Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
MBB vs VT: how they differ
MBB and VT hold 0% of their weight in the same names, and VT returned more over the year.
iShares MBS ETF and Vanguard Total World Stock Index Fund.
What they hold in common
By the books each fund has filed, MBB and VT hold 0% of their money in the same securities at the same weight.
| Only in MBB | Only in VT |
|---|---|
| Freddie Mac 1.07% | NVIDIA Corp 4.22% |
| Government National Mortgage Association 0.97% | Apple Inc 3.53% |
| UMBS, TBA 0.85% | Microsoft Corp 2.73% |
| Government National Mortgage Association 0.69% | Amazon.com Inc 2.29% |
| UMBS, TBA 0.66% | Alphabet Inc 2.04% |
| Government National Mortgage Association 0.56% | Broadcom Inc 1.74% |
| Government National Mortgage Association 0.55% | Alphabet Inc 1.61% |
| Government National Mortgage Association 0.54% | Taiwan Semiconductor Manufacturing Co Lt 1.52% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Apr 30, 2026 and May 31, 2026.
| MBB iShares MBS ETF | VT Vanguard Total World Stock Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Mbs | Total World Stock |
| Total return, 1 year | −0.1% | +18.9% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −17.6 pts | +1.4 pts |
| Expense ratio | 0.04% | 0.06% |
| Holdings | 11144 | 10042 |
MBB in plain words
MBB is a bond fund tracking the Mbs. Over the year to Sep 11, 2026 it returned −0.1% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.04% a year. It sat 3.3% below its high of Feb 27, 2026 on Sep 11, 2026.
VT in plain words
VT is an index equity fund tracking the Total World Stock. Over the year to Sep 11, 2026 it returned +18.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.06% a year. By its holdings filed for Apr 30, 2026, 55% of the fund by weight is stocks the S&P 500 also holds, across 10042 positions, with the top ten at 21.9%.
Questions people ask
- Which returned more over the last year, MBB or VT?
- In the year to Sep 12, 2026, with distributions reinvested, MBB returned −0.1% and VT returned +18.9%, so VT returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, MBB or VT?
- MBB charges 0.04% a year and VT charges 0.06%, so MBB is cheaper. Fees come from each fund's prospectus.
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Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, MBB against VT, data as of Sep 12, 2026. https://etfiq.com/compare/any/MBB-VT Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources