ETF comparison
FBND vs VMBS
Both US Aggregate Bond.
Fidelity Total Bond ETF · Vanguard Mortgage-Backed Securities Index Fund ETF Shares
Holdings overlap
200 positions appear in both funds. Buying equal dollars of FBND and VMBS would leave roughly 4.5% of each dollar exposed to the same underlying securities.
Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
VMBS is 33 bps cheaper than FBND. On a $100,000 position that's about $330/yr more in fees for FBND.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with FBND vs VMBS.
Top shared holdings
200 shared in total| # | Holding | In FBND | In VMBS | Overlap |
|---|---|---|---|---|
| 1 | FNMA/FHLG TBA ISSUER | 1.19% | 0.52% | 0.52% |
| 2 | GNMA II GTD PASS THRU CTF MULTIPLE ISSUER | 0.76% | 0.36% | 0.36% |
| 3 | GNMA II GTD PASS THRU CTF MULTIPLE ISSUER | 1.14% | 0.29% | 0.29% |
| 4 | FNMA/FHLG TBA ISSUER | 0.39% | 0.25% | 0.25% |
| 5 | FNMA/FHLG TBA ISSUER | 0.44% | 0.20% | 0.20% |
| 6 | GNMA II GTD PASS THRU CTF MULTIPLE ISSUER | 0.89% | 0.15% | 0.15% |
| 7 | FNMA/FHLG TBA ISSUER | 0.26% | 0.15% | 0.15% |
| 8 | FNMA/FHLG TBA ISSUER | 0.73% | 0.14% | 0.14% |
| 9 | FNMA/FHLG TBA ISSUER | 0.13% | 0.19% | 0.13% |
| 10 | GNMA II GTD PASS THRU CTF MULTIPLE ISSUER | 0.23% | 0.12% | 0.12% |
| 11 | FNMA GTD MTG PASS THRU CTF | 0.10% | 0.18% | 0.10% |
| 12 | FED HOME LOAN MTG CORP - GOLD | 0.11% | 0.10% | 0.10% |
Only in FBND
4,269 total- Fidelity Revere Street Trust 4.62%
- UST NOTES 2.34%
- UST NOTES 2.21%
- UST NOTES 2.17%
- UST NOTES 1.81%
- UNITED STATES TREASURY BOND 1.53%
- UST NOTES 1.49%
- UNITED STATES TREASURY BOND 1.26%
- UST NOTES 1.20%
- UST NOTES 1.18%
Only in VMBS
4,912 total- Ginnie Mae II Pool 0.32%
- Ginnie Mae II Pool 0.31%
- Fannie Mae Pool 0.29%
- Ginnie Mae II Pool 0.29%
- Ginnie Mae II Pool 0.28%
- Freddie Mac Pool 0.27%
- Freddie Mac Pool 0.24%
- Freddie Mac Pool 0.24%
- Fannie Mae Pool 0.23%
- Ginnie Mae II Pool 0.22%
Related comparisons
More comparisons with FBND
- FBND vs AGGY · WisdomTree Yield Enhanced U.S. Aggregate Bond Fund 4.4%
- FBND vs NEAR · iShares Short Duration Bond Active ETF 3.0%
- FBND vs BINC · iShares Flexible Income Active ETF 2.9%
- FBND vs PYLD · PIMCO ETF Trust - PIMCO Multisector Bond Active Exchange-Traded Fund 2.7%
- FBND vs BSV · Vanguard Short-Term Bond Index Fund ETF Shares 2.7%
- FBND vs SPMB · State Street SPDR Portfolio Mortgage Backed Bond ETF 2.6%
More comparisons with VMBS
- VMBS vs CGCP · Capital Group Core Plus Income ETF 1.8%
- VMBS vs AGGY · WisdomTree Yield Enhanced U.S. Aggregate Bond Fund 1.8%
- VMBS vs JCPB · JPMorgan Core Plus Bond ETF 1.1%
- VMBS vs BOND · PIMCO Active Bond Exchange-Traded Fund 0.8%
- VMBS vs PYLD · PIMCO ETF Trust - PIMCO Multisector Bond Active Exchange-Traded Fund 0.2%
- VMBS vs NEAR · iShares Short Duration Bond Active ETF 0.0%
Percentages are holdings overlap with the named fund.
Open FBND or VMBS at a brokerage
Both funds trade commission-free at major US brokerages.
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.
Holdings overlap is the sum of min(weight_a, weight_b) over positions
matched on ISIN (CUSIP fallback). Methodology: see
/methodology/.
Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.