#ma7311 | — | Mortgage / Securitized | 0.21% | $142.76M |
| Ust Notes 3.625% 10/31/2030 | — | Government Bonds | 0.20% | $142.46M |
| Ust Notes 4.25% 01/31/2030 | — | Government Bonds | 0.20% | $141.02M |
FUBFX Sector Allocation
Fidelity U.S. Bond Index Fund holdings grouped by sector, by share of the portfolio's market value.
| Sector | Weight | Holdings |
|---|---|---|
| Government Bonds | 47.0% | 351 |
| Corporate Bonds | 26.1% | 2862 |
| Mortgage / Securitized | 25.4% | 7342 |
| Funds & ETFs | 1.1% | 2 |
| Municipal Bonds | 0.4% | 41 |
| Industrials | 0.1% | 5 |
FUBFX Country Allocation
Where Fidelity U.S. Bond Index Fund's holdings are domiciled, by percentage of net assets (largest 15).
| Country | % of net assets |
|---|---|
| United States | 95.2% |
| Canada | 1.0% |
| United Kingdom | 0.8% |
| Japan | 0.7% |
| Mexico | 0.3% |
| Philippines | 0.2% |
| Ireland | 0.2% |
| Netherlands | 0.2% |
| Spain | 0.2% |
| Luxembourg | 0.1% |
| Australia | 0.1% |
| Germany | 0.1% |
| Indonesia | 0.1% |
| Israel | 0.1% |
| Cayman Islands | 0.1% |
FUBFX Portfolio Allocation
Asset-class allocation of Fidelity U.S. Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 74.1% |
| Securitized | 25.2% |
| Cash & Equivalents | 1.1% |
FUBFX Debt Constituents
Largest debt holdings of Fidelity U.S. Bond Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Ust Notes | 0.92% |
| Ust Notes | 0.84% |
| Ust Notes | 0.83% |
| Ust Notes | 0.75% |
| Ust Notes | 0.72% |
| Ust Notes | 0.72% |
| Ust Notes | 0.59% |
| Ust Notes | 0.58% |
| Ust Notes | 0.57% |
| Ust Notes | 0.57% |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.