VMBIX Holdings — Vanguard Mortgage-Backed Securities Index Fund
Data updated: 2026-07-29
VMBIX holds 5,123 securities. The top 10 make up 8.0% of net assets, led by Vanguard Market Liquidity Fund (5.08%) and Fncl 2 6/26 (0.52%). Mortgage / Securitized (95.1%) and Funds & ETFs (4.9%) are the largest sectors, and 104.4% of the portfolio is in United States. Debt holdings: 1 position, under 0.1% of assets.
Holdings cover 102.87% of net asset value (98.65% of total assets; remainder is cash and receivables). As of May 31, 2026 · N-PORT.
VMBIX Portfolio Holdings
5,123 holdings of Vanguard Mortgage-Backed Securities Index Fund by percentage of net assets, from the fund's SEC N-PORT filing as of May 31, 2026. The 100 largest are listed below; the interactive table on this page lists all 5,123.
| Holding | Ticker | Sector | % of net assets | Value (USD) |
|---|---|---|---|---|
| Vanguard Market Liquidity Fund | — | Funds & ETFs | 5.08% | $866.41M |
| Fncl 2 6/26 | — | Mortgage / Securitized | 0.52% | $89.14M |
| G2sf 5.5 7/26 | — | Mortgage / Securitized | 0.36% | $61.66M |
| G2 Mb0025 | — | Mortgage / Securitized | 0.32% | $54.53M |
| G2 Mb0871 | — | Mortgage / Securitized | 0.31% | $53.12M |
| Fn Cc2762 | — | Mortgage / Securitized | 0.29% | $50.20M |
| G2 Mb0936 | — | Mortgage / Securitized | 0.29% | $49.19M |
| G2sf 5.5 6/26 | — | Mortgage / Securitized | 0.29% | $49.15M |
| G2 Mb0024 | — | Mortgage / Securitized | 0.28% | $48.13M |
| Fr Sd4155 | — | Mortgage / Securitized | 0.27% | $46.80M |
| Fr Rq0118 | — | Mortgage / Securitized | 0.27% | $45.61M |
| Fr Sd8146 | — | Mortgage / Securitized | 0.26% | $43.70M |
| Fncl 3 6/26 | — | Mortgage / Securitized | 0.25% | $42.93M |
| Fr Rq0094 | — | Mortgage / Securitized | 0.24% | $41.39M |
| Fr Rq0056 | — | Mortgage / Securitized | 0.24% | $40.83M |
| Fr Sd8128 | — | Mortgage / Securitized | 0.23% | $39.52M |
| Fn Ma4325 | — | Mortgage / Securitized | 0.23% | $39.19M |
| G2 Ma8347 | — | Mortgage / Securitized | 0.22% | $37.33M |
| G2 Ma7311 | — | Mortgage / Securitized | 0.21% | $36.33M |
| Fr Sd8106 | — | Mortgage / Securitized | 0.21% | $35.66M |
| G2 Mb0624 | — | Mortgage / Securitized | 0.20% | $34.45M |
| G2 Ma7135 | — | Mortgage / Securitized | 0.20% | $34.43M |
| Fncl 6 6/26 | — | Mortgage / Securitized | 0.20% | $34.40M |
| Fr Sd8134 | — | Mortgage / Securitized | 0.20% | $34.41M |
| G2 Ma7826 | — | Mortgage / Securitized | 0.20% | $33.43M |
| Fn Fs1560 | — | Mortgage / Securitized | 0.20% | $33.41M |
| Fr Sd8121 | — | Mortgage / Securitized | 0.20% | $33.38M |
| G2 Ma6994 | — | Mortgage / Securitized | 0.20% | $33.37M |
| G2 Mb0556 | — | Mortgage / Securitized | 0.19% | $33.00M |
| Fncl 2.5 6/26 | — | Mortgage / Securitized | 0.19% | $32.28M |
| Fn Ma5880 | — | Mortgage / Securitized | 0.19% | $32.15M |
| Fn Ma4378 | — | Mortgage / Securitized | 0.18% | $31.31M |
| Fn Ma4305 | — | Mortgage / Securitized | 0.18% | $31.09M |
| G2 Ma8267 | — | Mortgage / Securitized | 0.18% | $30.68M |
| G2 Ma8428 | — | Mortgage / Securitized | 0.18% | $30.21M |
| Fr Sd8177 | — | Mortgage / Securitized | 0.18% | $30.21M |
| Fr Sd8506 | — | Mortgage / Securitized | 0.18% | $29.96M |
| Fr Sd1507 | — | Mortgage / Securitized | 0.18% | $29.92M |
| G2 Mb0687 | — | Mortgage / Securitized | 0.18% | $29.93M |
| Fn Ma4119 | — | Mortgage / Securitized | 0.17% | $29.83M |
| Fn Ma4255 | — | Mortgage / Securitized | 0.17% | $29.06M |
| Fr Rq0028 | — | Mortgage / Securitized | 0.17% | $29.06M |
| G2 Ma7471 | — | Mortgage / Securitized | 0.17% | $28.62M |
| Fr Sd8493 | — | Mortgage / Securitized | 0.17% | $28.34M |
| G2 Mb1070 | — | Mortgage / Securitized | 0.17% | $28.15M |
| Fr Sd8182 | — | Mortgage / Securitized | 0.16% | $27.82M |
| G2 Mb0091 | — | Mortgage / Securitized | 0.16% | $27.67M |
| G2 Mb1142 | — | Mortgage / Securitized | 0.16% | $27.61M |
| G2 Mb0146 | — | Mortgage / Securitized | 0.16% | $27.28M |
| G2 Mb0485 | — | Mortgage / Securitized | 0.16% | $27.12M |
| Fn Ma4600 | — | Mortgage / Securitized | 0.16% | $27.08M |
| Fr Sd8474 | — | Mortgage / Securitized | 0.15% | $26.42M |
| G2sf 5 6/26 | — | Mortgage / Securitized | 0.15% | $26.11M |
| Fncl 5.5 6/26 | — | Mortgage / Securitized | 0.15% | $26.06M |
| Fn Fs5129 | — | Mortgage / Securitized | 0.15% | $25.96M |
| G2 Mb0365 | — | Mortgage / Securitized | 0.15% | $25.83M |
| G2 Mb0745 | — | Mortgage / Securitized | 0.15% | $25.76M |
| Fr Sd8155 | — | Mortgage / Securitized | 0.15% | $25.73M |
| G2 Ma9605 | — | Mortgage / Securitized | 0.15% | $25.68M |
| Fn Ma4437 | — | Mortgage / Securitized | 0.15% | $25.61M |
| Fr Sd8489 | — | Mortgage / Securitized | 0.15% | $25.35M |
| Fr Sd8150 | — | Mortgage / Securitized | 0.15% | $25.34M |
| Fr Sd4977 | — | Mortgage / Securitized | 0.15% | $25.14M |
| G2 Mb0092 | — | Mortgage / Securitized | 0.15% | $24.83M |
| G2 Ma7767 | — | Mortgage / Securitized | 0.14% | $24.69M |
| G2 Mb0813 | — | Mortgage / Securitized | 0.14% | $24.66M |
| G2 Ma7418 | — | Mortgage / Securitized | 0.14% | $24.66M |
| Fncl 5 6/26 | — | Mortgage / Securitized | 0.14% | $24.63M |
| G2 Ma7589 | — | Mortgage / Securitized | 0.14% | $24.63M |
| G2 Ma9851 | — | Mortgage / Securitized | 0.14% | $24.56M |
| Fr Sd8220 | — | Mortgage / Securitized | 0.14% | $24.56M |
| G2 Ma8346 | — | Mortgage / Securitized | 0.14% | $24.55M |
| Fr Sd8463 | — | Mortgage / Securitized | 0.14% | $24.37M |
| Fnci 2 7/26 | — | Mortgage / Securitized | 0.14% | $24.17M |
| Fr Sd8113 | — | Mortgage / Securitized | 0.14% | $24.02M |
| G2 Ma8201 | — | Mortgage / Securitized | 0.14% | $23.96M |
| G2 Mb0872 | — | Mortgage / Securitized | 0.14% | $23.77M |
| Fr Sd8276 | — | Mortgage / Securitized | 0.14% | $23.75M |
| G2 Ma7254 | — | Mortgage / Securitized | 0.14% | $23.72M |
| G2 Mb0686 | — | Mortgage / Securitized | 0.14% | $23.66M |
| G2 Mb0204 | — | Mortgage / Securitized | 0.14% | $23.43M |
| Fn Ma4511 | — | Mortgage / Securitized | 0.14% | $23.38M |
| Fr Sl2483 | — | Mortgage / Securitized | 0.14% | $23.34M |
| Fn Ma4398 | — | Mortgage / Securitized | 0.14% | $23.33M |
| Fn Ma4077 | — | Mortgage / Securitized | 0.14% | $23.27M |
| Fr Sd8505 | — | Mortgage / Securitized | 0.14% | $23.24M |
| G2 Ma7649 | — | Mortgage / Securitized | 0.14% | $23.23M |
| Fn Ma5445 | — | Mortgage / Securitized | 0.14% | $23.15M |
| Fn Fa2374 | — | Mortgage / Securitized | 0.14% | $23.14M |
| Fr Sd8188 | — | Mortgage / Securitized | 0.14% | $23.10M |
| Fr Sd8206 | — | Mortgage / Securitized | 0.13% | $22.89M |
| Fr Rj1877 | — | Mortgage / Securitized | 0.13% | $22.89M |
| Fr Rq0110 | — | Mortgage / Securitized | 0.13% | $22.83M |
| G2 Ma7051 | — | Mortgage / Securitized | 0.13% | $22.64M |
| Fr Sd8214 | — | Mortgage / Securitized | 0.13% | $22.53M |
| G2 Mb0147 | — | Mortgage / Securitized | 0.13% | $22.52M |
| Fr Sd8475 | — | Mortgage / Securitized | 0.13% | $22.47M |
| G2 Ma9780 | — | Mortgage / Securitized | 0.13% | $22.34M |
| Fn Fs3179 | — | Mortgage / Securitized | 0.13% | $22.10M |
| Fr Sd8340 | — | Mortgage / Securitized | 0.13% | $21.87M |
VMBIX Sector Allocation
Vanguard Mortgage-Backed Securities Index Fund holdings grouped by sector, by share of the portfolio's market value.
| Sector | Weight | Holdings |
|---|---|---|
| Mortgage / Securitized | 95.1% | 5122 |
| Funds & ETFs | 4.9% | 1 |
VMBIX Country Allocation
Where Vanguard Mortgage-Backed Securities Index Fund's holdings are domiciled, by percentage of net assets (largest 1).
| Country | % of net assets |
|---|---|
| United States | 104.4% |
VMBIX Portfolio Allocation
Asset-class allocation of Vanguard Mortgage-Backed Securities Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 99.3% |
| Cash & Equivalents | 5.1% |
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.