ETF comparison
FBND vs VMBS
Both US Aggregate Bond.
Fidelity Total Bond ETF · Vanguard Mortgage-Backed Securities Index Fund ETF Shares
Holdings overlap
216 positions appear in both funds. Buying equal dollars of FBND and VMBS would leave roughly 5.7% 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
216 shared in total| # | Holding | In FBND | In VMBS | Overlap |
|---|---|---|---|---|
| 1 | FNMA/FHLG TBA ISSUER | 1.99% | 0.33% | 0.33% |
| 2 | GNMA II GTD PASS THRU CTF MULTIPLE ISSUER | 1.28% | 0.28% | 0.28% |
| 3 | FNMA/FHLG TBA ISSUER | 0.31% | 0.26% | 0.26% |
| 4 | FNMA/FHLG TBA ISSUER | 0.30% | 0.25% | 0.25% |
| 5 | FNMA/FHLG TBA ISSUER | 0.25% | 0.30% | 0.25% |
| 6 | GNMA II GTD PASS THRU CTF MULTIPLE ISSUER | 0.20% | 0.18% | 0.18% |
| 7 | FNMA/FHLG TBA ISSUER | 0.57% | 0.17% | 0.17% |
| 8 | GNMA GUARANTEED PASS THRU CERT | 0.16% | 0.18% | 0.16% |
| 9 | FNMA/FHLG TBA ISSUER | 0.16% | 0.21% | 0.16% |
| 10 | GNMA II GTD PASS THRU CTF MULTIPLE ISSUER | 0.16% | 0.18% | 0.16% |
| 11 | GNMA GUARANTEED PASS THRU CERT | 0.29% | 0.16% | 0.16% |
| 12 | FED HOME LOAN MTG CORP - GOLD | 0.19% | 0.13% | 0.13% |
Only in FBND
4,414 total- Fidelity Revere Street Trust 3.16%
- UST NOTES 2.73%
- UST NOTES 2.04%
- UST NOTES 1.97%
- UNITED STATES TREASURY BOND 1.37%
- UNITED STATES TREASURY BOND 1.36%
- UST NOTES 1.36%
- UNITED STATES TREASURY BOND 1.12%
- UST NOTES 1.09%
- UST NOTES 1.07%
Only in VMBS
4,646 total- Ginnie Mae II Pool 0.30%
- Ginnie Mae II Pool 0.29%
- Ginnie Mae II Pool 0.27%
- Ginnie Mae II Pool 0.27%
- Fannie Mae Pool 0.27%
- Ginnie Mae II Pool 0.26%
- Freddie Mac Pool 0.26%
- Ginnie Mae II Pool 0.24%
- Freddie Mac Pool 0.23%
- Freddie Mac Pool 0.22%
Related comparisons
More comparisons with FBND
- FBND vs MBB · iShares MBS ETF 5.2%
- FBND vs AGGY · WisdomTree Yield Enhanced U.S. Aggregate Bond Fund 4.1%
- FBND vs BINC · iShares Flexible Income Active ETF 3.5%
- FBND vs NEAR · iShares Short Duration Bond Active ETF 3.2%
- FBND vs BOND · PIMCO Active Bond Exchange-Traded Fund 2.6%
- FBND vs PYLD · PIMCO ETF Trust - PIMCO Multisector Bond Active Exchange-Traded Fund 2.5%
More comparisons with VMBS
- VMBS vs IUSB · iShares Core Universal USD Bond ETF 4.7%
- VMBS vs VCRB · Vanguard Core Bond ETF 4.3%
- VMBS vs AGGY · WisdomTree Yield Enhanced U.S. Aggregate Bond Fund 2.1%
- VMBS vs CGCP · Capital Group Core Plus Income ETF 1.6%
- VMBS vs JCPB · JPMorgan Core Plus Bond ETF 1.2%
- VMBS vs BOND · PIMCO Active Bond Exchange-Traded Fund 0.8%
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.